CN218237936U - Gas-liquid separator, compressor assembly and air conditioner with compressor assembly - Google Patents

Abstract

The application provides a gas-liquid separator, a compressor assembly and an air conditioner with the compressor assembly, which comprise a shell, an air outlet channel and a communicating pipe, wherein the air outlet channel can be communicated with an air suction port of a compressor; the communicating pipe can guide the gas in the shell to flow out through the gas outlet channel; the communicating pipe comprises a first pipe and a second pipe; the resonance frequency of the first pipe is the same as the running frequency of the compressor; the second pipe has a different operating frequency from the compressor; and the air outlet channel can be switched between being communicated with the first pipe or the second pipe. According to the gas-liquid separator, the compressor can ensure good refrigerating and heating capacities at the same time.

Description

Gas-liquid separator, compressor assembly and air conditioner with compressor assembly

Technical Field

The application belongs to the technical field of air conditioners, and particularly relates to a gas-liquid separator, a compressor assembly and an air conditioner with the same.

Background

At present, a compressor assembly used in an air conditioning system is provided with a gas-liquid separator unit. The gas-liquid separator part for compressor is composed of filter screen, support, partition, straight pipe, communicating pipe, bent pipe and cylinder, and has three functions of filtering, storing liquid and stabilizing pressure.

For an air conditioning system with both refrigeration and heating functions, generally, a gas-liquid separator part is designed to be mainly optimized for refrigeration application, but during heating application, because the suction pressure is reduced and the pressure ratio is increased, the working condition is greatly different from the refrigeration application, the suction capacity of the gas-liquid separator is weakened at the moment, the heating capacity of a compressor is reduced, the heating capacity of the compressor is always ensured to meet the use requirement of the system, the compressor with the refrigeration capacity larger than the requirement is used, capacity surplus is caused, and the control volume, the optimization pipeline and the like of the air conditioning system are influenced. This phenomenon is more pronounced when a compressor with enthalpy-increasing capability is matched with an air conditioning system, making the compressor less than optimal for use.

Therefore, how to provide a gas-liquid separator, a compressor assembly and an air conditioner having the same, which can enable a compressor to simultaneously ensure good cooling and heating capabilities, is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide a gas-liquid separator, a compressor assembly and an air conditioner having the same, which can ensure good cooling and heating capabilities of a compressor at the same time.

In order to solve the above problems, the present application provides a gas-liquid separator including:

a housing;

the air outlet channel can be communicated with an air suction port of the compressor;

the communicating pipe can guide the gas in the shell to flow out through the gas outlet channel; the communicating pipe comprises a first pipe and a second pipe; the resonance frequency of the first pipe is the same as the running frequency of the compressor; the second tube has a different operating frequency than the compressor; and the air outlet channel can be switched between being communicated with the first pipe or the second pipe.

Further, the pipe diameter of the first pipe is D21; the pipe diameter of the second pipe is D22; wherein, D21< D22;

and/or the length of the first tube is L21, and the length of the second tube is L22; wherein L22< L21.

Further, D22 is more than or equal to 1.2 and less than or equal to D21 and less than or equal to 1.4 and less than or equal to D21; and/or, L22 is not less than 0.65 × l21 and not more than 0.85 × l21.

Furthermore, the gas-liquid separator also comprises a switching mechanism, the switching mechanism is provided with a switching cavity, and the switching cavity is communicated with the gas outlet channel; the switching chamber is capable of switching between communicating with the first tube or the second tube.

Further, the switching mechanism also comprises a movable structure; the switching cavity is provided with a first communication port and a second communication port, the first pipe is communicated with the first communication port, and the second pipe is communicated with the second communication port; the movable structure can be in switching intracavity activity to the first intercommunication mouth of shutoff or second intercommunication mouth, and then make and switch the chamber and switch between first pipe or second pipe intercommunication.

Furthermore, the movable structure is provided with a through hole, and when the movable structure blocks the first communication port, the through hole is communicated with the second communication port and the air outlet channel; when the movable structure blocks the second communication port, the through hole is communicated with the first communication port and the air outlet channel.

Further, the through hole comprises a first section and a second section which are communicated in sequence in the axial direction; the aperture of the first section is smaller than that of the second section; the first section can communicate first intercommunication mouth or second intercommunication mouth, second section intercommunication air outlet channel.

Further, the switching cavity is also provided with a vent; the gas introduced into the vent can push the movable structure to move in the switching cavity.

Further, the vent comprises a first vent and a second vent, wherein first gas can be introduced into the first vent, second gas can be introduced into the second vent, and the gas pressure of the first gas is different from that of the second gas so as to push the movable structure to move in the switching cavity.

The gas-liquid separator further comprises an air supply pipeline, the air supply pipeline comprises a main pipe, a first branch pipe, a second branch pipe and an air pressure adjusting device, the first end of the main pipe is communicated with the air supply device, the second end of the main pipe is communicated with the first branch pipe and the second branch pipe, the first branch pipe is communicated with the first air vent, and the second branch pipe is communicated with the second air vent; the gas in the first branch pipe forms a first gas, the gas in the second branch pipe forms a second gas, and the gas pressure regulating device can regulate the gas pressure in the first branch pipe and/or the second branch pipe so that the gas pressure of the first gas is different from the gas pressure of the second gas.

Further, the gas-liquid separator also comprises an outlet pipe, and the outlet pipe forms an outlet channel; the outlet pipe comprises an inner section and an outer section, the inner section is positioned in the shell, and the outer section extends out of the shell; the inner diameter of the cross section of the shell is phi D10z; the diameter of the first section is phi D42u; the diameter of the second section is phi D42D; the inner diameter of the outlet pipe is phi D3; the distance between the central axis of the second pipe and the central axis of the shell is S22; the distance between the central axis of the first pipe and the central axis of the shell is S21; in the moving direction of the moving structure, the distance between the central axis of the first section and the position on the moving structure close to the first vent is L42a, and the distance between the central axis of the first section and the position on the moving structure close to the second vent is L42b;

wherein L42a + D42D/2 is greater than or equal to D10z/2+ D3/2;

and/or L42b + D42D/2 is more than or equal to D10z/2+ D3/2;

and/or L42a + D42u/2 is greater than or equal to D22/2+ S22+ D10z/2;

and/or L42b + D42u/2 is greater than or equal to D21/2+ S21+ D10z/2;

and/or L42a + L42b is greater than or equal to D10z/2+ S21+ D21/2;

and/or L42a + L42b is greater than or equal to D10z/2+ S22+ D22/2;

and/or L42a + D42D/2 is less than or equal to D10z/2+ S21-D21/2;

and/or L42b + D42D/2 is less than or equal to D10z/2+ S22-D22/2;

and/or D22/2+ D21/2 is less than or equal to S22+ S21;

and/or D42u ≧ D22> D21.

Furthermore, the gas-liquid separator also comprises an oil leakage hole, and lubricating oil in the shell can enter the air outlet channel through the oil leakage hole.

Further, when the gas-liquid separator further comprises a switching mechanism and the gas-liquid separator further comprises an outlet pipe, the switching mechanism is arranged in the middle of the shell in the axial direction, and the oil leakage hole is formed in the outlet pipe;

or when the gas-liquid separator further comprises a switching mechanism, the switching mechanism is arranged at the bottom of the shell, and the oil leakage hole is formed in the communicating pipe.

According to still another aspect of the present application, there is provided a compressor assembly including a gas-liquid separator and a compressor body, the gas-liquid separator being the above-mentioned gas-liquid separator; the air outlet channel of the gas-liquid separator is communicated with the air suction port of the compressor body.

According to still another aspect of the present application, there is provided an air conditioner including a compressor assembly as described above.

Further, when the air conditioner is in a heating state, the air outlet channel is switched to be communicated with the first pipe; and/or when the air conditioner is in a refrigerating state, the air outlet channel is switched to be communicated with the second pipe.

Further, the air conditioner also comprises a four-way valve, a first heat exchanger, a throttling component, a second heat exchanger and an enthalpy increasing component which are connected in sequence; when the gas-liquid separator further comprises a switching mechanism, the switching mechanism comprises a movable structure, the switching mechanism is provided with a switching cavity, the switching cavity is also provided with a vent, and when the vent comprises a first vent and a second vent, an exhaust port of the enthalpy increasing component is communicated with the first vent; the second vent can be switched between being communicated with the first heat exchanger or the second heat exchanger so as to adjust the pressure difference between the first gas in the first vent and the second gas in the second vent, and further push the movable structure to move in the switching cavity, so that the gas outlet channel is communicated with the first pipe or the second pipe.

According to the gas-liquid separator, the compressor assembly and the air conditioner with the compressor assembly, the air outlet channel of the gas-liquid separator can be switched between the communication with the first pipe or the second pipe, when the compressor operates, the conventional refrigeration operation working condition is switched to the second pipe to be communicated with the air suction port of the compressor, so that the sufficient air suction quantity is met, the refrigeration capacity is ensured, and the influence of resonance of the gas-liquid separator on vibration and noise of the compressor is avoided; when need heating to low temperature operation operating mode, switch over to first pipe intercommunication compressor induction port, because communicating pipe can produce resonance with breathing in this moment, arouse more obvious pulsation of breathing in, can improve the air suction volume by a wide margin, improved the heating ability under the low temperature condition, this application vapour and liquid separator, compressor unit spare and have its air conditioner can make the compressor guarantee fine refrigeration and heating ability simultaneously.

Drawings

FIG. 1 is a schematic diagram of a gas-liquid separator according to the present application;

fig. 2 is a schematic structural diagram of a switching mechanism in the present application;

FIG. 3 is a schematic diagram of a switching mechanism according to the present application;

FIG. 4 is a four view of the mobile structure of the present application;

FIG. 5 is a schematic diagram of the structure of the active structure of the present application;

FIG. 6 is a schematic structural diagram of an air conditioner in a cooling state according to the present application;

fig. 7 is a schematic structural view of an air conditioner in the present application in a heating state;

FIG. 8 is a schematic view showing the structure of a gas-liquid separator in the related art;

fig. 9 is a schematic view of a structure of a compressor assembly in the related art;

FIG. 10 is a comparison of various operating conditions and operating ranges of the present application and a related art compressor;

fig. 11 is a graph comparing the cooling capacity and the heating capacity of the gas-liquid separator according to the present application and the related art.

The reference numerals are represented as:

1. a housing; 2. a communicating pipe; 21. a first tube; 22. a second tube; 3. discharging a pipe; 4. a switching mechanism; 41. a switching chamber; 411. a first communication port; 412. a second communication port; 413. a vent; 4131. a first vent; 4132. a second vent; 42. a movable structure; 421. a through hole; 4211. a first stage; 4212. a second stage; 51. a compressor; 511. an exhaust pipe; 52. a four-way valve; 53. a first heat exchanger; 54. a throttling member; 55. an enthalpy increasing component; 56. a flash evaporator; 57. a control valve; 58. a second heat exchanger; 6. filtering with a screen; 7. a support; 8. feeding a pipe; 9. a separator.

Detailed Description

Referring to fig. 1 to 10 in combination, a gas-liquid separator includes a housing 1, an outlet passage and a communicating pipe 2, the outlet passage being capable of communicating with an air suction port of a compressor 51; the communicating pipe 2 can guide the gas in the shell 1 to flow out through the gas outlet channel; communication pipe 2 includes first pipe 21 and second pipe 22; the resonance frequency of the first pipe 21 is the same as the operating frequency of the compressor 51; the second pipe 22 has a different operating frequency from the compressor 51; and the outlet passage can be switched between communication with the first pipe 21 or the second pipe 22.

Referring to fig. 8-9 in combination, there is only one communicating pipe 2 in the gas-liquid separator, which is a gas-liquid separator of the prior art and a compressor 51. Compared with the prior art, the air outlet channel of the gas-liquid separator can be switched between the communication with the first pipe 21 or the second pipe 22, when the compressor 51 operates, the conventional refrigeration operation working condition is switched to the second pipe 22 to be communicated with the air suction port of the compressor 51, so that the sufficient air suction quantity is met, the refrigeration capacity is ensured, and the influence of the resonance of the gas-liquid separator on the vibration and the noise of the compressor 51 is avoided; when the low-temperature operation working condition needs heating, the first pipe 21 is switched to be communicated with the air suction port of the compressor 51, and at the moment, the communicating pipe 2 can resonate with the air suction to cause obvious air suction pulsation, so that the air suction quantity can be greatly improved, and the heating capacity under the low-temperature condition is improved. The gas-liquid separator can be optimized respectively during refrigeration and heating application, improves the heating capacity of the compressor 51, can reduce the requirement of the air conditioning system on the discharge capacity of the compressor 51, and is favorable for optimizing the air conditioning system in space, cost and energy consumption. The present application solves the problem of insufficient heating capacity when the gas-liquid separator is designed for optimal refrigeration capacity of the compressor 51.

Referring to fig. 1 in combination, the present application also discloses some embodiments, the first pipe 21 has a pipe diameter D21; the pipe diameter of the second pipe 22 is D22; wherein D21< D22.

The present application also discloses embodiments where the length of the first tube 21 is L21 and the length of the second tube 22 is L22; wherein L22< L21. As can be known from a great deal of research and creative experiments, the resonant frequency of the gas-liquid separator is related to the operation condition of the compressor 51, the inner diameter of the communication pipe 2, the length of the communication pipe 2, and the like, so that the resonant frequency is limited by limiting the pipe diameters and the lengths of the first pipe 21 and the second pipe 22. Wherein the operating condition determines the operating frequency of the compressor 51, and falls within the operating range of the compressor 51 when the resonant frequency is close to the operating frequency of the compressor 51, and falls outside the operating range otherwise. And the resonance influence is that the resonance frequency and the operating frequency of the compressor 51 are in a 1-fold frequency relationship when the resonance influence is the largest, and 2-fold and high-frequency are less, so that the resonance frequency of the first pipe 21 and the operating frequency of the compressor 51 can be set to be in a 1-fold frequency relationship in the present application.

The application also discloses some embodiments, 1.2D 21 ≦ D22 ≦ 1.4D 21; and/or, L22 is not less than 0.65 × l21 and not more than 0.85 × l21.

Experiments verify that the inner diameter and the length of a communicating pipe 2 of the gas-liquid separator can influence the resonance frequency of the gas-liquid separator, wherein the first pipe 21 needs to enable the resonance frequency of the gas-liquid separator in the working state to be equivalent to the operation frequency of the compressor 51 under the low-temperature heating working condition, so that the suction pulsation is generated to improve the heating capacity, the system can rapidly convey heat, the operation frequency of the low-temperature heating is closer to the maximum refrigeration operation frequency, the resonance frequency designed by the short and rough communicating pipe 2 needs to be obviously improved for avoiding the resonance problem in the refrigeration, but the reduction of the communicating pipe 2 can cause the reduction of the effective volume of the gas-liquid separator in the working state. Therefore, the inventor is verified through a great deal of creative research and experiments, and combines the cooling and heating conditions commonly used by the air conditioner, and optimally, the inner diameter Φ D22 of the second pipe 22 and the inner diameter Φ D21 of the first pipe 21 satisfy the following relation: 1.2 × D21< = D22< =1.4 × D21,0.65 × L21< = L22< =0.85 × L21. The communication pipe 2 may be a steel pipe.

The application also discloses some embodiments, the gas-liquid separator further comprises a switching mechanism 4, the switching mechanism 4 is provided with a switching cavity 41, and the switching cavity 41 is communicated with the gas outlet channel; the switching chamber 41 can be switched between communication with the first tube 21 or the second tube 22. Namely, in the case of heating: when the switching cavity 41 is communicated with the first pipe 21, the first pipe 21 is communicated with the air outlet channel, namely the first pipe 21 is communicated with the air suction port of the compressor 51, at the moment, the communicating pipe 2 can resonate with the air suction to cause obvious air suction pulsation, so that the air suction quantity can be greatly improved, and the heating capacity under the low-temperature condition is improved. In the case of refrigeration: when the switching cavity 41 is communicated with the second pipe 22, the second pipe 22 is communicated with the air outlet channel, namely the second pipe 22 is communicated with the air suction port of the compressor 51, so that the sufficient air suction amount is met, the refrigerating capacity is ensured, and the influence of the resonance of the gas-liquid separator on the vibration of the compressor 51 and the noise is avoided.

The present application also discloses embodiments wherein the switching mechanism 4 further comprises a movable structure 42; the switching chamber 41 has a first communication port 411 and a second communication port 412, the first tube 21 communicates with the first communication port 411, and the second tube 22 communicates with the second communication port 412; the movable structure 42 is movable within the switching chamber 41 to close the first communication port 411 or the second communication port 412, thereby switching the switching chamber 41 between communication with the first tube 21 or the second tube 22. According to the application, the movable structure 42 moves in the movable cavity, so that the switching cavity 41 is switched between the communication with the first pipe 21 or the second pipe 22, and the air outlet channel is switched between the communication with the first pipe 21 or the second pipe 22; therefore, the conventional refrigeration operation working condition is switched to the second pipe 22 to be communicated with the air suction port of the compressor 51, so that the sufficient air suction amount is met, the refrigeration capacity is ensured, and the influence of the resonance of the gas-liquid separator on the vibration and the noise of the compressor 51 is avoided; when the low-temperature operation working condition needs heating, the first pipe 21 is switched to be communicated with the air suction port of the compressor 51, and at the moment, the communicating pipe 2 can resonate with the air suction to cause obvious air suction pulsation, so that the air suction quantity can be greatly improved, and the heating capacity under the low-temperature condition is improved. The movable structure 42 is adopted to move in the movable cavity to seal the first communicating port 411 or the second communicating port 412, when the first communicating port 411 is sealed, the second communicating port 412 is opened, and at the moment, the second pipe 22 is communicated with the switching cavity 41 and the air outlet channel through the communicating ports; when the second communication port 412 is closed, the first communication port 411 is opened, and at this time, the first tube 21 communicates the switching chamber 41 and the air outlet passage through the communication port. The structure of this application switching mechanism 4 is simple, and the switching mode is nimble, can also pass through external force such as the activity that motor or user promoted activity structure 42.

The application also discloses some embodiments, the movable structure 42 has a through hole 421, when the movable structure 42 blocks the first communicating hole 411, the through hole 421 communicates the second communicating hole 412 with the air outlet channel; when the movable structure 42 blocks the second communication port 412, the through hole 421 communicates the first communication port 411 with the air outlet channel. Referring to fig. 3, when the movable structure 42 is moved to the first position, one end of the through hole 421 at least partially faces the first communication port 411, and the other end at least partially faces the air outlet channel, so that the through hole 421 communicates the first communication port 411 with the air outlet channel; referring to fig. 2 in combination, when the movable structure 42 is moved to the second position, one end of the through hole 421 at least partially faces the second communication port 412, and another end of the through hole 421 at least partially faces the air outlet channel, so that the through hole 421 communicates the second communication port 412 with the air outlet channel.

Communication pipe 2 may have other cross-sectional shapes than the circular pipe structure shown in the drawings, and the cross-sectional shapes of the communication port of the switching mechanism and the through hole 421 of the movable structure 42 may have other shapes. But the dimensional and positional relationships between the different shaped sections are still required to satisfy the relationships between the embodiments of the present application.

The application also discloses embodiments that the through hole 421 comprises a first section 4211 and a second section 4212 which are communicated in sequence in the axial direction; the first stage 4211 has a smaller pore size than the second stage 4212; the first stage 4211 can communicate with the first communication port 411 or the second communication port 412, and the second stage 4212 communicates with the air outlet passage. Referring collectively to fig. 2-5, this enables the second stage 4212 to communicate with the outlet air passage regardless of the position to which the mobile structure 42 is moved; that is, no matter the movable structure 42 is moved to the first position or the second position, one end of the through hole 421 faces the first communication port 411 or the second communication port 412, and the other end can partially face the air outlet channel, so that the through hole 421 is always communicated with the air outlet channel.

The present application also discloses embodiments in which the switching chamber 41 also has a vent 413; the gas introduced through the vent 413 can push the movable structure 42 to move in the switching chamber 41. This application makes the active structure 42 move in switching chamber 41 through the gas that blow into of blow vent 413 to active structure 42 application of force, and then plays the switching action, and this application can communicate blow vent 413 to heat transfer system for example on one section route of air conditioning system like this to can make air outlet channel switch between communicating with first pipe 21 or second pipe 22 according to heat transfer system's operating mode.

Referring to fig. 2-4, in some embodiments, the vent 413 includes a first vent 4131 and a second vent 4132, the first vent 4131 is capable of being filled with a first gas, the second vent 4132 is capable of being filled with a second gas, and the first gas has a gas pressure different from the second gas pressure to push the movable structure 42 to move in the switching chamber 41. And the pressure difference generated by the introduction of gas into the first vent hole 4131 and the second vent hole 4132 switches the gas outlet passage between communication with the first tube 21 or the second tube 22. The first vent 4131 and the second vent 4132 may be provided at both ends of a line connecting the first communication port 411 and the second communication port 412, respectively, and the first vent 4131 and the second vent 4132 may be provided at the housing 1 of the gas-liquid separator; so that the line for introducing gas can be directly communicated from the outside of the housing 1 of the gas-liquid separator to the switching chamber 41. That is, the switching mechanism 4 further includes a first cover plate and a second cover plate, which are disposed inside the housing 1 and enclose with the inner wall of the housing 1 to form a switching chamber 41. In FIG. 4, port a is referred to as second vent port 4132, and port b is referred to as first vent port 4131; the first vent port 4131 and the second vent port 4132 are provided on the housing 1 of the gas-liquid separator; the movable structure 42 is a bar-shaped structure, and the shapes of two end faces of the bar-shaped structure are adapted to the inner wall of the shell 1.

The application also discloses some embodiments, the gas-liquid separator further comprises an air supply pipeline, the air supply pipeline comprises a main pipe, a first branch pipe, a second branch pipe and an air pressure adjusting device, the first end of the main pipe is communicated with the air supply device, the second end of the main pipe is communicated with the first branch pipe and the second branch pipe, the first branch pipe is communicated with the first vent 4131, and the second branch pipe is communicated with the second vent 4132; the gas in the first branch pipe forms a first gas, the gas in the second branch pipe forms a second gas, and the gas pressure regulating device can regulate the gas pressure in the first branch pipe and/or the second branch pipe so that the gas pressure of the first gas is different from the gas pressure of the second gas. That is, the second vent 4132 is an a-port, the first vent 4131 is a b-port, and in addition to the enthalpy-increasing compressor 51 and the air conditioning system thereof, a set of pipelines with converted gas communication pressure are communicated with the a-port and the b-port of the switching mechanism 4, so that the gas communicated with the a-port and the b-port can realize pressure difference conversion, and the heating capacity improvement effect in the application can also be realized, and the effect is expanded to the application of the common compressor 51 and the cooling and heating air conditioning system. The air pressure adjusting device may be a throttling device, such as a capillary tube, an expansion valve, etc., a first throttling device may be disposed on the first branch tube, and no throttling device may be disposed on the second branch tube, i.e., the pressure of the air in the first branch tube is smaller than the pressure of the air in the main tube, and the pressure of the air in the second branch tube is equal to the pressure of the air in the main tube, so that the pressures of the air flowing out from the first branch tube and the second branch tube are different, and a pressure difference is formed to push the movable structure 42 to move in the switching chamber 41. The first branch pipe may be provided with a first throttling device, the second branch pipe is provided with a second throttling device, and the throttling capacity or the opening degree of the first throttling device is different from the throttling capacity or the opening degree of the second throttling device, so that the gas pressure in the first branch pipe and the gas pressure in the second branch pipe are different, a pressure difference is formed, that is, the gas pressure introduced into the port a and the port b is different, and the movable structure 42 is further pushed to move in the switching cavity 41.

The application also discloses some embodiments, the gas-liquid separator further comprises an outlet pipe 3, and the outlet pipe 3 forms an air outlet channel; the outlet pipe 3 comprises an inner section and an outer section, the inner section is positioned in the shell 1, and the outer section extends out of the shell 1; the inner diameter of the cross section of the shell 1 is phi D10z; the diameter of the first section 4211 is phid 42u; the diameter of the second section 4212 is phid 42D; the inner diameter of the outlet pipe 3 is phi D3; the distance between the central axis of the second tube 22 and the central axis of the housing 1 is S22; the distance between the central axis of the first tube 21 and the central axis of the housing 1 is S21; in the moving direction of the movable structure 42, the distance between the central axis of the first stage 4211 and the position on the movable structure 42 close to the first vent 4131 is L42a, and the distance between the central axis of the first stage 4211 and the position on the movable structure 42 close to the second vent 4132 is L42b; here, L42a is a distance from the second vent hole 4132 to the physical center of the through hole of the switching mechanism 4, L42b is a distance from the first vent hole 4131 to the physical center of the through hole of the switching mechanism, and the total length of the two is the length of both ends of the switching mechanism, and the central axes of the first stage 4211 and the second stage 4212 coincide with each other.

L42a+D42d/2≥D10z/2+D3/2；

The application also discloses some embodiments, L42b + D42D/2 is more than or equal to D10z/2+ Dc 3/2;

the application also discloses some embodiments, L42a + D42u/2 ≧ D22/2+ S22+ D10z/2;

the application also discloses some embodiments, L42b + D42u/2 ≧ D21/2+ S21+ D10z/2;

the application also discloses some embodiments, L42a + L42b ≧ D10z/2+ S21+ D21/2;

the application also discloses some embodiments, L42a + L42b ≧ D10z/2+ S22+ D22/2;

the application also discloses some embodiments, L42a + D42D/2 ≦ D10z/2+ S21-D21/2;

the application also discloses some embodiments, L42b + D42D/2 ≦ D10z/2+ S22-D22/2;

the application also discloses some embodiments, D22/2+ D21/2 ≦ S22+ S21;

the application also discloses some embodiments, D42u ≧ D22> D21.

In order to ensure that the working efficiency of the switching mechanism 4 of the gas-liquid separator is excellent, and to avoid gas leakage caused by poor matching between components to reduce the energy efficiency of the compressor 51 or to avoid undesirable noise caused by abrupt change of the gas path, the above relationship needs to be satisfied between the dimensions.

The application also discloses some embodiments, and the gas-liquid separator still includes the oil leak hole, and lubricating oil in the casing 1 can get into air outlet channel through the oil leak hole. The proper amount of lubricating oil in the gas-liquid separator can be brought into the compressor 51, so that the phenomenon of liquid impact caused by the fact that a large amount of lubricating oil enters the compressor 51 can be prevented, and the poor lubricating effect of the compressor 51 caused by the fact that the lubricating oil in the compressor 51 is too little can also be prevented. The oil leakage hole in the straight pipe of the liquid separator can ensure that oil circularly taken out by the system can return to the compressor.

When the gas-liquid separator further comprises a switching mechanism 4 and an outlet pipe 3, the switching mechanism 4 is arranged in the middle of the shell 1 in the axial direction, and the oil leakage holes are formed in the outlet pipe 3; the switching mechanism 4 is installed in the housing 1 of the gas-liquid separator in the present application, and is capable of switching the first pipe 21 or the second pipe 22 communicating with the gas inlet of the compressor 51 to perform suction during the operation of the compressor 51. When the switching mechanism 4 is disposed at the middle of the housing 1 in the axial direction, the oil leakage hole is disposed on the outlet pipe 3, so that a proper amount of lubricating oil in the gas-liquid separator can be brought into the compressor 51, a large amount of lubricating oil can be prevented from entering the compressor 51 to cause liquid impact, and the lubricating effect of the compressor 51 is poor due to too little lubricating oil in the compressor 51. The switching mechanism 4 is disposed at the axial middle part of the housing 1, which means that the switching mechanism 4 is at a certain distance from the bottom and the top of the housing 1. When the switching mechanism 4 is arranged in the middle of the axial direction of the shell 1, the oil leakage hole is arranged on the outlet pipe 3, and the oil leakage hole needs to be arranged at the position where a certain space is reserved at the bottom of the inner cavity of the steel pipe and the liquid separator along the axial direction, so that the oil storage condition is achieved. The switching mechanism is arranged in the middle of the axial direction, and the structure of the liquid distributor is slightly changed compared with that of a conventional liquid distributor, so that the realization difficulty is low; this application switching mechanism both sides have the retardation to the downward flow of the gas-liquid that gets into the knockout, have reduceed the disturbance of inspiratory gas-liquid to the oil bath of next step, make the oil return process more gentle, avoid a large amount of oil returns under the large-traffic.

The application also discloses some embodiments, when the gas-liquid separator still includes switching mechanism 4, switching mechanism 4 sets up in the bottom of casing 1, the oil leak hole is seted up on communicating pipe 2, the oil leak hole can be seted up on first pipe 21 and/or second pipe 22, namely make the oil leak hole make the stock solution space in switching mechanism 4's top, can bring the right amount lubricating oil in the gas-liquid separator into compressor 51 like this, can prevent that a large amount of lubricating oil from getting into compressor 51 and producing the liquid hammer phenomenon, also can prevent that the lubricating oil in compressor 51 is too little, and lead to compressor 51 lubricated effect poor. The switching mechanism 4 is disposed at the bottom of the casing, and at this time, an oil storage space needs to be formed at the upper portion of the switching mechanism 4, and oil leakage holes need to be newly opened, so that the first pipe 21 and the second pipe 22 of the communication pipe 2 need to be separately disposed. The first pipe 21 and the second pipe 22 are respectively used under the working conditions of refrigeration and heating, and the gas-liquid mixing proportions (the mixture of refrigerant gas state, refrigerant state and refrigeration oil) corresponding to the working conditions are different, so that the oil leakage holes of the two pipes can be respectively provided with axial distances and apertures, the oil leakage holes are more accordant with the working conditions, and the advantages are obtained in the aspects of capacity and reliability guarantee.

This application vapour and liquid separator, be equipped with the communicating pipe 2 of two kinds of different specifications in its casing 1, wherein the second pipe 22 is thick shorter, first pipe 21 is thin longer, the resonance frequency that makes thick steel pipe respectively is outside compressor 51 working range, the resonance frequency that makes thin steel pipe is within compressor 51 heating operating mode working range, two communicating pipes 2 are all fixed on switching mechanism 4 in the vapour and liquid separator part, one end mouth of pipe is located under filter screen 6 and the support 7, the other end mouth of pipe is in switching mechanism 4, switching mechanism 4 accessible pressure differential realizes appointing the mouth of pipe intercommunication air inlet in the compressor 51 operation. When the compressor 51 operates, the thicker communicating pipe 2 can be communicated with the air suction port of the compressor 51 under the conventional refrigeration operation working condition, so that the sufficient air suction amount is met, the refrigeration capacity is ensured, and the influence of the resonance of the gas-liquid separator on the vibration of the compressor 51 and the noise is avoided; when the low-temperature operation working condition needs to be heated, the thin steel pipe can be communicated with the air suction port of the compressor 51, and at the moment, the communicating pipe 2 can resonate with the air suction to cause obvious air suction pulsation, so that the air suction quantity can be greatly improved, and the heating capacity under the low-temperature condition is improved.

According to an embodiment of the present application, there is provided a compressor assembly, including a gas-liquid separator and a compressor 51 body, the gas-liquid separator being the above-mentioned gas-liquid separator; the outlet channel of the gas-liquid separator is communicated with the air inlet of the compressor 51 body.

The gas-liquid separator of the present application is mounted on a compressor 51 having an enthalpy increasing function. The compressor component comprises an upper cover, a shell 1, a stator, a rotor, a pump body, an enthalpy-increasing component 55, a lower cover, a gas-liquid separator and the like. The compressor 51 is connected to the air conditioning system, and sucks low-temperature and low-pressure gas through the outlet pipe 3 of the gas-liquid separator, and discharges medium-temperature and medium-pressure gas when the enthalpy increasing function is started through the enthalpy increasing component 55, and discharges high-temperature and high-pressure gas through the exhaust pipe 511.

According to an embodiment of the present application, there is provided an air conditioner including a compressor assembly, the compressor assembly being the above-mentioned compressor assembly.

The application also discloses some embodiments, when the air conditioner is in a heating state, the air outlet channel is switched to be communicated with the first pipe 21. When the air conditioner is in a cooling state, the outlet passage is switched to communicate with the second pipe 22. When the compressor 51 operates, the second pipe 22 is switched to communicate with the air suction port of the compressor 51 under the conventional refrigeration operation condition, so that sufficient air suction quantity is met, the refrigeration capacity is ensured, and the influence of the resonance of the gas-liquid separator on the vibration of the compressor 51 and the noise is avoided; when the low-temperature operation working condition needs heating, the first pipe 21 is switched to be communicated with the air suction port of the compressor 51, and at the moment, the communicating pipe 2 can resonate with the air suction to cause obvious air suction pulsation, so that the air suction quantity can be greatly improved, and the heating capacity under the low-temperature condition is improved. The gas-liquid separator can be optimized respectively during refrigeration and heating application, improves the heating capacity of the compressor 51, can reduce the requirement of the air conditioning system on the discharge capacity of the compressor 51, and is favorable for optimizing the air conditioning system in space, cost and energy consumption. The present application solves the problem of insufficient heating capacity when the gas-liquid separator is designed for optimal refrigeration capacity of the compressor 51.

The application also discloses some embodiments, the air conditioner also comprises a four-way valve 52, a first heat exchanger 53, a throttling component 54, a second heat exchanger 58 and an enthalpy increasing component 55 which are connected in sequence; when the gas-liquid separator further comprises a switching mechanism 4, the switching mechanism 4 comprises a movable structure 42, the switching mechanism 4 is provided with a switching cavity 41, the switching cavity 41 is further provided with a vent 413, and the vent 413 comprises a first vent 4131 and a second vent 4132, the exhaust port of the enthalpy increasing component 55 is communicated with the first vent 4131; the second vent 4132 can be switched between communicating with the first heat exchanger 53 or the second heat exchanger 58 to adjust the pressure difference between the first gas in the first vent 4131 and the second gas in the second vent 4132, thereby pushing the movable structure 42 to move in the switching chamber 41, so that the gas outlet channel communicates with the first tube 21 or the second tube 22. The gas-liquid separator is realized by applying the compressor 51 equipped with the gas-liquid separator to an air conditioning system with an enthalpy increasing function, adjusting the switching mechanism 4 in the gas-liquid separator component by utilizing the pressure difference among the suction pressure, the intermediate pressure and the exhaust pressure in the air conditioning system, so that the corresponding steel pipe is communicated with the air inlet of the pump body, and the steel pipe is switched to be communicated with a thicker and shorter steel pipe during refrigeration, thereby ensuring suction pressure stabilization and reducing vibration; during heating, the connection is switched to the connection of a thinner and longer steel pipe, the resonance frequency of the steel pipe is utilized to influence air suction pulsation, and the optimization of the refrigerating capacity and the heating capacity is respectively realized, so that the heating capacity of the air-conditioning system is improved.

The compressor 51 comprises a first-stage compression structure and a second-stage compression structure, wherein a part of gas compressed by the first-stage compression structure enters the second-stage compression structure to be compressed for the second time, the other part of gas compressed by the first-stage compression structure enters the enthalpy increasing component 55, a part of gas in the enthalpy increasing component 55 enters the flash evaporator 56 through the control valve 57, the other part of gas in the enthalpy increasing component 55 enters the first vent 4131, namely the b port, through the exhaust port to form first gas, and the first gas is intermediate-temperature and intermediate-pressure gas compressed by the first-stage compression structure.

Referring to fig. 6 in combination, during refrigeration, high-temperature and high-pressure gas discharged from an exhaust port of the compressor 51 (high-temperature and high-pressure gas compressed twice by the primary compression structure and the secondary compression structure in sequence) sequentially enters the first heat exchanger 53, the first throttle valve, the flash evaporator 56, the second throttle valve and the second heat exchanger 58 through the four-way valve 52, and at this time, the gas in the second heat exchanger 58 is low-temperature and low-pressure gas; then enters the port a, namely the second vent port 4132 through the four-way valve 52 to form a second gas, meanwhile, the intermediate-temperature intermediate-pressure gas compressed by the primary compression structure enters the enthalpy increasing component 55, one part of the gas in the enthalpy increasing component 55 enters the flash evaporator 56 through the control valve 57, and the other part of the gas in the enthalpy increasing component 55 enters the first vent port 4131, namely the port b through the exhaust port to form a first gas. At this time, the gas introduced into the port a, i.e., the second vent port 4132, is low-temperature low-pressure gas, and the gas introduced into the port b, i.e., the first vent port 4131, is medium-temperature medium-pressure gas; therefore, under the action of the pressure difference, the movable structure 42 is pushed and moves to the second position, one end of the through hole 421 faces at least partially the second communication port 412, and at least partially the other end faces the air outlet channel, so that the through hole 421 communicates the second communication port 412 with the air outlet channel. At this time, low-temperature low-pressure gas exists in the port a, medium-temperature medium-pressure gas exists in the port b, the movable structure 42 moves towards the port a due to pressure difference, the lower end pipe orifice of the second pipe 22 is communicated with the first section 4211 of the through hole 421 of the movable structure 42, the lower end orifice of the first pipe 21 is not communicated with the solid part of the movable structure 42, and low-temperature low-pressure gas entering from the gas-liquid separator inlet pipe 8 can enter the outlet pipe 3 through the second pipe 22, so that gas circulation in the system is realized.

In the heating state of the air conditioning system, the four-way valve 52 is provided such that the first heat exchanger 53 communicates with the inlet pipe 8 of the gas-liquid separator and the port a of the switching mechanism 4, the second heat exchanger 58 communicates with the discharge pipe 511 of the compressor 51, and the enthalpy increasing member 55 communicates with the port b of the switching mechanism 4. At this time, high-temperature and high-pressure gas exists in the port a, medium-temperature and medium-pressure gas exists in the port b, the movable structure 42 moves to the port b due to the pressure difference, the lower end pipe orifice of the first pipe 21 is communicated with the first section 4211 of the movable structure 42, the lower end orifice of the second pipe 22 is located on the solid part of the movable structure 42 and is not communicated, low-temperature and low-pressure gas entering from the gas-liquid separator inlet pipe 8 can enter the outlet pipe 3 through the second pipe 22, and gas circulation in the system is achieved.

Because the resonant frequency of the second pipe 22 is outside the operating range of the compressor 51 and the resonant frequency of the first pipe 21 is within the operating range of the heating working condition of the compressor 51 in the design, when the compressor 51 operates, the second pipe 22 can be communicated with the air suction port of the compressor 51 under the conventional refrigerating working condition, so that the sufficient air suction quantity is met, the refrigerating capacity is ensured, and the influence of the resonance of the gas-liquid separator on the vibration of the compressor 51 and the noise is avoided; for the heating operation condition, the first pipe 21 can be communicated with the air suction port of the compressor 51, at the moment, the communication pipe 2 can generate resonance with the air suction process to cause obvious air suction pulsation, so that the air suction quantity can be greatly improved, and the heating capacity under the low-temperature condition is improved. Referring to fig. 10 to 11, it can be seen that the present invention can greatly improve the heating capacity under low temperature conditions. FIG. 10 is a schematic view of the operation range and simulated cooling and heating conditions (cooling increase simulated minimum cooling, nominal cooling contrast, overall coverage low, medium, and high frequencies); FIG. 11 shows a comparison of the cooling capacity and the heating capacity of a conventional gas-liquid separator and a gas-liquid separator of the present invention in different embodiments; (wherein the heating capacity is calculated as the sum of the cooling capacity and power measured at the test stand).

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (17)

1. A gas-liquid separator, comprising:

a housing (1);

the air outlet channel can be communicated with an air suction port of the compressor (51);

the communicating pipe (2), the communicating pipe (2) can guide the gas in the shell (1) to flow out through the air outlet channel; the communication pipe (2) comprises a first pipe (21) and a second pipe (22); the resonance frequency of the first pipe (21) is the same as the operating frequency of the compressor (51); the second pipe (22) has an operating frequency different from that of the compressor (51); and the air outlet channel can be switched between being communicated with the first pipe (21) or the second pipe (22).

2. The gas-liquid separator according to claim 1, wherein said first tube (21) has a tube diameter D21; the pipe diameter of the second pipe (22) is D22; wherein D21< D22;

and/or the length L21 of the first tube (21) and the length L22 of the second tube (22); wherein L22< L21.

3. The gas-liquid separator according to claim 2, wherein 1.2 x D21 ≤ D22 ≤ 1.4 x D21; and/or, 0.65 × L21 ≦ L22 ≦ 0.85 × L21.

4. The gas-liquid separator according to claim 1, further comprising a switching mechanism (4), wherein the switching mechanism (4) has a switching cavity (41), and the switching cavity (41) is communicated with the gas outlet channel; the switching chamber (41) is capable of switching between communicating with the first tube (21) or the second tube (22).

5. The gas-liquid separator according to claim 4, wherein said switching mechanism (4) further comprises a movable structure (42); the switching chamber (41) has a first communication port (411) and a second communication port (412), the first tube (21) communicates with the first communication port (411), and the second tube (22) communicates with the second communication port (412); the movable structure (42) is movable within the switching chamber (41) to block the first communication port (411) or the second communication port (412) and thereby switch the switching chamber (41) between communicating with the first tube (21) or the second tube (22).

6. The gas-liquid separator according to claim 5, wherein said movable structure (42) has a through hole (421), and when said movable structure (42) blocks said first communication port (411), said through hole (421) communicates said second communication port (412) with said gas outlet channel; when the movable structure (42) blocks the second communication port (412), the through hole (421) communicates the first communication port (411) with the air outlet channel.

7. The gas-liquid separator according to claim 6, wherein the through hole (421) comprises a first section (4211) and a second section (4212) communicating in sequence in an axial direction; the first section (4211) has a smaller pore size than the second section (4212); the first segment (4211) can communicate with the first communication port (411) or the second communication port (412), and the second segment (4212) communicates with the air outlet channel.

8. The gas-liquid separator according to claim 7, wherein said switching chamber (41) further has a vent (413); the gas introduced from the vent hole (413) can push the movable structure (42) to move in the switching cavity (41).

9. The gas-liquid separator according to claim 8, wherein said vent (413) comprises a first vent (4131) and a second vent (4132), a first gas being able to be introduced into said first vent (4131), a second gas being able to be introduced into said second vent (4132), a gas pressure of said first gas being different from a gas pressure of said second gas to urge said movable structure (42) to move within said switching chamber (41).

10. The gas-liquid separator of claim 9, further comprising an air supply line comprising a main pipe, a first branch pipe and a second branch pipe, and an air pressure regulating device, wherein a first end of the main pipe communicates with the air supply device, a second end of the main pipe communicates with the first branch pipe and the second branch pipe, and the first branch pipe communicates with the first vent hole (4131), and the second branch pipe communicates with the second vent hole (4132); the gas in the first branch pipe forms the first gas, the gas in the second branch pipe forms the second gas, and the gas pressure regulating device can regulate the gas pressure in the first branch pipe and/or the second branch pipe so that the gas pressure of the first gas is different from the gas pressure of the second gas.

11. The gas-liquid separator of claim 9, further comprising an outlet pipe (3), the outlet pipe (3) forming the outlet channel; the outlet pipe (3) comprises an inner section and an outer section, the inner section is positioned in the shell (1), and the outer section extends out of the shell (1); the inner diameter of the cross section of the shell (1) is phi D10z; the diameter of the first section (4211) is phid 42u; the diameter of the second section (4212) is phid 42D; the inner diameter of the outlet pipe (3) is phi D3; the distance between the central axis of the second pipe (22) and the central axis of the shell (1) is S22; the distance between the central axis of the first pipe (21) and the central axis of the shell (1) is S21; in the moving direction of the moving structure (42), the distance between the central axis of the first segment (4211) and the position on the moving structure (42) close to the first vent (4131) is L42a, and the distance between the central axis of the first segment (4211) and the position on the moving structure (42) close to the second vent (4132) is L42b;

wherein L42a + D42D/2 is greater than or equal to D10z/2+ D3/2;

and/or L42b + D42D/2 is greater than or equal to D10z/2+ D3/2;

and/or L42a + D42u/2 is greater than or equal to D22/2+ S22+ D10z/2;

and/or L42b + D42u/2 is greater than or equal to D21/2+ S21+ D10z/2;

and/or L42a + L42b is greater than or equal to D10z/2+ S21+ D21/2;

and/or L42a + L42b is greater than or equal to D10z/2+ S22+ D22/2;

and/or L42a + D42D/2 is less than or equal to D10z/2+ S21-D21/2;

and/or L42b + D42D/2 is less than or equal to D10z/2+ S22-D22/2;

and/or D22/2+ D21/2 is less than or equal to S22+ S21;

and/or D42u ≧ D22> D21.

12. The gas-liquid separator according to any one of claims 1-11, further comprising an oil leak hole through which lubricating oil in the housing (1) can enter the gas outlet passage.

13. The gas-liquid separator according to claim 12, wherein when the gas-liquid separator further comprises a switching mechanism (4), and the gas-liquid separator further comprises an outlet pipe (3), the switching mechanism (4) is provided in an axial middle portion of the housing (1), and the oil leak hole is provided in the outlet pipe (3);

or when the gas-liquid separator further comprises a switching mechanism (4), the switching mechanism (4) is arranged at the bottom of the shell (1), and the oil leakage hole is formed in the communicating pipe (2).

14. A compressor assembly comprising a gas-liquid separator and a compressor (51) body, characterized in that the gas-liquid separator is according to any one of claims 1-13; the air outlet channel of the gas-liquid separator is communicated with the air suction port of the compressor (51) body.

15. An air conditioner including a compressor assembly, wherein said compressor assembly is as recited in claim 14.

16. The air conditioner according to claim 15, wherein when the air conditioner is in a heating state, the air outlet passage is switched to communicate with the first pipe (21); and/or when the air conditioner is in a refrigerating state, the air outlet channel is switched to be communicated with the second pipe (22).

17. The air conditioner as claimed in claim 15, further comprising a four-way valve (52), a first heat exchanger (53), a throttling part (54), a second heat exchanger (58) and an enthalpy increasing part (55) which are connected in sequence; when the gas-liquid separator further comprises a switching mechanism (4), the switching mechanism (4) comprises a movable structure (42), the switching mechanism (4) is provided with a switching cavity (41), the switching cavity (41) is further provided with an air vent (413), and the air vent (413) comprises a first air vent (4131) and a second air vent (4132), the exhaust port of the enthalpy increasing component (55) is communicated with the first air vent (4131); the second vent (4132) can be switched between communicating with the first heat exchanger (53) or the second heat exchanger (58) to adjust a pressure difference between the first gas in the first vent (4131) and the second gas in the second vent (4132) to push the movable structure (42) to move in the switching chamber (41) so that the gas outlet channel communicates with the first tube (21) or the second tube (22).

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