CN219368057U - Air conditioning system - Google Patents

Abstract

The utility model discloses an air conditioning system which comprises a compressor, a condenser, a liquid storage tank, a liquid pump assembly and a throttling device which are sequentially communicated, wherein an exhaust port is formed in the liquid storage tank, and the exhaust port is communicated with an air inlet of at least one gas bearing in the compressor. When the device is applied, after the refrigerant enters the liquid storage tank from the condenser, part of liquid can form flash gas due to sudden pressure reduction, and then the flash gas in the liquid storage tank can enter the gas bearing through the exhaust port so as to supplement the gas for the gas bearing. In the air conditioning system, partial flash gas which enters the liquid storage tank from the rear end of the condenser is utilized, so that loss caused by reduction of total pressure energy after flash is reduced, and meanwhile, the cost and the complexity of system management are reduced. In summary, the air conditioning system can effectively solve the problem of energy loss in the air supply process of the air bearing.

Description

Air conditioning system

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air conditioning system.

Background

In the current system combining the gas suspension centrifugal compressor and the fluorine pump, a gas hydrostatic bearing is adopted for gas suspension, so that gas support of a rotating shaft is realized; therefore, the gas bearing needs to be continuously supplied with gas, otherwise, the rotating shaft cannot suspend, and the reliability problems such as abrasion or clamping of the rotating shaft are caused;

at the early stage of technical application, the fusion degree of the product is insufficient, the existing gas supply mode is an external liquid supply tank, the liquid state is converted into the gas state, and meanwhile, a liquid pump suction device is additionally arranged at the front end of the liquid supply tank so as to maintain the liquid amount in the liquid supply tank; the mode increases the energy consumption of the pump and the cost of the newly added liquid pump and the liquid storage tank, and simultaneously does not fully utilize the gas phase and the liquid phase of the system; increasing the complexity of the system.

In summary, how to effectively solve the problem of energy loss in the gas supply process of the gas bearing is an urgent need of those skilled in the art.

Disclosure of Invention

Accordingly, the present utility model is directed to an air conditioning system that can effectively solve the problem of energy loss in the air supply process of the air bearing.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

an air conditioning system comprises a compressor, a condenser, a liquid storage tank, a liquid pump assembly and a throttling device which are sequentially communicated, wherein an exhaust port is formed in the liquid storage tank, and the exhaust port is communicated with an air inlet of at least one gas bearing in the compressor.

When the device is applied, after the refrigerant enters the liquid storage tank from the condenser, part of liquid can be vaporized to form flash gas due to sudden pressure reduction, and then the flash gas in the liquid storage tank can enter the gas bearing through the exhaust port so as to supplement the gas to the gas bearing. In the air conditioning system, partial flash gas which enters the liquid storage tank from the rear end of the condenser is utilized, so that loss caused by reduction of total pressure energy after flash is reduced, and meanwhile, the cost and the complexity of system management are reduced. In summary, the air conditioning system can effectively solve the problem of energy loss in the air supply process of the air bearing.

Preferably, the control valve group is further included; the exhaust port of the liquid storage tank is communicated with the air inlet of the gas bearing in a closing way through the control valve group; the outlet of the compressor is communicated with the air inlet of the gas bearing in a closing way through the control valve group.

Preferably, the control valve group comprises a first switch control valve and a second switch control valve; the exhaust port of the liquid storage tank is communicated with the air inlet of the gas bearing in a closing way through the first switch control valve; the outlet of the compressor is communicated with the air inlet of the gas bearing in a closing way through the second switch control valve.

Preferably, the device further comprises heating means for heating the refrigerant in the cavity of the liquid storage tank.

Preferably, the heating device is one or more of an electric heating wire and an electrode heating device.

Preferably, the liquid storage device further comprises a heating pipe which is arranged around the inner cavity of the liquid storage tank and used for guiding liquid; the pipe orifice at one end of the heating pipe is communicated with the outlet of the compressor, and the other end of the heating pipe is communicated with the inlet of the liquid storage tank; the heating pipe is provided with one or more of the following valve bodies: switching valve, check valve and flow control valve.

Preferably, the gas bearing is a radial gas bearing and/or an axial gas bearing in the compressor.

Preferably, the compressor comprises a primary compression portion and a secondary compression portion, an inlet of the secondary compression portion being in communication with an outlet of the primary compression portion.

Preferably, the device further comprises a bearing pressure sensor for detecting the gas bearing gas inlet.

Preferably, the device further comprises a controller, wherein the controller controls the air outlet of the liquid storage tank to supply air to the gas bearing when the compressor is not started, controls the compressor to start when the air pressure of the gas bearing meets the suspension requirement, and controls the air outlet of the compressor to directly supply air to the gas bearing after the compressor is started.

Preferably, the compressor further comprises a cooling tube surrounding the compressor; the inlet of the cooling pipe is communicated with: a passageway between the liquid pump assembly and the evaporator; the outlet of the cooling pipe is communicated with the inlet of the compressor.

Preferably, the inlet of the cooling tube communicates with: the passage between the liquid pump assembly and the restriction device communicates.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of another air conditioning system according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of another air conditioning system according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of another air conditioning system according to an embodiment of the present utility model.

The figures are marked as follows:

the device comprises a compressor 1, a condenser 2, a liquid storage tank 3, a liquid pump assembly 4, a throttling device 5, an evaporator 6, a first switch control valve 7, a second switch control valve 8, a heating device 9, a heating pipe 10, a bearing pressure sensor 11, a main channel 12, a cooling pipe 13 and a gas bearing 14.

Detailed Description

The embodiment of the utility model discloses an air conditioning system, which is used for effectively solving the problem of energy loss in the air supply process of a gas bearing.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to fig. 4, fig. 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present utility model; fig. 2 is a schematic structural diagram of another air conditioning system according to an embodiment of the present utility model; fig. 3 is a schematic structural diagram of another air conditioning system according to an embodiment of the present utility model; fig. 4 is a schematic structural diagram of another air conditioning system according to an embodiment of the present utility model.

In some embodiments, as shown in fig. 1-4, the present embodiment provides an air conditioning system, specifically, the air conditioning system includes a compressor 1, a condenser 2, and a liquid storage tank 3, and generally further includes a liquid pump assembly 4, a throttle device 5, and an evaporator 6, where the compressor 1, the condenser 2, the liquid storage tank 3, the liquid pump assembly 4, the throttle device 5, and the evaporator 6 are sequentially disposed in communication. The high-temperature and high-pressure fluid compressed by the compressor 1 enters the condenser 2, is liquefied into liquid refrigerant after being cooled by heat release of the condenser 2, enters the liquid storage tank 3 to be collected, is pumped to the throttling device 5 through the liquid pump assembly 4, flows into the evaporator 6 after being throttled by the throttling device 5, evaporates and absorbs heat to form low-temperature and low-pressure gas, and then flows into the compressor 1 to enable the compressor 1 to be compressed into high-temperature and high-pressure gas.

In some embodiments, wherein the liquid pump assembly 4 is connected in series in the refrigeration system, when the load is low, liquid pump mode refrigeration is employed, while the compressor 1 is shut down, the internal refrigerant flow is accelerated by the liquid pump, the refrigerant absorbs heat at the evaporator 6 and releases heat at the condenser 2. When the load is higher, the compressor 1 is started, the liquid pump assembly 4 can be selectively started or not started, and when both the compressor 1 and the liquid pump assembly 4 are started, a larger refrigerating effect can be achieved.

In some embodiments, as shown in fig. 1-4, the liquid storage tank 3 is provided with a gas outlet, wherein the gas outlet is communicated with a gas inlet of at least one gas bearing 14 in the compressor 1, so that the gas in the liquid storage tank 3 can be led into a cavity of the gas bearing 14, and the cavity of the gas bearing 14 is filled with high-pressure gas. When needed, the air outlet of the liquid storage tank 3 is generally arranged at the top or other middle upper position of the tank cavity, and the air outlet should be higher than the highest design liquid level of the liquid storage tank 3 so as to avoid that liquid in the liquid storage tank 3 enters the gas bearing 14 through the air outlet. It should be noted that, in practical application, the compressor may be disposed at a higher position relative to the condenser or the liquid storage tank, and if not, a backflow curve is generally added, so as to mainly prevent such and refrigerant backflow and migration phenomena due to gravitational potential energy.

It should be noted that, in the compressor 1, at least one gas bearing 14 is generally required to be disposed on the rotating shaft of the compressor 1, so as to support the rotating shaft in the radial direction and the axial direction, and generally at least one radial bearing and/or at least one axial bearing is the gas bearing 14. In some specific applications, radial bearings and axial bearings are respectively disposed at two ends of the rotating shaft of the compressor 1, and the radial bearings at two ends of the rotating shaft are generally air bearings 14, so that the radial air bearings 14 at two ends can be selectively communicated with the exhaust port of the liquid storage tank 3, and the air bearings 14 at two ends can be communicated. Wherein the gas bearing 14 is typically a hydrostatic bearing.

In some embodiments, after the refrigerant enters the liquid storage tank 3 from the condenser 2, a portion of the liquid may form flash gas due to the sudden pressure drop, and then the flash gas in the liquid storage tank 3 may enter the gas bearing 14 through the gas outlet to supplement the gas bearing 14. In the air conditioning system, partial flash gas which enters the liquid storage tank 3 from the rear end of the condenser 2 is utilized, so that loss caused by the reduction of total pressure after flash is reduced, and meanwhile, the cost and the complexity of system management are reduced. In summary, the air conditioning system can effectively solve the problem of energy loss in the air supply process of the air bearing 14.

In some embodiments, as shown in fig. 2-3, the gas exiting the compressor 1 outlet may also be split directly into a portion into the gas bearing 14 before flowing into the condenser 2. If a bypass port is provided in the passage between the outlet of the compressor 1 and the inlet of the condenser 2, the ratio of the bypass port diameter to the diameter of the main passage 12 can be controlled according to the flow rate. Through which refrigerant is then fed to at least one gas bearing 14 in the compressor 1. The exhaust port and the bypass port of the liquid storage tank 3 may supply air to the same gas bearing 14, or may supply air to different gas bearings 14, and may not be restricted to each other, so that the respective air supply targets may be selected as needed.

In some embodiments, valve bodies such as on-off valves, flow regulating valves, etc. may be added between the outlet of the compressor 1 (e.g., the bypass port described above) and the inlet of the corresponding gas bearing 14 to control flow and open and closed states. So that gas can be selectively supplied to the gas bearing 14.

In some embodiments, a valve body such as an on-off valve, a flow rate adjusting valve, etc. may be provided between the exhaust port of the liquid storage tank 3 and the gas bearing 14 to control the flow rate and the open-close state. So that gas can be selectively supplied to the gas bearing 14.

In some embodiments, when the outlet of the compressor 1 (such as the bypass port) and the exhaust port of the liquid storage tank 3 supply air to the same gas bearing 14, the air may be communicated to the corresponding gas bearing 14 through the same switching valve or flow regulating valve, or may be communicated to the corresponding gas bearing 14 through different switching valves or flow regulating valves to control the switching or flow regulation, respectively.

In some embodiments, the air conditioning system may further include a control valve set. Wherein the exhaust port of the liquid storage tank 3 is communicated with the air inlet of the gas bearing 14 in a closing way through a control valve group; the outlet of the compressor 1 is in closable communication with the inlet of the gas bearing 14 via a control valve block. The gas bearing 14 can be supplied with gas from the gas discharge port of the liquid storage tank 3, and the gas bearing 14 can be supplied with gas from the outlet (the bypass port) of the compressor 1 can be controlled.

In some embodiments, the communication between the exhaust port of the liquid storage tank 3 and the air inlet of the air bearing 14, and the communication between the outlet of the compressor 1 and the air inlet of the air bearing 14 may be coordinated so that only one of the exhaust port of the liquid storage tank 3 and the outlet of the compressor 1 can supply air to the compressor 1. Specifically, the control valve set may include a three-way valve, where two inlets of the three-way valve are respectively connected to the exhaust port of the liquid storage tank 3 and the outlet (e.g., the bypass port) of the compressor 1, and the outlet of the three-way valve is connected to the inlet of the gas bearing 14. The control valve group can be a two-position reversing valve or a three-position reversing valve.

In some embodiments, as shown in fig. 2-3, the control valve block may be made to include a first on-off control valve 7 for convenience of control. Wherein the exhaust port of the liquid storage tank 3 is in closable communication with the air inlet of the air bearing 14 through the first switch control valve 7, so that when the first switch control valve 7 is opened, the air discharged from the exhaust port of the liquid storage tank 3 can enter the air bearing 14, and when the first switch control valve 7 is closed, the air discharged from the exhaust port of the liquid storage tank 3 cannot enter the air bearing 14.

In some embodiments, the control valve group further comprises a second on-off control valve 8, wherein the outlet of the compressor 1 (e.g. the bypass port described above) is in closable communication with the inlet of said gas bearing 14 via said second on-off control valve 8. So that the gas discharged from the outlet (e.g., the bypass port) of the compressor 1 can be introduced into the gas bearing 14 when the second on-off control valve 8 is opened, and the gas discharged from the outlet (e.g., the bypass port) of the compressor 1 cannot be introduced into the gas bearing 14 when the second on-off control valve 8 is closed.

In some embodiments, the control valve group is provided with the first switch control valve 7 and the second switch control valve 8 at the same time, so that the first switch control valve 7 and the second switch control valve 8 can be alternatively opened, or closed at the same time, or opened at the same time when in use.

In some embodiments, at least one of the first switch control valve 7 and the second switch control valve 8 is a flow control valve, for example, the first switch control valve 7 and/or the second switch control valve 8 is a flow control valve.

In some embodiments, when it is desired to supply gas through the liquid reservoir 3, there may be insufficient gas content in the liquid reservoir 3, such as insufficient flash gas formation. Some external force can be used to promote the liquid in the liquid storage tank 3 to be more converted into gas, such as a heating device 9, an oscillating device and the like.

In some embodiments, as shown in fig. 1-3, a heating device 9 is further included for heating the refrigerant in the cavity of the liquid storage tank 3. Specifically, the heating means 9 is an electric heating means 9, a combustion heating means 9, a water heating means 9 or other heat conducting means. Wherein the heat of the heating means 9 may come from the system itself, such as from the compressor 1. It is considered that the heating device 9 may still be required in the non-operating state of the compressor 1, on the basis of which at least a part of the heat source of the heating device 9 comes from the outside.

In some embodiments, the heating means 9 may be one or more of an electric heating wire and an electrode heating means 9, such that the heat of the heating means 9 is directly from the outside, such that the heating of the heating means 9 is not affected by whether the compressor 1 is turned on. The heating device 9 may be coiled or wound inside the liquid storage tank 3 or outside the liquid storage tank 3, so as to heat the refrigerant in the inner cavity of the liquid storage tank 3, and particularly, the liquid refrigerant part needs to be intensively heated. Of course the heating means 9 may be an electrically heated rod extending into the reservoir 3.

In some embodiments, as shown in fig. 4, a heating pipe 10 for guiding the liquid may be further disposed around the inner cavity of the liquid storage tank 3, wherein the heating pipe 10 is used for guiding the liquid. The heating tube 10 should be the heating tube 10, so that heat exchange can be performed between the inside and the outside of the heating tube 10, and the heating tube 10 adopts a metal tube and a plastic tube with high heat conduction rate, and it should be noted that the non-heating section of the heating tube 10 may be made of other non-heat-conducting materials, and of course, may also be made of a heat-insulating material. Wherein heating pipe 10 can set up in liquid storage pot 3, also can set up outside liquid storage pot 3, and specifically, can set up as required, when setting up outside liquid storage pot 3, should guarantee that liquid storage pot 3 whole or its main part is the heat conductor to make the heat outside liquid storage pot 3 can enter into in liquid storage pot 3 through liquid storage pot 3 jar body part, in order to heat the structure in the liquid storage pot 3. It is contemplated that the liquid reservoir 3 may be a metal reservoir or a plastic reservoir having a fast heat transfer rate.

In order to ensure the heating power, the heating pipe 10 may be provided to surround the liquid storage tank 3, and may be wound around the liquid storage tank 3, or may be wound around the outside of the liquid storage tank 3 in a longitudinal direction. Of course, the heating pipe 10 may also be provided through the liquid storage tank 3, and if a penetration is adopted, the sealing effect should be ensured. The heating pipe 10 may be introduced with an external high-temperature fluid or with an internal high-temperature fluid.

In some embodiments, one end of the heating tube 10 may be connected to the outlet of the compressor 1, and the other end may be connected to the inlet of the liquid storage tank 3. Through the communication mode, part of fluid flowing out of the outlet of the compressor 1 is guided to flow into the heating pipe instead of the condenser 2, when flowing through the liquid storage tank 3 along the heating pipe, heat is released at the liquid storage tank 3, and is conducted into liquid in the liquid storage tank 3 through the pipe body of the heating pipe and the tank body of the liquid storage tank 3, so that the internal liquid refrigerant is heated, and part of liquid refrigerant is converted into gaseous refrigerant; the exothermic refrigerant then continues to flow along the heating tube to enter the inlet of the accumulator 3.

In some embodiments, the main channel 12 between the outlet of the compressor 1 and the inlet of the condenser 2 may be provided with a first bypass opening for communicating with the inlet of the heating pipe 10, the first bypass opening preferably being arranged away from the outlet of the compressor 1 by being arranged towards the inlet of the condenser 2, wherein the first bypass opening is not so large that the influence on the fluid in the main channel 12 is negligible, and in particular, the ratio of the first bypass opening to its main channel 12 may be adjusted according to the actual heating requirement of the liquid storage tank 3.

In some embodiments, the main channel 12 between the outlet of the condenser 2 and the inlet of the reservoir 3 may be provided with a second bypass to communicate with the outlet of the heating pipe 10. Wherein the setting consideration of the second bypass port may be referred to the setting consideration of the first bypass port.

In some embodiments, wherein the heating tube 10 may be in a fully through state from the first bypass port to the second bypass port, various valves and the like are not provided. Of course, the heating pipe 10 can be provided with one or more one-way valves, switching valves, flow regulating valves and the like in the following valve bodies; wherein the one-way valve can effectively avoid the backflow of fluid in the heating pipe 10; the flow regulating valve can well control the fluid flow in the heating pipe 10 so as to control the heating power; wherein the switch valve can make the heating pipe 10 in a closed state, so that whether the heating pipe 10 is heated or not can be selected by controlling the switch valve to be opened or closed.

In some embodiments, the heating pipe 10 and the electric heating device 9 may be provided at the same time, so that when the compressor 1 is not started, the electric heating device 9 is selected to heat, and the heating pipe 10 may be in an on state, or an on-off valve may be provided so that the heating pipe 10 may be closed by the on-off valve. The heating pipe 10 may be selected to heat after the compressor 1 is started, and the electric heating device 9 may be turned on or turned off.

In some embodiments, wherein the compressor 1 may be a multi-stage compressor 1, such as comprising a primary compression section and a secondary compression section, wherein an inlet of the secondary compression section is in communication with an outlet of the primary compression section. In the two-stage compressor 1, the first-stage compression portion is a first-stage compression portion, and the second-stage compression portion is a second-stage compression portion.

In some embodiments, such as a multi-stage compressor 1, in which both ends of a rotation shaft of the compressor 1 are provided with rotor blades, the two ends of the rotating blades are respectively corresponding to different stages of compression parts, such as a primary compression part and a secondary compression part. The radial bearings and the axial bearings may be provided at both ends of the rotation shaft, and the radial bearings at both ends may be the gas bearings 14 described above to supply gas to the radial bearings at both ends simultaneously from the exhaust port of the liquid storage tank 3 and/or the outlet of the compressor 1, but the axial bearings may also be the gas bearings 14 described above to supply gas to the axial bearings simultaneously.

In some embodiments, as shown in fig. 2-3, the air conditioning system may be further comprised of a bearing pressure sensor 11 for detecting the air inlet of the gas bearing 14. When it is desired to supply gas to a plurality of gas bearings 14, a total passage may be provided where the pressure sensor is located, and the gas inlets of the respective gas bearings 14 are communicated with the outlet of the total passage. And the inlet of the total passage communicates with the discharge port of the reservoir 3 and/or the outlet of the compressor 1, as described above, and the inlet of the total passage communicates with one end of the first on-off control valve 7 and one end of the second on-off control valve 8.

In some embodiments, a controller may be correspondingly provided, so that, under the control of the controller, before the compressor 1 is started, gas is supplied to the gas bearing 14 through the exhaust port of the liquid storage tank 3, and after the compressor 1 is started, gas discharged through the outlet of the compressor 1 is directly supplied to the gas bearing 14.

In some embodiments, when the air is supplied through the air outlet of the liquid storage tank 3, if the flash air is insufficient to meet the pressure requirement of the air bearing 14, the controller may further control the heating device 9 to heat until the air outlet pressure of the liquid storage tank 3 meets the requirement, the air bearing 14 achieves the suspension supporting effect, and then the compressor 1 may be turned on.

In some embodiments, after the compressor 1 is started, the gas discharged through the outlet of the compressor 1 is directly supplied to the gas bearing 14, if the pressure requirement of the gas bearing 14 still cannot be met, then the gas outlet of the liquid storage tank 3 can be controlled to simultaneously supply gas to the gas bearing 14, the flash gas in the liquid storage tank 3 can be firstly used for supplying gas, and when the flash gas in the liquid storage tank 3 cannot meet the requirement, a part of the high-temperature and high-pressure gas at the outlet of the compressor 1 can be guided to the liquid storage tank 3 through the heating pipe 10 to heat the liquid storage tank 3, and of course, the liquid storage tank 3 can also be heated through the heating device 9, such as the heating wire heating pipe 10.

In some embodiments, the air conditioning system may further include a compressed air outlet pressure sensor for detecting an outlet discharge pressure of the compressor 1, and the controller may receive the detection value of the bearing pressure sensor 11 and the detection value of the compressed air outlet pressure sensor at the same time, and may be capable of opening and closing each valve element of the control valve set, for example, to establish control connection with the first switch control valve 7 and the second switch control valve 8.

In some embodiments, the controller controls the first on-off control valve 7 to be opened and the second on-off control valve 8 to be closed when the air conditioning system is started or when it is required to cool by starting the compressor 1. Then, if the detected value of the bearing pressure sensor 11 still does not exceed the preset value after the preset time period passes, the controller further controls the heating device 9 to start to work. And controlling the compressor 1 to start up and run until the detection value of the bearing pressure sensor 11 is not smaller than a preset value.

In some embodiments, the controller may control the first switch control valve 7 to be closed and the second switch control valve 8 to be opened after the compressor 1 is started and when the detected value of the compressed air pressure sensor is not less than the preset pressure value, and if the heating device 9 is in an open state at this time, the heating device 9 needs to be controlled to be closed.

In some embodiments, after the compressor 1 is started, when the detected value of the compressed air pressure sensor is stable, that is, when the fluctuation range does not exceed the preset range, and the detected value of the compressed air pressure sensor is not less than or less than the preset pressure value, the controller controls the first switch control valve 7 to be opened, and simultaneously controls the second switch control valve 8 to be opened, if the detected value of the bearing pressure sensor 11 does not exceed the preset value, the heating pipe 10 can be further controlled to be turned on, and the heating strength can be adjusted through the flow regulating valve on the heating pipe 10, so as to improve the exhaust gas amount of the exhaust port of the liquid storage tank 3, and adjust the exhaust gas amount through the flow regulating valve. It is of course also possible to activate the heating device 9 either simultaneously or separately to increase the exhaust volume of the exhaust opening of the reservoir 3.

In some embodiments, the axial middle portion of the compressor 1 may be cooled, and a cooling device may be provided to cool the axial middle portion of the compressor 1.

In some embodiments, as shown in fig. 3, the above-mentioned cooling means may be a cooling pipe 13 surrounding the compressor 1. Wherein the inlet of the cooling tube 13 is connected to: a passageway between the liquid pump assembly 4 and the evaporator 6. The outlet of the cooling pipe 13 communicates with the inlet of the compressor 1. So that the liquid and/or gas portion of the liquid pump assembly 4 is directed into the cooling tube 13, absorbs heat from the compressor 1 as it flows through the compressor 1, and is then discharged to the inlet of the compressor 1 to be compressed by the compressor 1 to form a high temperature and high pressure gas.

In some embodiments, a bypass port may be provided in the main passage 12 between the liquid pump assembly 4 and the throttle device 5, and a bypass port may be provided in the main passage 12 between the throttle device 5 and the evaporator 6 to communicate with the inlet of the cooling pipe 13. Specifically, it is preferable to communicate the inlet of the cooling pipe 13 to: a passage between the liquid pump assembly 4 and the throttle device 5.

In some embodiments, in an air conditioning system in which the compressor 1 is combined with the liquid pump assembly 4, the gas bearing gas supply tank is eliminated; combining the liquid storage tank 3 and the air supply tank into a structure; the maximum use of the press vent and flash gas and liquid in the reservoir 3. The mode of adding the liquid storage tank 3 to the pump adopted by the gas bearing 14 is canceled, the bypass of the existing liquid storage tank 3 at the condensing end or the front end of the liquid pump is utilized to realize the gas supply, the pump for the gas bearing 14 to supply the gas is mainly used for sucking liquid, the tail end of the condenser 2 is already used for supplying the liquid, and the gas supply pressure difference can be combined with the heating device 9 as an aid to realize the set requirement for gas supply. Meanwhile, the flash gas which is formed by the rear end of the condenser 2 entering the liquid storage tank 3 can be utilized in the mode, so that the loss caused by the reduction of the total pressure energy after flash is reduced, and meanwhile, the cost and the complexity of system management are reduced.

The pressure of the liquid storage tank 3 is used as a gas supply source of the gas bearing 14, and if the pressure is insufficient, the pressure difference between the liquid storage tank and the bearing cannot be achieved, the liquid storage tank is realized by an auxiliary pressure lifting device such as an electrode heating or electric heating tube heating lamp mode; the tank is also used as a liquid storage of a liquid pump, and flash gas formed above the liquid storage tank 3 can be used as a gas supply source of a gas bearing without overpressure discharge.

The combined air supply mode is adopted, so that the power consumption is reduced, when the air supply device is started, the liquid of the air supply device is converted into the air, or the air of the air supply device is directly adopted to suspend the bearing, after the air supply device is operated, the system forms the pressure difference between the exhaust air and the bearing end, and the air exhausted by the exhaust end is shunted to the air supply end of the bearing; the gas portion having pressure, which is preliminarily formed from the discharge end of the compressor 1, may be branched to the bearing end at this time, or may be branched to the bearing end after being discharged to the outside of the compressor 1.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an air conditioning system, includes compressor, condenser, liquid storage pot, liquid pump subassembly and throttling arrangement that communicate in proper order, its characterized in that, the gas vent has been seted up to liquid storage pot department, the gas vent with the air inlet intercommunication of at least one gas bearing in the compressor.

2. The air conditioning system of claim 1, further comprising a control valve block; the exhaust port of the liquid storage tank is communicated with the air inlet of the gas bearing in a closing way through the control valve group; the outlet of the compressor is communicated with the air inlet of the gas bearing in a closing way through the control valve group.

3. The air conditioning system of claim 2, wherein the control valve bank includes a first on-off control valve and a second on-off control valve; the exhaust port of the liquid storage tank is communicated with the air inlet of the gas bearing in a closing way through the first switch control valve; the outlet of the compressor is communicated with the air inlet of the gas bearing in a closing way through the second switch control valve.

4. The air conditioning system of claim 1, further comprising a heating device for heating the refrigerant in the reservoir cavity, the heating device being one or more of an electrical heating wire and an electrode heating device.

5. The air conditioning system of claim 1, further comprising a heating tube disposed about the reservoir interior cavity and configured to channel liquid; the pipe orifice at one end of the heating pipe is communicated with the outlet of the compressor, and the other end of the heating pipe is communicated with the inlet of the liquid storage tank; the heating pipe is provided with one or more of the following valve bodies: switching valve, check valve and flow control valve.

6. An air conditioning system according to claim 1, characterized in that the gas bearings comprise radial gas bearings and/or axial gas bearings in the compressor.

7. The air conditioning system of claim 6, wherein the compressor includes a primary compression portion and a secondary compression portion, an inlet of the secondary compression portion being in communication with an outlet of the primary compression portion.

8. The air conditioning system of claim 7, further comprising a bearing pressure sensor for detecting the air bearing air inlet.

9. The air conditioning system of claim 1, further comprising a controller that controls the air outlet of the liquid storage tank to supply air to the air bearing when the compressor is not started, and controls the compressor to start when the air pressure of the air bearing meets a suspension requirement, and controls the air outlet of the compressor to directly supply air to the air bearing after the compressor is started.

10. An air conditioning system according to any of claims 1-9, characterized in that:

further comprising a cooling tube surrounding the compressor;

the inlet of the cooling pipe is communicated with: a passage between the liquid pump assembly and the evaporator, or a passage between the liquid pump assembly and the throttle device;

wherein the outlet of the cooling pipe is communicated with the inlet of the compressor.