CN219281962U - Air-filling compressor and air conditioner - Google Patents

Abstract

The utility model provides a gas-filling compressor and an air conditioner, wherein the gas-filling compressor comprises: the device comprises a shell, a first pump body and a second pump body, wherein the first pump body and the second pump body are arranged in the shell, and an air suction cavity is formed in the shell; the first pump body is provided with a first air suction port, a first air exhaust port and a first air supplementing port, the second pump body is provided with a second air suction port and a second air exhaust port, and the first air suction port and the second air suction port are communicated with the air suction cavity for air suction; the second exhaust port can be communicated with the first air supplementing port, so that compressed air in the second pump body can be supplemented into the first pump body from the first air supplementing port. According to the utility model, the second pump body is used for effectively compressing and pressurizing air suction, and the compression cavity of the first pump body is used for supplementing air, so that the air suction mass flow of the first pump body is effectively improved, the total air suction mass flow of the compressor is improved, and the refrigerating/heating capacity is improved.

Description

Air-filling compressor and air conditioner

Technical Field

The utility model relates to the technical field of compressors, in particular to an air-filling compressor and an air conditioner.

Background

For compressors, it is always desirable to operate at a higher efficiency, and in the actual use of the scroll compressor, there is a situation that the suction capacity is insufficient and the discharge capacity is required to be increased or the air supplementing capacity is required to be increased to generate a larger amount of refrigeration/heating, especially in the low temperature heat pump application scenario, the mass of the unit suction volume refrigerant is greatly reduced due to the low temperature and density of the suction refrigerant, and the larger amount of heating is realized by adopting a pump body assembly with larger discharge capacity or increasing the rotation speed of the compressor, while adopting a pump body with larger discharge capacity clearly increases the radial dimension of the compressor, which is not beneficial to the miniaturization goal, and the increase of the rotation speed reduces the efficiency of the compressor and adversely affects the reliability of the pump body.

Patent (CN 110630498a—scroll refrigeration compressor with suction supercharging) proposes a suction supercharging structure to increase the suction mass flow, however, this open supercharging mode has the problem of pressure drop after the discharge, and cannot achieve effective compression supercharging; the patent CN113323876a and CN114215761a provide a boost wind wheel at the air intake to perform a certain boost design on the air intake pressure (as shown in fig. 1 of the background art), and in this way, the size of the boost wind wheel is greatly limited and the driving force is limited, so that the improvement of the air intake compression and the flow rate in the above way is limited.

Patent CN110285060a proposes a two-stage multiple air-supplementing screw compressor structure to implement two-stage compression and air-intake air-supplementing lifting of refrigerant (as shown in background art fig. 2), in which the air-intake lifting is conducted from outside the condenser, the air-supplementing is conducted by adding the external conduction of the condenser on the basis of the conventional two-stage compression, for the scroll compressor, this mode still results in further increase of the size of the compressor, and makes the overall structure of the compressor more complex, and for the refrigeration condition, the increase of the air-supplementing amount of this mode does not help the air-intake lifting.

Because the compressor in the prior art has the technical problems of low air suction flow, particularly low air suction mass flow when a low-temperature heat pump is used, the utility model designs an air supplementing compressor and an air conditioner.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defect of low air suction flow of the compressor in the prior art, thereby providing the air-supplementing compressor and the air conditioner.

In order to solve the above problems, the present utility model provides a gas-filling compressor comprising:

the device comprises a shell, a first pump body and a second pump body, wherein the first pump body and the second pump body are arranged in the shell, and an air suction cavity is formed in the shell; the first pump body is provided with a first air suction port, a first air exhaust port and a first air supplementing port, the second pump body is provided with a second air suction port and a second air exhaust port, and the first air suction port and the second air suction port are communicated with the air suction cavity for air suction; the second exhaust port can be communicated with the first air supplementing port, so that compressed gas in the second pump body can be supplemented into the first pump body from the first air supplementing port.

In some embodiments, the air pump further comprises a front cover, an air supplementing channel is arranged in the shell, the air supplementing channel is arranged in the front cover, one end of the air supplementing channel in the shell can be communicated with the second air outlet of the second pump body, the other end of the air supplementing channel in the front cover is communicated with one end of the air supplementing channel in the front cover, and the other end of the air supplementing channel in the front cover can be communicated with the first air supplementing opening.

In some embodiments, the first pump body includes a first stationary plate and a first movable plate, the first air supply port is disposed on the first stationary plate, the first movable plate and the first stationary plate enclose a first compression cavity and a second compression cavity, the first air supply port has at least 2, at least 1 of the first air supply ports are disposed in a configuration communicated with the first compression cavity, and at least 1 of the first air supply ports are disposed in a configuration communicated with the second compression cavity.

In some embodiments, the air supply device further comprises a connecting plate, wherein the connecting plate is arranged at a position between the front cover and the first static disc, a first through hole is further formed in the connecting plate, one end of the first through hole can be communicated with the other end of the air supply channel in the front cover, and the other end of the first through hole is communicated with the first air supply port.

In some embodiments, a first valve plate and a first valve plate baffle are arranged at the other end of the air supplementing channel in the front cover; a sealing structure is further arranged between the front cover and the connecting plate; the connecting plate comprises a connecting body and a first protruding portion, wherein the connecting body is of a plate-shaped structure and is connected with the sealing structure, the first protruding portion is arranged on the end face of the connecting body, facing the first static disc, of one side of the first static disc and protrudes outwards, a first groove is formed in the first static disc, the first protruding portion is in plug-in connection with the first groove, one end of the first air supplementing port is communicated with the first compression cavity or the second compression cavity, and the other end of the first air supplementing port is communicated with the first through hole through the first groove.

In some embodiments, the first static plate is further provided with a second air compensating port, and the second air compensating port can also introduce air from the outside of the compressor to supplement air to the first pump body, and the second air compensating port has at least 2, wherein at least 1 second air compensating port is arranged at a position communicated with the first compression cavity, and at least 1 second air compensating port is arranged at a position communicated with the second compression cavity.

In some embodiments, when the air supplementing compressor further comprises a front cover, a front cover external air supplementing channel is further arranged in the front cover, one end of the front cover external air supplementing channel can introduce air from the outside of the compressor, and the other end of the front cover external air supplementing channel can be communicated with the second air supplementing port; the other end of the front cover outer air supplementing channel is provided with a second valve plate and a second valve plate baffle.

In some embodiments, when the air supplementing compressor further includes a connection plate, a second through hole is further provided in the connection plate, one end of the second through hole can be communicated with the other end of the front cover external air supplementing channel, and the other end of the second through hole is communicated with the second air supplementing port.

In some embodiments, when the connecting plate includes a connecting body, the connecting plate further includes a second protruding portion, the second protruding portion is disposed on an end face of the connecting body facing one side of the first static disc and protrudes outwards, a second groove is disposed on the first static disc, the second protruding portion is in plug-in fit with the second groove, one end of the second air supplementing port is communicated with the first compression cavity or the second compression cavity, and the other end of the second air supplementing port is communicated with the second through hole through the second groove.

In some embodiments, the second pump body includes a second static disc, a second movable disc and a second static disc cover plate, the second exhaust port is arranged on the second static disc, a medium-pressure exhaust cavity is enclosed between the second static disc cover plate and the second static disc, a second internal air supplementing channel is further arranged in the second static disc, one end of the medium-pressure exhaust cavity is communicated with the second exhaust port, the other end of the medium-pressure exhaust cavity is communicated with one end of the second internal air supplementing channel, and the other end of the second internal air supplementing channel is communicated with one end of the internal air supplementing channel.

In some embodiments, the engine further comprises a crankshaft, the first pump body and the second pump body are driven by the crankshaft, and the first movable disc and the second movable disc are sleeved on the crankshaft and can be driven by the crankshaft to rotate;

a second exhaust valve plate and a second exhaust baffle are arranged at the second exhaust port; the first exhaust port is provided with a first exhaust valve plate and a first exhaust baffle plate.

In some embodiments, the second fixed disk includes a plurality of second fixed disk scroll wraps, the second movable disk includes a plurality of second movable disk scroll wraps, the second fixed disk scroll wraps and the second movable disk scroll wraps are in one-to-one correspondence to form a plurality of third compression chambers, the second exhaust port also includes a plurality of second exhaust ports, and each third compression chamber is provided with one second exhaust port in one-to-one correspondence.

In some embodiments, the second pump body includes a centrifugal turbine, an upper cover plate and a lower support structure, the centrifugal turbine is disposed between the upper cover plate and the lower support structure, the air supply compressor further includes a crankshaft, the first movable disk and the centrifugal turbine are both sleeved on the crankshaft and can be driven by the crankshaft to rotate for compression, the second air suction port is disposed on the lower support structure and is used for air intake along the axial direction, and the second air discharge port is disposed on the radial outer side of the centrifugal turbine and is disposed on the lower support structure and is used for air discharge along the radial direction.

The utility model also provides an air conditioner comprising the air compressor of any one of the previous claims.

In some embodiments, when the first pump body includes a first static plate, and a second air-compensating port is provided on the first static plate, the air conditioner further includes an evaporator, a condenser, and a throttling device, and the second air-compensating port is capable of introducing refrigerant gas from the condenser outlet.

The air-filling compressor and the air conditioner provided by the utility model have the following beneficial effects:

1. according to the utility model, two pump body structures are arranged in the compressor, the air suction ports of the first pump body and the second pump body are used for sucking air from the air suction cavity normally, the second air outlet of the second pump body is used for guiding compressed air into the first air supplementing port of the first pump body so as to effectively supplement air to the first pump body, the second pump body is used for effectively compressing and pressurizing the air suction, and the first pump body compression cavity is supplemented with air, so that the air suction mass flow of the first pump body can be effectively improved, the total air suction mass flow of the compressor is further improved, the compressor can be operated at a higher efficiency speed, meanwhile, the compression cavity pressure of the initial stage of the main dynamic and static disc is improved, the compression ratio is reduced, the under-pressure shrinkage condition of the main dynamic and static disc is improved, and the efficiency and the reliability of the compressor are further improved; the utility model can realize effective pressurization and air supplement of air suction without increasing radial size, improve air suction mass flow, improve refrigeration/heating quantity, enable the compressor to run at a high-efficiency rotating speed, reduce the compression ratio of the main dynamic disc and the static disc and improve the efficiency and reliability of the compressor.

2. According to the utility model, through the arrangement of the second air supplementing port on the first pump body, the refrigerant gas can be introduced from the outside of the compressor through the second air supplementing port, so that the air supplementing quantity of the first pump body can be further improved, and particularly, the air intake mass flow rate of the low-temperature heat pump in operation is improved, the refrigerating/heating quantity is improved, and the efficiency and reliability of the compressor are further improved; the utility model also discloses a structure that the second pump body and the first pump body are sleeved on the crankshafts, and the first pump body and the second pump body can be driven to perform compression action through one crankshaft, so that components are further saved, the space is reduced, the structure is more compact, the air suction amount of the compressor is improved, and the refrigerating/heating efficiency of the compressor is improved.

Drawings

FIG. 1 is a front cross-sectional view of a compressor in the background art;

fig. 2 is an external structural view of a compressor in the related art;

FIG. 3 is a top view of the first stationary plate position of the air compressor of the present utility model;

FIG. 4 is a schematic cross-sectional view of an embodiment corresponding to D-D of FIG. 3;

FIG. 4a is an enlarged partial view of portion A of FIG. 4;

FIG. 5 is a schematic cross-sectional view of an embodiment corresponding to E-E of FIG. 3;

FIG. 5a is an enlarged partial view of portion B of FIG. 5;

FIG. 6 is a schematic cross-sectional view of an embodiment corresponding to F-F of FIG. 3;

FIG. 6a is an enlarged partial view of portion D of FIG. 6;

FIG. 7 is a top view (without a connecting plate) at the front cover assembly of the air compressor of the present utility model;

FIG. 8 is a top view (with a connecting plate) at the front cover assembly of the air compressor of the present utility model;

FIG. 9 is a cross-sectional view of a second stationary plate of a first embodiment of the air compressor of the present utility model;

FIG. 10 is a schematic cross-sectional view of embodiment II corresponding to D-D of FIG. 3;

FIG. 10a is an enlarged partial view of portion C of FIG. 10;

FIG. 11 is a schematic structural view of the centrifugal turbine of FIG. 10;

FIG. 12 is a schematic view of the centrifugal turbine of FIG. 10 assembled with a lower support structure.

The reference numerals are expressed as:

1. a housing; 10. an air suction cavity; 11. an air supplementing channel in the shell; 2. a first pump body; 21. a first air suction port; 22. a first exhaust port; 23. a first air supply port; 24. a second air supply port; 25. a first stationary plate; 26. a first movable plate; 27. a first groove; 28. a second groove; 29. a first exhaust valve sheet; 210. a first exhaust baffle; 211. a mounting hole; 3. a second pump body; 31. a second air suction port; 32. a second exhaust port; 33. a second stationary plate; 331. the second fixed disc vortex tooth; 34. a second movable plate; 341. a second movable disk scroll wrap; 35. a second stationary platen cover; 36. a medium pressure exhaust chamber; 37. a second static disc internal air supplementing channel; 38. a second exhaust valve sheet; 39. a second exhaust baffle; 310. a centrifugal turbine; 311. an upper cover plate; 312. a lower support structure; 4. a front cover; 41. an air supplementing channel in the front cover; 42. a first valve plate; 43. a first valve plate baffle; 44. the front cover is provided with an external air supplementing channel; 45. a second valve plate; 46. a second valve plate baffle; 47. air compensating valve baffle plate screws; 5. a connecting plate; 51. a first through hole; 52. a connecting body; 53. a first projection; 54. a second through hole; 55. a second projection; 56. an air supplementing sealing ring; 6. a sealing structure; 7. a crankshaft; 81. a main support; 82. and a second bracket.

Detailed Description

As shown in fig. 3-12, the present utility model provides a gas-filling compressor comprising:

the device comprises a shell 1, a first pump body 2 and a second pump body 3, wherein the first pump body 2 and the second pump body 3 are arranged inside the shell 1, and an air suction cavity 10 is formed inside the shell 1; the first pump body 2 is provided with a first air suction port 21, a first air exhaust port 22 and a first air supplementing port 23, the second pump body 3 is provided with a second air suction port 31 and a second air exhaust port 32, and the first air suction port 21 and the second air suction port 31 are communicated with the air suction cavity 10 for air suction; the second exhaust port 32 can communicate with the first air supply port 23, so that the compressed air in the second pump body 3 can be supplied from the first air supply port 23 into the first pump body 2.

According to the utility model, two pump body structures are arranged in the compressor, the air suction ports of the first pump body and the second pump body are used for sucking air from the air suction cavity normally, the second air outlet of the second pump body is used for guiding compressed air into the first air supplementing port of the first pump body so as to effectively supplement air to the first pump body, the second pump body is used for effectively compressing and pressurizing the air suction, and the first pump body compression cavity is supplemented with air, so that the air suction mass flow of the first pump body can be effectively improved, the total air suction mass flow of the compressor is further improved, the compressor can be operated at a higher efficiency speed, meanwhile, the compression cavity pressure of the initial stage of the main dynamic and static disc is improved, the compression ratio is reduced, the under-pressure shrinkage condition of the main dynamic and static disc is improved, and the efficiency and the reliability of the compressor are further improved; the utility model can realize effective pressurization and air supplement of air suction without increasing radial size, improve air suction mass flow, improve refrigeration/heating quantity, enable the compressor to run at a high-efficiency rotating speed, reduce the compression ratio of the main dynamic disc and the static disc and improve the efficiency and reliability of the compressor. Compared with the prior art, the utility model can greatly improve the air suction amount of the first pump body and improve the refrigerating capacity and the refrigerating efficiency.

In some embodiments, the air-supplementing device further comprises a front cover 4, the air-supplementing channel 11 in the housing is arranged in the housing 1, the air-supplementing channel 41 in the front cover is arranged in the housing 4, one end of the air-supplementing channel 11 in the housing can be communicated with the second air outlet 32 of the second pump body 3, the other end of the air-supplementing channel 41 in the front cover can be communicated with one end of the air-supplementing channel 41 in the front cover, and the other end of the air-supplementing channel 41 in the front cover can be communicated with the first air-supplementing port 23. The utility model is in a preferable structural form, the compressed gas can be absorbed from the second pump body through the internal air supplementing channel of the shell arranged in the shell, so that the internal air supplementing is conveyed into the compression cavity of the first pump body through the internal air supplementing channel of the front cover arranged in the front cover, the air supplementing in the compression cavity is finished, the compressed gas of the second pump body is not communicated with the air suction cavity in the shell, and the effect that the pressure can act on the first pump body to improve the air suction amount of the first pump body is effectively ensured.

The utility model provides a double-air-supplementing vortex compressor structure, which can realize effective pressurization and air supplementation of air suction under the condition of not increasing the radial size, improve the air suction mass flow, especially improve the problem of low air suction mass flow of a low-temperature heat pump, improve the refrigerating/heating quantity, enable the compressor to run at a high-efficiency rotating speed, reduce the compression ratio of a main dynamic disc and a static disc and improve the efficiency and the reliability of the compressor.

Can solve the following technical problems:

1. the air suction mass flow of the compressor is improved, and particularly, the problem of low air suction mass flow when the low-temperature heat pump is used is solved;

2. the refrigerating/heating capacity is improved, the running rotating speed of the compressor is reduced, and the reliability is improved;

3. the effective air suction and pressurization are realized, and the compression ratio of the main dynamic disk and the static disk is reduced.

The utility model aims at keeping the air suction of the main dynamic and static disc, simultaneously carrying out internal drainage air supplement on the compression cavity of the main dynamic and static disc, realizing effective compression pressurization on the air suction through the second dynamic and static disc, and supplementing air to the compression cavity of the main dynamic and static disc, thereby improving the air suction mass flow, enabling the compressor to operate at a high-efficiency rotating speed, simultaneously improving the compression cavity pressure of the initial stage of the main dynamic and static disc, reducing the compression ratio, improving the under-pressure shrinkage condition of the main dynamic and static disc, and further improving the efficiency and reliability of the compressor. Compared with the traditional integrated two-stage compressor, the utility model can improve the suction mass flow in a relatively smaller size space, reduce the compression ratio to a certain extent and has better adaptability under the condition of larger refrigeration/heating capacity requirement.

In some embodiments, the first pump body 2 includes a first static disc 25 and a first movable disc 26, the first air compensating port 23 is disposed on the first static disc 25, the first movable disc 26 and the first static disc 25 enclose a first compression cavity and a second compression cavity, the first air compensating port 23 has at least 2, at least 1 first air compensating port 23 is disposed in a configuration in communication with the first compression cavity, and at least 1 first air compensating port 23 is disposed in a configuration in communication with the second compression cavity. The first pump body preferably comprises a first static disc and a first movable disc, compression of the two crescent cavities can be carried out in the first compression cavity and the second compression cavity through relative movement of the first static disc and the first movable disc, and the air suction quantity of the two compression cavities can be effectively improved through the first air supply ports communicated with the two compression cavities, and the refrigerating capacity and the refrigerating effect of the two compression cavities are improved.

In some embodiments, the air supply device further comprises a connecting plate 5, the connecting plate 5 is arranged at a position between the front cover 4 and the first static disc 25, a first through hole 51 is further arranged in the connecting plate 5, one end of the first through hole 51 can be communicated with the other end of the air supply channel 41 in the front cover, and the other end of the first through hole 51 is communicated with the first air supply port 23. The utility model also enables the air supplementing channel in the front cover to be communicated to the first air supplementing port on the first static disc through the first through hole formed in the connecting plate, thereby realizing the effect and the effect of air supplementing and conducting, and further effectively ensuring the sealing effect.

In some embodiments, the other end of the air supplementing channel 41 in the front cover is provided with a first valve plate 42 and a first valve plate baffle 43; a sealing structure 6 is also arranged between the front cover 4 and the connecting plate 5; the connecting plate 5 comprises a connecting body 52 and a first protruding portion 53, the connecting body 52 is of a plate-shaped structure and is connected with the sealing structure 6, the first protruding portion 53 is arranged on the end face, facing one side of the first static disc 25, of the connecting body 52 and protrudes outwards, a first groove 27 is formed in the first static disc 25, the first protruding portion 53 is in plug-in fit with the first groove 27, one end of the first air supplementing port 23 is communicated with the first compression cavity or the second compression cavity, and the other end of the first air supplementing port is communicated with the first through hole 51 through the first groove 27. According to the utility model, the first valve plate and the first valve plate baffle plate are arranged at the air supplementing channel in the front cover, so that the air exhausted from the air supplementing channel in the front cover can be controlled, and the air in the first static disc is effectively prevented from flowing back into the air supplementing channel in the front cover to influence the compression performance; the sealing structure arranged between the front cover and the connecting plate can effectively ensure the sealing effect between the gas outlet end of the gas supplementing channel in the front cover and the connecting plate, and prevent the gas supplementing gas from leaking from the gap, thereby ensuring the effect of supplementing gas; the utility model also realizes the effective connection between the connecting plate and the first static disc through the concave-convex matched structure form by the first protruding part arranged on the connecting main body and the first groove on the first static disc, and ensures the normal and effective air supplementing process.

In some embodiments, the first static plate 25 is further provided with a second air compensating port 24, and the second air compensating port 24 can also introduce air from the outside of the compressor to supplement air to the first pump body 2, where at least 2 second air compensating ports 24 are provided, at least 1 second air compensating port 24 is provided at a position communicating with the first compression chamber, and at least 1 second air compensating port 24 is provided at a position communicating with the second compression chamber. The utility model also can further improve the air supplementing quantity of the first pump body by arranging the second air supplementing port on the first pump body and introducing the refrigerant gas from the outside of the compressor through the second air supplementing port, especially the air intake mass flow rate of the low-temperature heat pump in operation is improved, the refrigerating/heating quantity is improved, and the efficiency and the reliability of the compressor are further improved.

The utility model provides a double-air-supplementing vortex-spinning compressor structure.

1. Two air supplementing modes of internal and external sources can be realized by arranging two pairs of air supplementing holes on the static disc;

2. by adopting an effective medium-pressure compression mechanism, effective compression pressurization and air supplement of air suction are realized;

3. the air supplementing channel and the adjusting mechanism are arranged in a matched manner aiming at the double air supplementing static disc, so that air supplementing control is realized.

The utility model provides a double-air-supplementing vortex-spinning compressor which is realized by a double-air-supplementing static disc, a medium-pressure compression structure and an air-supplementing channel.

As shown in fig. 3 and 4, the main static disc is provided with an inner pair of air supplementing holes and an outer pair of air supplementing holes; mounting holes are formed in the positions of the air supplementing holes; the refrigerant on the suction side can directly reach the suction side of the main static disc through a through hole (not shown), and the main static disc completes initial suction before air supplement.

In some embodiments, when the air-supplementing compressor further includes a front cover 4, a front cover external air-supplementing channel 44 is further provided inside the front cover 4, one end of the front cover external air-supplementing channel 44 can introduce air from the outside of the compressor, and the other end can be communicated with the second air-supplementing port 24; the other end of the front cover outer air supplementing channel 44 is provided with a second valve plate 45 and a second valve plate baffle 46. The utility model also discloses a front cover outer air supplementing channel arranged on the front cover, which can introduce and conduct the air outside the compressor into the compression cavity of the first pump body, so that the outer air supplementing effect of the first pump body through the second air supplementing port is realized, the outer air supplementing and the inner air supplementing act together, the air supplementing effect of the first pump body is further improved, the air suction amount of the first pump body is increased, and the compression efficiency is improved.

In some embodiments, when the air compressor further includes the connection plate 5, a second through hole 54 is further disposed in the connection plate 5, one end of the second through hole 54 can be communicated with the other end of the front cover outer air compensating channel 44, and the other end of the second through hole 54 is communicated with the second air compensating port 24. The second through hole formed in the connecting plate can be communicated with the front cover outer air supplementing channel so as to perform outer air supplementing effect on the second air supplementing opening.

In some embodiments, when the connection plate 5 includes the connection body 52, the connection plate 5 further includes a second protruding portion 55, where the second protruding portion 55 is disposed on an end surface of the connection body 52 facing one side of the first static disc 25 and protrudes outwards, the first static disc 25 is provided with a second groove 28, the second protruding portion 55 is in plug-in fit with the second groove 28, one end of the second air compensating port 24 is communicated with the first compression cavity or the second compression cavity, and the other end is communicated with the second through hole 54 through the second groove 28. The utility model also realizes the effective connection between the connecting plate and the first static disc through the concave-convex matched structure form by connecting the second protruding part arranged on the main body and the second groove on the first static disc, and ensures the normal and effective operation of the external air supplementing process.

As shown in fig. 4-8, two pairs of air-filling holes are connected by an air-filling connecting plate, and a cylinder of the air-filling connecting plate is provided with a through hole to realize the communication with the air-filling holes of the static disc; the air supplementing connecting plate is sleeved on the static disc mounting hole in a cylindrical manner, and an air supplementing sealing ring is arranged between the air supplementing connecting plate and the static disc mounting hole to realize the sealing of the air supplementing connecting plate and the static disc mounting hole; the air supplementing connecting plate is matched with the front cover, a sealing gasket is arranged between the front cover and the air supplementing connecting plate, and sealing connection is realized through the sealing gasket or the sealing ring; the front cover is internally provided with an inner air supplementing channel and an outer air supplementing channel which are separated from each other; the outlet of the air supplementing channel is provided with a one-way valve component which consists of a valve plate, a baffle plate and a screw, and the one-way valve component can be directly arranged; the one-way valve component can prevent the gas in the compression cavity from flowing backwards to the gas supplementing channel; the above parts are assembled together to form the front cover assembly.

The front cover inner air supplementing channel is communicated with the inner air supplementing channel formed in the shell, and then is communicated with the medium-pressure compression mechanism, so that inner air supplementing transmission is realized.

The internal air supplementing means that the air suction refrigerant is compressed into medium-pressure air through the medium-pressure compression mechanism, and is conveyed into the main dynamic and static disc compression cavity through a channel arranged in the shell; the external air supplementing means that the refrigerant which is led and throttled from the condenser is conveyed into the main dynamic and static disc compression cavity through the arranged external air supplementing channel.

In some embodiments, the second pump body 3 includes a second static disc 33, a second movable disc 34, and a second static disc cover plate 35, the second exhaust port 32 is disposed on the second static disc 33, a medium-pressure exhaust cavity 36 is enclosed between the second static disc cover plate 35 and the second static disc 33, a second internal air-supplementing channel 37 is further disposed in the second static disc 33, one end of the medium-pressure exhaust cavity 36 is communicated with the second exhaust port 32, the other end is communicated with one end of the second internal air-supplementing channel 37, and the other end of the second internal air-supplementing channel 37 is communicated with one end of the internal air-supplementing channel 11. The air compressor is a preferred structural form of the embodiment 1 of the second pump body, namely, the compression of air is realized through the cooperation of the second static disc and the movable disc, and the silencing effect can be realized through the medium-pressure exhaust cavity, so that the air compressed by the second pump body can be effectively supplemented to the first pump body through the inner air supplementing channels of the shell and the front cover, the air suction amount of the first pump body is improved, and the compression refrigeration efficiency of the first pump body is improved.

As shown in fig. 9, the medium-pressure compression structure of the first embodiment is implemented by a second movable disk and a second static disk, and a plurality of vortex teeth are arranged on the movable disk and the static disk, and the vortex teeth are a section for selecting a corrected initial section; the second movable and static plates are matched to form a plurality of compression cavities, and an exhaust valve plate is arranged on the second static plate corresponding to the exhaust port of each compression cavity, so that the air suction, compression and exhaust of the refrigerant are realized; the second static disc cover plate and the second static disc are matched to form a medium-pressure closed exhaust cavity, and the gas in the medium-pressure exhaust cavity flows to the main static disc compression cavity through the gas supplementing channel, so that the internal gas supplementing of the main static disc compression cavity is realized; a medium pressure relief valve (not shown) is arranged in the medium pressure exhaust cavity, and when the medium pressure is overlarge, the medium pressure is relieved to the suction side of the compressor for exhausting; by designing the size of the second movable and static disc and the vortex teeth, the air supplementing amount in a wider range can be set.

In some embodiments, the pump further comprises a crankshaft 7, the first pump body 2 and the second pump body 3 are driven by the crankshaft 7, and the first movable disk 26 and the second movable disk 34 are sleeved on the crankshaft 7 and can be driven to rotate by the crankshaft 7;

a second exhaust valve plate 38 and a second exhaust baffle 39 are arranged at the second exhaust port 32; the first exhaust port 22 is provided with a first exhaust valve plate 29 and a first exhaust baffle 210.

The utility model also discloses a structure that the second pump body and the first pump body are sleeved on the crankshafts, and the first pump body and the second pump body can be driven to perform compression action through one crankshaft, so that components are further saved, the space is reduced, the structure is more compact, the air suction amount of the compressor is improved, and the refrigerating/heating efficiency of the compressor is improved.

In some embodiments, the second fixed disk 33 includes a plurality of second fixed disk scroll wraps 331, the second movable disk 34 includes a plurality of second movable disk scroll wraps 341, the second fixed disk scroll wraps 331 and the second movable disk scroll wraps 341 are in one-to-one correspondence to form a plurality of third compression chambers, and the second exhaust ports 32 also have a plurality of second exhaust ports 32, and each third compression chamber is provided with one second exhaust port 32 in one-to-one correspondence. The second static disc and the second movable disc are in a further preferable structural form, and a plurality of third compression cavities can be formed through one-to-one matching action of the plurality of second static disc vortex teeth and the plurality of second movable disc vortex teeth, so that the compression amount is further improved, the air supplementing effect on the first pump body is improved, and the air suction amount of the first pump body is improved.

In some embodiments, the second pump body 3 includes a centrifugal turbine 310, an upper cover plate 311, and a lower support structure 312, the centrifugal turbine 310 is disposed between the upper cover plate 311 and the lower support structure 312, the air supplementing compressor further includes a crankshaft 7, the first movable disk 26 and the centrifugal turbine 310 are both sleeved on the crankshaft 7 and can be driven to rotate by the crankshaft 7 to compress, the second air intake port 31 is disposed on the lower support structure 312, air is axially taken in, and the second air exhaust port 32 is located radially outside the centrifugal turbine 310 and is located on the lower support structure 312, and is radially exhausted. In the preferred structural form of embodiment 2 of the present utility model, the gas can be compressed by the centrifugal turbine, so that the compressed gas is supplied to the first pump body, and the suction amount of the first pump body is greatly improved, so that the compression refrigeration amount of the whole compressor is improved, and the compression refrigeration efficiency is improved.

As shown in fig. 10 to 12, the intermediate pressure compression mechanism may be configured as a centrifugal turbine structure to realize supercharging and air supply to intake air, and is provided with a lower support, a centrifugal turbine, and an upper cover plate. The upper cover plate, the centrifugal turbine and the lower support are assembled to form a relative sealing space; the lower support is provided with an air inlet, the refrigerant enters the centrifugal turbine through the air inlet and is centrifugally thrown out by the turbine acceleration to realize supercharging, and the thrown out refrigerant flows to the main dynamic and static disc through the air supplementing channel to supplement air in the compression cavity of the main dynamic and static disc, so that supercharging air supplementing is realized.

The utility model also provides an air conditioner comprising the air compressor of any one of the previous claims.

The utility model aims at keeping the air suction of the main dynamic and static disc, simultaneously carrying out internal drainage air supplement on the compression cavity of the main dynamic and static disc, realizing effective compression pressurization on the air suction through the second dynamic and static disc, and supplementing air to the compression cavity of the main dynamic and static disc, thereby improving the air suction mass flow, enabling the compressor to operate at a high-efficiency rotating speed, simultaneously improving the compression cavity pressure of the initial stage of the main dynamic and static disc, reducing the compression ratio, improving the under-pressure shrinkage condition of the main dynamic and static disc, and further improving the efficiency and reliability of the compressor.

Compared with a two-stage compressor which completely throttles, drains and supplements air from a condenser, as shown in patent CN110285060A, compared with a common two-stage compressor, the utility model can realize larger-scale improvement of the air suction mass flow by using a relatively simpler and smaller structure, and the supplementing air refrigerant is sourced from an evaporator (namely a compressor air suction cavity), so that the improvement of the refrigerating capacity is more effective.

Compared with the traditional integrated two-stage compressor, the utility model can improve the suction mass flow in a relatively smaller size space, reduce the compression ratio to a certain extent and has better adaptability under the condition of larger refrigeration/heating capacity requirement.

In some embodiments, when the first pump body 2 includes a first static plate 25, and the second air-compensating port 24 is provided on the first static plate 25, the air conditioner further includes an evaporator, a condenser, and a throttling device, and the second air-compensating port 24 can introduce refrigerant gas from the outlet of the condenser. The utility model realizes the effect of introducing external air supply and air supply by communicating the second air supply port with the condenser outlet, can work together with the first air supply (the air supply of the second pump body to the first pump body), can further improve the air supply quantity to the first pump body, especially improve the air suction quality flow of the low temperature heat pump operation, improve the refrigerating/heating quantity and further improve the efficiency and reliability of the compressor aiming at the problem of low air suction quality flow of the low temperature heat pump operation.

The utility model also provides a control method of the air conditioner, which comprises the following steps:

judging, namely judging that the operation working condition is a normal operation working condition or a low-temperature heating working condition;

a control step, when the operation condition is a normal operation condition, only opening the first air supplementing port to supplement air for the first pump body, and closing the second air supplementing port to operate in a single internal air supplementing mode; when the operation condition is a low-temperature heating condition (the low temperature refers to outdoor temperature lower than preset temperature), the first air supplementing port and the second air supplementing port are simultaneously opened, and the air supplementing device is operated in an internal and external air supplementing mode.

The internal air supplementing and the internal and external air supplementing operation modes correspond to the conventional working condition and the low-temperature heating working condition, so that the air suction quantity of the compressor can be improved through the internal air supplementing under the conventional working condition, and the refrigeration compression efficiency of the compressor can be improved; the air suction amount of the compressor is improved through the combination of the internal and external air supplement under the low-temperature heating working condition, and the refrigeration compression efficiency of the compressor is improved; and finally, the refrigerating capacity and the efficiency of the compressor can be improved.

An inner air supplementing channel and an outer air supplementing channel are arranged in the front cover, the outer air supplementing channel is communicated with an outer medium-pressure refrigerant which is drained and throttled by the pipeline and the condenser, and the compressor can operate in two modes: 1. and 2, single internal air supplementing operation and 2, internal and external air supplementing mode operation. During normal refrigeration working conditions, the outer air supplementing channel is closed, and the air conditioner operates in a single inner air supplementing mode; and the air-supplementing mode is used for simultaneously supplementing air inside and outside under the low-temperature heating working condition.

The refrigerating condition is mainly to refrigerate, at this moment, the drainage and the air supply from the condenser do not help the lifting of the refrigerating capacity, and because the refrigerating capacity is mainly generated from the air suction capacity of the evaporator, the refrigerating capacity can be lifted only by lifting the low-pressure air suction capacity, the external air supply is closed at this moment, and the internal air supply is opened;

when the low-temperature heating working condition is adopted, the two air supplements are opened, the heating quantity generates the exhaust flow from the driving static disc, and obviously, the internal and external air supplements can improve the exhaust flow, so that the two air supplements are opened.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model. The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (15)

1. A gas compressor, characterized in that: comprising the following steps:

the novel air suction device comprises a shell (1), a first pump body (2) and a second pump body (3), wherein the first pump body (2) and the second pump body (3) are arranged inside the shell (1), and an air suction cavity (10) is formed inside the shell (1); the first pump body (2) is provided with a first air suction port (21), a first air exhaust port (22) and a first air supplementing port (23), the second pump body (3) is provided with a second air suction port (31) and a second air exhaust port (32), and the first air suction port (21) and the second air suction port (31) are communicated with the air suction cavity (10) for air suction; the second exhaust port (32) can be communicated with the first air supplementing port (23), so that compressed air in the second pump body (3) can be supplemented into the first pump body (2) from the first air supplementing port (23).

2. The air compressor of claim 1, wherein:

still include protecgulum (4), the inside of casing (1) is provided with in the casing air make-up passageway (11), the inside of protecgulum (4) is provided with in the protecgulum air make-up passageway (41), in the casing one end of air make-up passageway (11) can with second gas vent (32) intercommunication of second pump body (3), the other end with in the protecgulum one end intercommunication of air make-up passageway (41), in the protecgulum the other end of air make-up passageway (41) can with first air make-up mouth (23) intercommunication.

3. The air compressor of claim 2, wherein:

the first pump body (2) comprises a first static disc (25) and a first movable disc (26), the first air supplementing opening (23) is arranged on the first static disc (25), the first movable disc (26) and the first static disc (25) enclose a first compression cavity and a second compression cavity, the number of the first air supplementing openings (23) is at least 2, at least 1 first air supplementing opening (23) is arranged in the arrangement communicated with the first compression cavity, and at least 1 first air supplementing opening (23) is arranged in the arrangement communicated with the second compression cavity.

4. A gas compressor according to claim 3, characterized in that:

still include connecting plate (5), connecting plate (5) set up in protecgulum (4) with the position between first quiet dish (25), the inside of connecting plate (5) still is provided with first through-hole (51), the one end of first through-hole (51) can with the other end intercommunication of moisturizing passageway (41) in the protecgulum, the other end of first through-hole (51) with first moisturizing mouth (23) intercommunication.

5. The air compressor of claim 4, wherein:

a first valve plate (42) and a first valve plate baffle plate (43) are arranged at the other end of the air supplementing channel (41) in the front cover; a sealing structure (6) is further arranged between the front cover (4) and the connecting plate (5); the connecting plate (5) comprises a connecting main body (52) and a first protruding portion (53), the connecting main body (52) is of a plate-shaped structure and is connected with the sealing structure (6), the first protruding portion (53) is arranged on the end face of the connecting main body (52) facing one side of the first static disc (25) and protrudes outwards, a first groove (27) is formed in the first static disc (25), the first protruding portion (53) is in plug-in fit with the first groove (27), one end of the first air compensating port (23) is communicated with the first compression cavity or the second compression cavity, and the other end of the first protruding portion (53) is communicated with the first through hole (51) through the first groove (27).

6. The air compressor of any one of claims 3-5, wherein:

the first static disc (25) is further provided with second air supplementing openings (24), the second air supplementing openings (24) can be used for introducing air from the outside of the compressor to supplement air for the first pump body (2), the number of the second air supplementing openings (24) is at least 2, at least 1 second air supplementing opening (24) is arranged at the position communicated with the first compression cavity, and at least 1 second air supplementing opening (24) is arranged at the position communicated with the second compression cavity.

7. The air compressor of claim 6, wherein:

when the air supply compressor further comprises a front cover (4), a front cover outer air supply channel (44) is further arranged in the front cover (4), one end of the front cover outer air supply channel (44) can introduce air from the outside of the compressor, and the other end of the front cover outer air supply channel can be communicated with the second air supply port (24); the other end of the front cover outer air supplementing channel (44) is provided with a second valve plate (45) and a second valve plate baffle (46).

8. The air compressor of claim 7, wherein:

when the air supply compressor further comprises a connecting plate (5), a second through hole (54) is further formed in the connecting plate (5), one end of the second through hole (54) can be communicated with the other end of the front cover outer air supply channel (44), and the other end of the second through hole (54) is communicated with the second air supply port (24).

9. The air compressor of claim 8, wherein:

when connecting plate (5) including connecting body (52), connecting plate (5) still include second bulge (55), second bulge (55) set up in connect the orientation of main body (52) on the terminal surface of first quiet dish (25) one side and outwards bulge, be provided with second recess (28) on first quiet dish (25), second bulge (55) with second recess (28) grafting cooperation, the one end of second air supplementing mouth (24) with first compression chamber or second compression chamber intercommunication, the other end passes through second recess (28) with second through-hole (54) intercommunication.

10. The air compressor of any one of claims 3-5, wherein:

the second pump body (3) comprises a second static disc (33), a second movable disc (34) and a second static disc cover plate (35), the second exhaust port (32) is arranged on the second static disc (33), an intermediate pressure exhaust cavity (36) is formed between the second static disc (33) and the second static disc cover plate (35), a second static disc internal air supplementing channel (37) is further arranged in the second static disc (33), one end of the intermediate pressure exhaust cavity (36) is communicated with the second exhaust port (32), the other end of the intermediate pressure exhaust cavity is communicated with one end of the second static disc internal air supplementing channel (37), and the other end of the second static disc internal air supplementing channel (37) is communicated with one end of the shell internal air supplementing channel (11).

11. The air compressor of claim 10, wherein:

the novel hydraulic pump further comprises a crankshaft (7), wherein the first pump body (2) and the second pump body (3) are driven by the crankshaft (7), and the first movable disc (26) and the second movable disc (34) are sleeved on the crankshaft (7) and can be driven by the crankshaft (7) to rotate;

a second exhaust valve plate (38) and a second exhaust baffle plate (39) are arranged at the second exhaust port (32); a first exhaust valve plate (29) and a first exhaust baffle plate (210) are arranged at the first exhaust port (22).

12. The air compressor of claim 10, wherein:

the second static disc (33) comprises a plurality of second static disc vortex teeth (331), the second movable disc (34) comprises a plurality of second movable disc vortex teeth (341), the second static disc vortex teeth (331) are matched with the second movable disc vortex teeth (341) in a one-to-one correspondence mode to form a plurality of third compression cavities, the second exhaust ports (32) are also provided in a plurality, and each third compression cavity is provided with one second exhaust port (32) in a one-to-one correspondence mode.

13. The air compressor of any one of claims 3-5, wherein:

the second pump body (3) comprises a centrifugal turbine (310), an upper cover plate (311) and a lower supporting structure (312), the centrifugal turbine (310) is arranged between the upper cover plate (311) and the lower supporting structure (312), the air supplementing compressor further comprises a crankshaft (7), the first movable disc (26) and the centrifugal turbine (310) are sleeved on the crankshaft (7) and can be driven by the crankshaft (7) to rotate for compression, the second air suction port (31) is arranged on the lower supporting structure (312) and is used for axially feeding air, and the second air exhaust port (32) is arranged on the radial outer side of the centrifugal turbine (310) and is arranged on the lower supporting structure (312) and is used for radially exhausting air.

14. An air conditioner, characterized in that: comprising a gas compressor according to any one of claims 1 to 13.

15. An air conditioner according to claim 14, wherein: when the first pump body (2) comprises a first static disc (25), and a second air supplementing port (24) is arranged on the first static disc (25), the air conditioner further comprises an evaporator, a condenser and a throttling device, and the second air supplementing port (24) can introduce refrigerant gas from an outlet of the condenser.

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