CN214036118U - Pump body assembly and fluid machine with same - Google Patents

Abstract

The utility model provides a pump body subassembly and have its fluid machinery. The pump body assembly comprises a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly, the first cylinder assembly comprises a first cylinder, and the first cylinder is provided with a first air inlet portion, a first inner cavity and a first slide sheet groove; the second cylinder subassembly includes the second cylinder, and the second cylinder has second air inlet portion, second inner chamber and second sliding vane groove, and pump body subassembly still includes: the partition plate is arranged between the first cylinder assembly and the second cylinder assembly and provided with a concave part, the concave part is communicated with the first inner cavity and the first slide sheet groove, and the concave part is positioned on one side, close to the first air inlet part, of the first slide sheet groove along the circumferential direction of the first cylinder; and/or the concave part is communicated with the second inner cavity and the second sliding sheet groove, and the concave part is positioned on one side, close to the second air inlet part, of the second sliding sheet groove along the circumferential direction of the second air cylinder. The utility model discloses the problem that pump body subassembly has the evacuation phenomenon in the process of breathing in among the prior art has been solved effectively.

Description

Pump body assembly and fluid machine with same

Technical Field

The utility model relates to a fluid machinery technical field particularly, relates to a pump body subassembly and have its fluid machinery.

Background

At present, a rolling rotor compressor is often applied to an air conditioning system, along with the upgrading of the energy efficiency of a new national standard and the improvement of the user experience requirement, the requirements of users on the energy efficiency and the noise of the compressor and the air conditioning system are higher and higher, and the effect improvement and noise reduction are always the main research directions of the rolling rotor compressor. In particular, a rolling rotor compressor generally employs the following three suction structures: 1. the cylinder air suction hole and the communicating hole of the cylinder inner cavity are circular holes; 2. the air suction hole of the air cylinder is communicated with the inner cavity of the air cylinder through a U-shaped groove; 3. the cylinder suction hole and the communicating hole of the cylinder inner cavity are circular holes and have chamfer structures. Wherein, in order to guarantee the rigidity in cylinder suction hole position department, need reserve certain wall thickness between cylinder suction hole and slide groove.

However, in the process of air suction of the cylinder, the phenomenon of air suction and vacuum pumping exists, so that the ineffective power consumption of the compressor is increased, the oil film between the sliding vane and the sliding vane groove of the cylinder is failed, and the pressure difference between the vacuum cavity and the sliding vane groove is increased to generate internal leakage. In addition, when the vacuum cavity of the cylinder is communicated with the air suction hole, the air suction is locally expanded instantly to generate noise, and the hearing of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a pump body subassembly and have its fluid machinery to pump body subassembly has the problem of evacuation phenomenon in the process of breathing in among the solution prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a pump body assembly, comprising a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly, the first cylinder assembly comprising a first cylinder, the first cylinder having a first air inlet portion, a first inner cavity and a first slide groove, both the first air inlet portion and the first slide groove communicating with the first inner cavity; the second cylinder subassembly includes the second cylinder, and the second cylinder has second air inlet portion, second inner chamber and second sliding vane groove, and second air inlet portion and second sliding vane groove all communicate with the second inner chamber, and pump body subassembly still includes: the partition plate is arranged between the first cylinder assembly and the second cylinder assembly and provided with a concave part, the concave part is communicated with the first inner cavity and the first slide sheet groove, and the concave part is positioned on one side, close to the first air inlet part, of the first slide sheet groove along the circumferential direction of the first cylinder; and/or the concave part is communicated with the second inner cavity and the second sliding sheet groove, and the concave part is positioned on one side, close to the second air inlet part, of the second sliding sheet groove along the circumferential direction of the second air cylinder.

Further, the recess communicates with the first air intake portion; and/or the recess communicates with the second air intake portion.

Further, the recess is the recess, and the recess is two, and two recesses are located the up end and the lower terminal surface of baffle respectively.

Further, the recess is a through hole.

Further, the separator also has a communication hole that communicates with both the first intake portion and the second intake portion.

Further, the communication hole and the recess are provided independently of each other.

Further, the partition plate further includes a communicating portion through which the communicating hole communicates with the concave portion; wherein the communicating part is a communicating cavity; alternatively, the communication portion is a through hole.

Further, the pump body assembly still includes: the upper flange is arranged above the first cylinder assembly, a first groove is formed in the lower end face of the upper flange, and the first groove is communicated with the first air inlet portion and the first slide sheet groove.

Further, the pump body assembly still includes: and the lower flange is arranged below the second air cylinder assembly, a second groove is formed in the upper end face of the lower flange, and the second groove is communicated with the second air inlet part and the second sliding sheet groove.

Further, the first air inlet part comprises a first sub air inlet part and a second sub air inlet part communicated with the first sub air inlet part, and the first sub air inlet part is communicated with the first inner cavity through the second sub air inlet part; the first sub air inlet part is a first radial hole, and the second sub air inlet part is a U-shaped notch or a second radial hole.

Furthermore, the first air inlet part also comprises a first air inlet hole, the second sub air inlet part is a second radial hole, and the concave part or the communication hole is communicated with the second radial hole through the first air inlet hole; wherein, the first air inlet is an axial through hole.

Furthermore, the number of the first sub air inlet parts is at least two, the first air inlet part further comprises a fifth sub air inlet part and a first communicating groove, and the fifth sub air inlet part is communicated with the second sub air inlet part through the first communicating groove; the second sub air inlet part is a U-shaped notch, and the fifth sub air inlet part is an axial through hole.

Further, the second air inlet part comprises a third sub air inlet part and a fourth sub air inlet part communicated with the third sub air inlet part, and the third sub air inlet part is communicated with the second inner cavity through the fourth sub air inlet part; the third sub air inlet part is a third radial hole, and the fourth sub air inlet part is a U-shaped notch or a fourth radial hole.

Furthermore, the second air inlet part also comprises a second air inlet hole, the fourth sub air inlet part is a fourth radial hole, and the concave part or the communication hole is communicated with the fourth radial hole through the second air inlet hole; wherein, the second air inlet is an axial through hole.

Furthermore, the number of the third sub air inlet portions is at least two, the second air inlet portion further comprises a sixth sub air inlet portion and a second communicating groove, and the sixth sub air inlet portion is communicated with the fourth sub air inlet portion through the second communicating groove; the fourth sub air inlet part is a U-shaped notch, and the sixth sub air inlet part is an axial through hole.

According to another aspect of the present invention, there is provided a fluid machine including the above-mentioned pump body assembly.

By applying the technical scheme of the utility model, the baffle plate is arranged between the first cylinder component and the second cylinder component, and the concave part of the baffle plate is communicated with the first inner cavity and the first slide groove; and/or the recess is in communication with both the second cavity and the second vane slot. In the process of sucking the pump body assembly, namely rotating the rotation angle of the roller from 0 degree to a, the gas in the first slide sheet groove enters the first inner cavity through the concave part; and/or the gas that is located the second slide groove passes through the concave part and gets into in the second inner chamber to avoid taking place the phenomenon of the evacuation of breathing in, so that pump body subassembly is from 0 beginning to breathe in, has reduced the cut-off angle of breathing in, and then has solved among the prior art pump body subassembly and has had the problem of the evacuation phenomenon in the process of breathing in, has promoted pump body subassembly's efficiency, reduces invalid loss of power consumption, eliminates the vacuum cavity noise, has promoted user's use and has experienced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a cross-sectional view of an embodiment of a fluid machine according to the invention;

fig. 2 shows a working principle diagram of a first embodiment of the pump body assembly according to the present invention;

FIG. 3 is a graph showing the relationship between the angle of rotation of the pump body assembly and the pump body assembly pressure in FIG. 2;

FIG. 4 shows a cross-sectional view of the pump body assembly of FIG. 2;

FIG. 5 shows a cross-sectional view A-A of the pump block assembly of FIG. 4;

FIG. 6 shows an exploded view of the pump body assembly of FIG. 2;

FIG. 7 shows a top view of the pump body assembly of FIG. 6;

FIG. 8 shows a front view of the bulkhead of the pump body assembly of FIG. 6;

FIG. 9 shows a sectional view of the separator of FIG. 8 taken along line B-B;

figure 10 shows a cross-sectional view of a partition according to an embodiment two of the pump body assembly of the present invention;

figure 11 shows a cross-sectional view of a third embodiment of a pump body assembly according to the present invention;

FIG. 12 shows a front view of the bulkhead of the pump body assembly of FIG. 11;

FIG. 13 shows a cross-sectional view through C-C of the separator plate of FIG. 12;

figure 14 shows an exploded view of an embodiment four of the pump body assembly according to the present invention;

FIG. 15 shows a partial cross-sectional view of the pump body assembly of FIG. 14;

FIG. 16 shows a cross-sectional view taken along line D-D of the pump body assembly of FIG. 15;

FIG. 17 shows a front view of the first cylinder of the pump block assembly of FIG. 15;

figure 18 shows an exploded view of an embodiment five of a pump body assembly according to the present invention;

FIG. 19 shows a partial cross-sectional view of the pump body assembly of FIG. 18;

FIG. 20 shows a front view of the bulkhead of the pump body assembly of FIG. 18;

figure 21 shows an exploded view of an embodiment six of a pump body assembly according to the present invention;

FIG. 22 shows a partial cross-sectional view of the pump body assembly of FIG. 21;

FIG. 23 shows a partial cross-sectional view of the upper flange of the pump body assembly of FIG. 21;

FIG. 24 shows a front view of the first cylinder of the pump block assembly of FIG. 21;

FIG. 25 shows a partial cross-sectional view of the lower flange of the pump body assembly of FIG. 21; and

fig. 26 shows a front view of the first cylinder of the seventh embodiment of the pump body assembly according to the present invention.

Wherein the figures include the following reference numerals:

10. a first cylinder; 11. a first air intake portion; 111. a first sub air intake portion; 112. a second sub air intake portion; 113. a fifth sub-intake section; 114. a first connecting groove; 115. an air suction cavity; 116. a compression chamber; 117. a first air intake hole; 12. a first lumen; 13. a first slide groove; 20. a second cylinder; 21. a second air intake portion; 211. a third sub-intake portion; 212. a fourth sub-intake section; 213. a second air intake hole; 22. a second lumen; 23. a second slide groove; 30. a partition plate; 31. a recess; 32. a communicating hole; 33. a communicating portion; 40. an upper flange; 41. a first groove; 50. a lower flange; 51. a second groove; 60. a liquid separator; 70. an upper housing assembly; 80. a lower housing assembly; 90. a drive device; 100. a crankshaft; 110. a first roller; 120. a second roller; 130. a first slip sheet; 140. a second slide sheet.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve the problem that the pump body assembly has the evacuation phenomenon in the air suction process in the prior art, the application provides a pump body assembly and a fluid machine with the same.

Example one

As shown in fig. 1 to 9, the pump body assembly includes a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly, the first cylinder assembly includes a first cylinder 10, the first cylinder 10 has a first air inlet 11, a first inner cavity 12 and a first slide groove 13, and both the first air inlet 11 and the first slide groove 13 are communicated with the first inner cavity 12. The second cylinder assembly comprises a second cylinder 20, the second cylinder 20 is provided with a second air inlet portion 21, a second inner cavity 22 and a second sliding sheet groove 23, the second air inlet portion 21 and the second sliding sheet groove 23 are communicated with the second inner cavity 22, and the pump body assembly further comprises a partition plate 30. Wherein, the partition plate 30 is arranged between the first cylinder assembly and the second cylinder assembly, the partition plate 30 is provided with a concave part 31, the concave part 31 is communicated with the first inner cavity 12 and the first slide sheet groove 13, and the concave part 31 is positioned on one side of the first slide sheet groove 13 close to the first air inlet part 11 along the circumferential direction of the first cylinder 10. The concave portion 31 communicates with both the second inner chamber 22 and the second vane groove 23, and the concave portion 31 is located on the side of the second vane groove 23 close to the second air intake portion 21 in the circumferential direction of the second cylinder 20.

By applying the technical scheme of the embodiment, the partition plate 30 is arranged between the first cylinder assembly and the second cylinder assembly, the concave portion 31 of the partition plate 30 is communicated with both the first inner cavity 12 and the first slide sheet groove 13, and the concave portion 31 is communicated with both the second inner cavity 22 and the second slide sheet groove 23. Like this, in the process that pump body subassembly breathes in, the corner of roller rotates by 0 to a in-process promptly, the gas that is arranged in first slide groove 13 passes through the concave part 31 and gets into first inner chamber 12, the gas that is arranged in second slide groove 23 passes through the concave part 31 and gets into in the second inner chamber 22, in order to avoid taking place the phenomenon of breathing in and evacuation, so that pump body subassembly breathes in from 0, the cut-off angle of breathing in has been reduced, and then the problem that pump body subassembly has the evacuation phenomenon in the process of breathing in among the prior art has been solved, pump body subassembly's efficiency has been promoted, reduce invalid power consumption loss, eliminate the vacuum cavity noise, user's use experience has been promoted.

In this embodiment, the above arrangement of the concave portion 31 can also prevent the air suction cavity from instantaneously expanding to generate air suction noise, thereby improving the user experience.

In other embodiments not shown in the drawings, the recess communicates only with both the first internal cavity and the first vane slot. Like this, the in-process of breathing in is carried out at pump body subassembly, the corner of roller is rotated to a's in-process by 0 promptly, the gas that is located first slide inslot passes through the concave part and gets into first inner chamber, in order to avoid taking place to breathe in the phenomenon of evacuation, so that pump body subassembly is from 0 beginning to breathe in, and then solved among the prior art pump body subassembly and in the problem that there is the evacuation phenomenon of breathing in the in-process, pump body subassembly's efficiency has been promoted, reduce invalid power loss, eliminate the vacuum cavity noise, user's use experience has been promoted.

In other embodiments not shown in the drawings, the recess communicates only with both the second internal cavity and the second vane slot. Like this, the in-process of breathing in is carried out at pump body subassembly, the corner of roller is rotated to a's in-process by 0 promptly, the gas that is arranged in the second slide inslot passes through the concave part and gets into in the second inner chamber, in order to avoid taking place to breathe in the phenomenon of evacuation, so that pump body subassembly is from 0 beginning to breathe in, and then solved among the prior art pump body subassembly and in the problem that there is the evacuation phenomenon of breathing in, pump body subassembly's efficiency has been promoted, reduce invalid power consumption loss, eliminate the vacuum cavity noise, user's use experience has been promoted.

In this embodiment, the pump body assembly has a double cylinder structure. It should be noted that the number of cylinders of the pump body assembly is not limited to this, and may be adjusted according to the operating conditions. Optionally, the pump body assembly is of a three-cylinder or multi-cylinder construction.

In the present embodiment, the recess 31 communicates with the first air intake portion 11, and the recess 31 communicates with the second air intake portion 21. In this way, in the process of sucking the pump body assembly, the gas entering the concave portion 31 can enter the first inner cavity 12 through the first air inlet portion 11 and can enter the second inner cavity 22 through the second air inlet portion 21, so that the suction amount of the pump body assembly is increased, and the operation efficiency of the pump body assembly is improved.

In other embodiments not shown in the drawings, the recess communicates only with the first air intake portion. Therefore, in the process of sucking the pump body assembly, gas entering the concave portion can enter the first inner cavity through the first air inlet portion, the air suction sectional area of the pump body assembly is increased, air suction resistance is reduced, and the volumetric efficiency of the pump body assembly is improved.

In other embodiments not shown in the drawings, the recess communicates only with the second air intake portion. Therefore, in the process of sucking the pump body assembly, gas entering the concave portion can enter the second inner cavity through the second air inlet portion, the air suction sectional area of the pump body assembly is increased, air suction resistance is reduced, and the volumetric efficiency of the pump body assembly is improved.

In the present embodiment, the recess 31 is a groove, and the two recesses 31 are provided, and the two recesses 31 are respectively provided on the upper end surface and the lower end surface of the partition board 30. Like this, be located the concave part 31 and first slide groove 13 and the first air inlet portion 11 intercommunication on the up end of baffle 30, be located the concave part 31 and the second slide groove 23 and the second air inlet portion 21 intercommunication on the lower terminal surface of baffle 30 to avoid first cylinder subassembly and second cylinder subassembly to take place the evacuation phenomenon at the in-process of breathing in, and then promoted pump body assembly's efficiency, reduced the loss of invalid power consumption, eliminated the vacuum cavity noise, promoted user's use experience.

As shown in fig. 6 to 9, the separator 30 further has a communication hole 32, and the communication hole 32 communicates with both the first air intake portion 11 and the second air intake portion 21. In this way, in the process of air suction of the pump body assembly, the gas in the first air inlet 11 and the second air inlet 21 can flow through the communication hole 32, so that the air suction sectional area of the pump body assembly is increased, the air suction resistance is reduced, and the volume efficiency of the pump body assembly is improved.

In the present embodiment, the communication hole 32 and the recess 31 are provided independently of each other. Specifically, the concave portion 31 is a circular groove, the communication hole 32 is a circular through hole, and the circular groove and the circular through hole are arranged at intervals, so that the communication hole 32 and the concave portion 31 can be processed more easily and conveniently, and the processing difficulty and the processing cost are reduced.

As shown in fig. 7, the first air intake part 11 includes a first sub air intake part 111 and a second sub air intake part 112 communicating with the first sub air intake part 111, and the first sub air intake part 111 communicates with the first inner chamber 12 through the second sub air intake part 112. The first sub air inlet portion 111 is a first radial hole, and the second sub air inlet portion 112 is a U-shaped notch. Like this, the one end and the U-shaped breach intercommunication of intercommunicating pore 32 to the sectional area of breathing in of increase pump body subassembly, and then reduced pump body subassembly's the resistance of breathing in, promoted pump body subassembly's operating efficiency, reduced the energy consumption. Meanwhile, the structure of the first air inlet part 11 is simpler, the first air inlet part is easy to process and realize, and the processing cost of the pump body assembly is reduced.

As shown in fig. 6, the second air intake portion 21 includes a third sub air intake portion 211 and a fourth sub air intake portion 212 communicating with the third sub air intake portion 211, and the third sub air intake portion 211 communicates with the second internal chamber 22 through the fourth sub air intake portion 212. The third sub air inlet 211 is a third radial hole, and the fourth sub air inlet 212 is a U-shaped notch. Like this, the other end and the U-shaped breach intercommunication of intercommunicating pore 32 to the sectional area of breathing in of increase pump body subassembly, and then reduced pump body subassembly's the resistance of breathing in, promoted pump body subassembly's operating efficiency, reduced the energy consumption. Meanwhile, the structure of the first air inlet part 11 is simpler, the first air inlet part is easy to process and realize, and the processing cost of the pump body assembly is reduced.

Specifically, the orthographic projection of the communication hole 32 on the second sub air intake part 112 is positioned in the second sub air intake part 112, and the orthographic projection of the communication hole 32 on the fourth sub air intake part 212 is positioned in the fourth sub air intake part 212, so that the first air intake part 11 and the second air intake part 21 can be communicated with the communication hole 32, and the air intake reliability of the pump body assembly is improved.

In this embodiment, the first inner cavity 12 includes an air suction cavity 115 and a compression cavity 116, and during the air suction process of the pump body assembly, the air in the first vane groove 13 can enter the air suction cavity 115 of the first cylinder assembly through the concave portion 31, and the air in the second vane groove 23 can enter the air suction cavity 115 of the second cylinder assembly through the concave portion 31, so as to prevent the vacuum phenomenon in the air suction cavity 115 from affecting the energy efficiency of the pump body assembly, and also avoid the noise generated by the pump body assembly due to the vacuum. Meanwhile, the gas introduced into the first gas inlet 11 can be introduced into the first inner chamber 12 not only through the second sub gas inlet 112 but also through the communication hole 32. The gas entering the second air inlet portion 21 can enter the second inner cavity 22 through the fourth sub air inlet portion 212 and can also enter the second inner cavity through the communication hole 32, so that the air suction sectional area of the pump body assembly is increased, and the air suction resistance of the pump body assembly is reduced.

As shown in fig. 1 and 3 to 7, the pump body assembly further includes a crankshaft 100. The crankshaft 100 is disposed through the first cylinder assembly, the partition plate 30 and the second cylinder assembly. The crankshaft 100 includes a first eccentric portion and a second eccentric portion. The first cylinder assembly further includes a first sliding piece 130 and a first roller 110, the first eccentric portion is located in the first inner cavity 12, the first roller 110 is sleeved outside the first eccentric portion and rotates along with the first eccentric portion, the first sliding piece 130 is disposed in the first sliding piece groove 13, and an end portion of the first sliding piece 130 facing the first roller 110 is attached to an outer surface of the first roller 110. The second cylinder assembly further includes a second sliding vane 140 and a second roller 120, the second eccentric portion is located in the second inner cavity 22, the second roller 120 is sleeved outside the second eccentric portion and rotates along with the second eccentric portion, the second sliding vane 140 is disposed in the second sliding vane groove 23, and an end portion of the second sliding vane 140 facing the second roller 120 is attached to an outer surface of the second roller 120.

Specifically, a first inner chamber 12 is formed between an outer surface of the first roller 110 and an inner surface of the first cylinder 10, and the first vane 130 is engaged with the first roller 110 to divide the first inner chamber 12 into two, a low pressure chamber and a high pressure chamber. With the change of the position of the first roller 110, the low pressure chamber gradually increases to form negative pressure to suck in low-temperature and low-pressure refrigerant, and the high pressure chamber gradually decreases in volume to compress the refrigerant into high-temperature and high-pressure refrigerant and discharge the refrigerant, thereby realizing the compression of the refrigerant. In this way, the first cylinder assembly and the second cylinder assembly can simultaneously suck the refrigerant from the liquid distributor 60 to perform the above-mentioned refrigerant compression operation, and due to the opposite arrangement of the first eccentric part and the second eccentric part of the crankshaft 100, the states of the first cylinder 10 and the second cylinder 20 sucking the refrigerant and compressing the refrigerant are always 180 ° different, the suction speed of the first cylinder 10 is inversely proportional to the suction speed of the second cylinder 20, that is, the suction speed of the first cylinder 10 is increased, the suction speed of the second cylinder 20 is decreased, and finally the high-temperature and high-pressure refrigerant compressed by the two cylinders is discharged out of the pump body assembly.

As shown in fig. 4, the pump body assembly further includes an upper flange 40 and a lower flange 50. Wherein the upper flange 40 is located above the first cylinder assembly and connected to the first cylinder 10, and the lower flange 50 is located below the second cylinder assembly and connected to the second cylinder 20.

As shown in fig. 1, the present application also provides a fluid machine including the pump body assembly described above.

Optionally, the fluid machine is a compressor.

As shown in fig. 1, the compressor further includes a liquid distributor 60, an upper shell assembly 70, a lower shell assembly 80, and a driving device 90. The driving device 90 is connected to the crankshaft 100 to drive the crankshaft 100 to rotate. The liquid separator 60 communicates with an intake portion of the compressor to separate a gas-liquid refrigerant introduced into the intake portion. A mounting cavity is formed between the upper shell assembly 70 and the lower shell assembly 80, and the pump body assembly is arranged in the mounting cavity.

Specifically, the operating principle of the compressor is as follows:

the liquid cooling medium discharged from the evaporator firstly enters the liquid distributor 60 and then enters the compressor through the liquid distributor 60, the gas entering the compressor is sucked by the first cylinder assembly and the second cylinder assembly, and the pump body assembly compresses the gas to form a high-temperature high-pressure gaseous refrigerant and discharges the high-temperature high-pressure gaseous refrigerant to the outside of the compressor. Then, the high-temperature high-pressure refrigerant is converted into low-temperature high-pressure gas-liquid mixed refrigerant through the condenser, throttled and depressurized through the throttle valve, enters the evaporator to exchange heat with the outside to complete the whole refrigeration cycle, and finally returns to the compressor to perform the next refrigeration cycle.

Example two

The pump body assembly in the second embodiment is different from the first embodiment in that: the recess 31 is different in structure.

As shown in fig. 10, the recess 31 is a through hole. In this way, in the process of air suction of the pump body assembly, air firstly enters the concave portion 31 through the first sliding sheet groove 13 and the second sliding sheet groove 23 and then enters the first inner cavity 12 and the second inner cavity 22 through the concave portion 31 respectively, so that the pump body assembly is prevented from being vacuumized in the air suction process to influence the energy efficiency of the pump body assembly. Meanwhile, the concave part 31 is simpler in structure, easy to machine and realize, and the machining cost and the machining difficulty of the concave part 31 are reduced.

EXAMPLE III

The pump body assembly in the third embodiment is different from that in the first embodiment in that: the recess 31 is different in structure.

As shown in fig. 11 to 13, the recess 31 is a through hole that communicates with the first vane groove 13 and the first air intake portion 11, and communicates with the second vane groove 23 and the second air intake portion 21. In this way, during the process of air suction of the pump body assembly, air can enter the concave portion 31 through the first sliding sheet groove 13 and the second sliding sheet groove 23 and then respectively enter the first inner cavity 12 and the second inner cavity 22 through the concave portion 31, so that the pump body assembly is prevented from being vacuumized during the air suction process to influence the energy efficiency of the pump body assembly. Meanwhile, the concave portion 31 is communicated with both the first air inlet portion 11 and the second air inlet portion 21, so that the air suction sectional area of the pump body assembly is increased, the air suction resistance is reduced, and the volumetric efficiency of the pump body assembly is improved.

Example four

The pump body assembly in the fourth embodiment is different from that in the third embodiment in that: the second sub intake air portion 112 is different in structure.

As shown in fig. 14 to 17, the first air intake portion 11 further includes a first air intake hole 117, the second sub air intake portion 112 is a second radial hole, and the concave portion 31 is communicated with the second radial hole through the first air intake hole 117. Wherein, the first air inlet hole 117 is an axial through hole. In this way, the concave portion 31 is communicated with the first air inlet portion 11 through the first air inlet hole 117, so that the concave portion 31 can be communicated with the first air inlet portion 11, the structure of the first air inlet portion 11 is more diversified, and the processing difficulty of workers is reduced.

Specifically, the first radial hole and the second radial hole are coaxially arranged, and the inner diameter of the first radial hole is larger than that of the second radial hole. The orthographic projection of the first air inlet hole 117 on the concave portion 31 is located in the concave portion 31, so that the first air inlet hole 117 can be communicated with the concave portion 31, the air suction sectional area of the pump body assembly is further increased, and the volume ratio of the pump body assembly is improved.

In other embodiments not shown in the drawings, the communication hole communicates with the second radial hole through the first intake hole. Like this, above-mentioned setting ensures that the intercommunication portion can communicate with first air inlet portion, also makes the structure of first air inlet portion more diversified, has reduced staff's the processing degree of difficulty.

Optionally, the end of the second radial bore in communication with the first lumen 12 has a chamfered configuration. Thus, the communication part can be communicated with the first air inlet part 11, the structure of the first air inlet part 11 is more diversified, and the processing difficulty of workers is reduced.

As shown in fig. 14 and 15, the second air intake portion 21 further includes a second air intake hole 213, the fourth sub air intake portion 212 is a fourth radial hole, and the recess 31 communicates with the fourth radial hole through the second air intake hole 213. Wherein, the second air inlet hole 213 is an axial through hole. In this way, the concave portion 31 is communicated with the second air inlet portion 21 through the second air inlet hole 213, so as to ensure that the concave portion 31 can be communicated with the second air inlet portion 21, the structure of the second air inlet portion 21 is more diversified, and the processing difficulty of workers is reduced.

Specifically, the third radial hole and the fourth radial hole are coaxially arranged, and the inner diameter of the third radial hole is larger than that of the fourth radial hole. The orthographic projection of the second air inlet hole 213 on the concave part 31 is positioned in the concave part 31, so that the second air inlet hole 213 can be communicated with the concave part 31, the air suction sectional area of the pump body assembly is further increased, and the volume ratio of the pump body assembly is improved.

In other embodiments not shown in the drawings, the communication hole communicates with the fourth radial hole through the second intake hole. Like this, above-mentioned setting ensures that the intercommunication portion can communicate with the second portion of admitting air, also makes the structure of second portion of admitting air more diversified, has reduced staff's the processing degree of difficulty.

Optionally, the end of the fourth radial hole in communication with the second lumen 22 has a chamfered configuration. Thus, the communicating part is ensured to be communicated with the second air inlet part 21, the structure of the second air inlet part 21 is more diversified, and the processing difficulty of workers is reduced.

EXAMPLE five

The pump body assembly in the fifth embodiment is different from the first embodiment in that: the structure of the separator 30 is different.

As shown in fig. 18 to 20, the partition plate 30 further includes a communicating portion 33, and the communicating hole 32 communicates with the concave portion 31 through the communicating portion 33. The communicating portion 33 is a communicating chamber. Specifically, the concave portion 31 is communicated with the communication hole 32 through the communication portion 33, and during the suction of the pump body assembly, the gas in the first slide sheet groove 13 enters the first inner cavity 12 through the concave portion 31, and the gas in the second slide sheet groove 23 enters the second inner cavity 22 through the concave portion 31, so that the suction and vacuum pumping phenomena are avoided. Meanwhile, the gas entering the concave portion 31 can also enter the communication hole 32 through the communication cavity, so that the suction sectional area of the pump body assembly is increased, the suction resistance is reduced, and the volume efficiency of the pump body assembly is improved.

In other embodiments not shown in the figures, the communication portions are through holes. Therefore, the structure of the communicating part is simpler, the communicating part is easy to process and realize, and the processing cost and the processing difficulty of the communicating part are reduced.

EXAMPLE six

The pump body assembly in the sixth embodiment is different from the first embodiment in that: the second sub intake air portion 112 is different in structure.

As shown in fig. 21-24, the pump body assembly further includes an upper flange 40. The upper flange 40 is arranged above the first cylinder assembly, a first groove 41 is arranged on the lower end face of the upper flange 40, and the first groove 41 is communicated with the first air inlet portion 11 and the first slide sheet groove 13. Like this, at the in-process that pump body subassembly was breathed in, gaseous can get into first inner chamber 12 through first recess 41 and first air inlet 11 to the sectional area of breathing in of increase pump body subassembly has then reduced the resistance of breathing in, has improved pump body subassembly's volumetric efficiency.

As shown in fig. 21, 22 and 25, the pump body assembly further includes a lower flange 50. Wherein, the lower flange 50 is arranged below the second cylinder component, the upper end surface of the lower flange 50 is provided with a second groove 51, and the second groove 51 is communicated with both the second air inlet part 21 and the second slide sheet groove 23. In this way, in the process of sucking the pump body assembly, gas can enter the second inner cavity 22 through the second groove 51 and the second air inlet portion 21 so as to increase the air suction sectional area of the pump body assembly, thereby reducing the air suction resistance and improving the volumetric efficiency of the pump body assembly.

EXAMPLE seven

The pump body assembly in the seventh embodiment is different from the first embodiment in that: the second sub intake air portion 112 is different in structure.

Alternatively, the number of the first sub air intake portions 111 is at least two, the first air intake portion 11 further includes a fifth sub air intake portion 113 and a first connecting groove 114, and the fifth sub air intake portion 113 is communicated with the second sub air intake portion 112 through the first connecting groove 114. The second sub air inlet 112 is a U-shaped notch, and the fifth sub air inlet 113 is an axial through hole. As shown in fig. 26, the number of the first sub air intake portions 111 is two, and the inner diameters of the two first sub air intake portions 111 are gradually reduced along the direction from the first sub air intake portion 111 to the second sub air intake portion 112, so that the structure of the first air intake portion 11 is more diversified, and the processing difficulty of workers is reduced.

Alternatively, the number of the third sub intake air portions 211 is at least two, and the second intake air portion 21 further includes a sixth sub intake air portion and a second communicating groove, and the sixth sub intake air portion communicates with the fourth sub intake air portion 212 through the second communicating groove. The fourth sub air inlet portion 212 is a U-shaped notch, and the sixth sub air inlet portion is an axial through hole. In this embodiment, the number of the third sub air intake portions 211 is two, and the inner diameters of the two third sub air intake portions 211 gradually decrease along the direction from the third sub air intake portion 211 to the fourth sub air intake portion 212, so that the structure of the second air intake portion 21 is more diversified, and the processing difficulty of the worker is reduced.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the partition plate is arranged between the first cylinder assembly and the second cylinder assembly, and the concave part of the partition plate is communicated with the first inner cavity and the first slide sheet groove; and/or the recess is in communication with both the second cavity and the second vane slot. In the process of sucking the pump body assembly, namely rotating the rotation angle of the roller from 0 degree to a, the gas in the first slide sheet groove enters the first inner cavity through the concave part; and/or the gas that is located the second slide groove passes through the concave part and gets into in the second inner chamber to avoid taking place the phenomenon of the evacuation of breathing in, so that pump body subassembly is from 0 beginning to breathe in, has reduced the cut-off angle of breathing in, and then has solved among the prior art pump body subassembly and has had the problem of the evacuation phenomenon in the process of breathing in, has promoted pump body subassembly's efficiency, reduces invalid loss of power consumption, eliminates the vacuum cavity noise, has promoted user's use and has experienced.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (16)

1. A pump body assembly comprises a first cylinder assembly and a second cylinder assembly located below the first cylinder assembly, wherein the first cylinder assembly comprises a first cylinder (10), the first cylinder (10) is provided with a first air inlet portion (11), a first inner cavity (12) and a first slide sheet groove (13), and the first air inlet portion (11) and the first slide sheet groove (13) are communicated with the first inner cavity (12); the second cylinder assembly comprises a second cylinder (20), the second cylinder (20) is provided with a second air inlet portion (21), a second inner cavity (22) and a second sliding sheet groove (23), the second air inlet portion (21) and the second sliding sheet groove (23) are communicated with the second inner cavity (22), and the pump body assembly is characterized by further comprising:

a partition plate (30) disposed between the first cylinder assembly and the second cylinder assembly, the partition plate (30) having a recess (31), the recess (31) communicating with both the first inner chamber (12) and the first vane groove (13), the recess (31) being located on a side of the first vane groove (13) close to the first intake portion (11) in a circumferential direction of the first cylinder (10); and/or the presence of a gas in the gas,

the concave portion (31) is communicated with both the second inner cavity (22) and the second sliding sheet groove (23), and the concave portion (31) is located on one side, close to the second air inlet portion (21), of the second sliding sheet groove (23) along the circumferential direction of the second cylinder (20).

2. The pump body assembly according to claim 1, characterized in that said recess (31) communicates with said first intake portion (11); and/or the recess (31) communicates with the second air intake portion (21).

3. The pump body assembly according to claim 1, characterized in that said recesses (31) are grooves and said recesses (31) are two, said two recesses (31) being located respectively on an upper end face and a lower end face of said bulkhead (30).

4. The pump body assembly according to claim 1, characterized in that said recess (31) is a through hole.

5. The pump body assembly according to claim 1, wherein the partition plate (30) further has a communication hole (32), the communication hole (32) communicating with both the first intake portion (11) and the second intake portion (21).

6. Pump body assembly according to claim 5, characterized in that said communication hole (32) and said recess (31) are provided independently of each other.

7. The pump body assembly according to claim 5, characterized in that the partition (30) further comprises a communication portion (33), the communication hole (32) communicating with the recess (31) through the communication portion (33); wherein the communication part (33) is a communication cavity; alternatively, the communication portion (33) is a through hole.

8. The pump body assembly of claim 1, further comprising:

the upper flange (40) is arranged above the first cylinder assembly, a first groove (41) is formed in the lower end face of the upper flange (40), and the first groove (41) is communicated with the first air inlet portion (11) and the first slide sheet groove (13).

9. The pump body assembly of claim 1, further comprising:

the lower flange (50) is arranged below the second cylinder assembly, a second groove (52) is formed in the upper end face of the lower flange (50), and the second groove (52) is communicated with the second air inlet portion (21) and the second slide sheet groove (23).

10. The pump body assembly according to claim 5, characterized in that the first air intake portion (11) comprises a first sub air intake portion (111) and a second sub air intake portion (112) communicating with the first sub air intake portion (111), the first sub air intake portion (111) communicating with the first inner cavity (12) through the second sub air intake portion (112); the first sub air inlet part (111) is a first radial hole, and the second sub air inlet part (112) is a U-shaped notch or a second radial hole.

11. The pump body assembly according to claim 10, characterized in that the first air intake portion (11) further comprises a first air intake hole (117), the second sub air intake portion (112) is a second radial hole, and the recess (31) or the communication hole (32) communicates with the second radial hole through the first air intake hole (117); wherein, the first air inlet hole (117) is an axial through hole.

12. The pump body assembly according to claim 10, wherein the first sub intake portion (111) is at least two, the first intake portion (11) further includes a fifth sub intake portion (113) and a first connecting groove (114), and the fifth sub intake portion (113) communicates with the second sub intake portion (112) through the first connecting groove (114); the second sub air inlet part (112) is a U-shaped notch, and the fifth sub air inlet part (113) is an axial through hole.

13. The pump body assembly according to claim 5, wherein the second air intake portion (21) comprises a third sub air intake portion (211) and a fourth sub air intake portion (212) communicating with the third sub air intake portion (211), the third sub air intake portion (211) communicating with the second internal cavity (22) through the fourth sub air intake portion (212); the third sub air inlet part (211) is a third radial hole, and the fourth sub air inlet part (212) is a U-shaped notch or a fourth radial hole.

14. The pump body assembly according to claim 13, wherein the second air intake portion (21) further comprises a second air intake hole (213), the fourth sub air intake portion (212) is a fourth radial hole, and the recess (31) or the communication hole (32) communicates with the fourth radial hole through the second air intake hole (213); wherein, the second air inlet hole (213) is an axial through hole.

15. The pump body assembly according to claim 13, wherein the number of the third sub intake air portions (211) is at least two, and the second intake air portion (21) further includes a sixth sub intake air portion and a second communication groove, the sixth sub intake air portion communicating with the fourth sub intake air portion (212) through the second communication groove; the fourth sub air inlet part (212) is a U-shaped notch, and the sixth sub air inlet part is an axial through hole.

16. A fluid machine, characterized by comprising a pump body assembly according to any one of claims 1 to 15.

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