CN115467829A - Pump body subassembly, compressor unit spare and air conditioning system - Google Patents
Pump body subassembly, compressor unit spare and air conditioning system Download PDFInfo
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- CN115467829A CN115467829A CN202211182913.0A CN202211182913A CN115467829A CN 115467829 A CN115467829 A CN 115467829A CN 202211182913 A CN202211182913 A CN 202211182913A CN 115467829 A CN115467829 A CN 115467829A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 239000003507 refrigerant Substances 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 16
- 239000010726 refrigerant oil Substances 0.000 abstract description 7
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/18—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
- F04C28/22—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/10—Stators
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
The invention provides a pump body assembly, a compressor assembly and an air conditioning system. This pump body subassembly includes: a first cylinder (203) having a first air suction hole (301); a second cylinder (205) which is a variable-displacement cylinder and has a second suction hole (302); and an adjusting structure, which is arranged corresponding to the second suction hole (302), and is configured to be capable of closing the second suction hole (302) when the second cylinder (205) is unloaded and opening the second suction hole (302) when the second cylinder (205) is operated. According to the pump body assembly, the problems that the oil level in the compressor is reduced and the upper cylinder presses oil due to the fact that the refrigerant oil leaks into the liquid distributor under the single-cylinder working mode of the compressor can be solved.
Description
Technical Field
The invention relates to the technical field of air compression, in particular to a pump body assembly, a compressor assembly and an air conditioning system.
Background
Variable capacity compressors are increasingly being used in multi-split air conditioning systems due to their energy efficient nature. The existing variable-capacity compressor generally adopts a sliding vane tail sealing structure, and high pressure or low pressure is introduced to realize the work or unloading of a variable-capacity cylinder. The tail part of a sliding sheet of the variable-capacity air cylinder is communicated with an air suction pipe or an exhaust pipe of a compressor, namely, a pin head part can be communicated with high pressure or low pressure, the tail part of a pin is always communicated with an air suction hole of the air cylinder, and the work or unloading of the air cylinder can be realized under the action of pressure difference between the upper side and the lower side of the pin.
When the compressor is in a single-cylinder operation mode, the high pressure is inside the shell, and the low pressure is inside the lower cylinder, so that the refrigerant oil in the compressor leaks into the lower cylinder through the gap. And the lower cylinder is communicated with the inside of the liquid separator through an air suction pipeline communicated with the lower cylinder, so that a part of the refrigeration oil can be accumulated in the liquid separator.
On one hand, the oil level in the compressor is reduced, and the compressor is not lubricated enough, so that the compressor is worn and loses efficacy; on the other hand, the refrigeration oil enters the upper cylinder through an air suction pipeline communicated with the upper cylinder to cause the upper cylinder to press oil, and the actual working volume of the cylinder is reduced, so that the energy efficiency of the compressor is reduced.
Disclosure of Invention
The invention mainly aims to provide a pump body assembly, a compressor assembly and an air conditioning system, which can avoid the problems that the oil level in the compressor is reduced and the upper cylinder presses oil because the compressor leaks frozen oil into a liquid separator in a single-cylinder working mode.
To achieve the above object, according to an aspect of the present invention, there is provided a pump body assembly including:
a first cylinder having a first suction hole;
the second cylinder is a variable-capacity cylinder and is provided with a second air suction hole;
and the adjusting structure is arranged corresponding to the second suction hole and is configured to close the second suction hole when the second cylinder is unloaded and open the second suction hole when the second cylinder is operated.
Furthermore, the adjusting structure comprises a first pin, the second cylinder comprises a first pin hole communicated to the second air suction hole, the first pin hole and the second air suction hole are arranged in a crossed mode, the first pin can slide into the second air suction hole or slide out of the second air suction hole through the first pin hole, the diameter of the first pin hole is D1, the diameter of the second air suction hole at the position of the first pin hole is D2, and D1 is larger than or equal to D2.
Further, the pump body assembly further comprises a first flange, the first flange is arranged on one side, away from the first cylinder, of the second cylinder, a first pin hole is formed in one side, facing the second cylinder, of the first flange, the first pin hole in the first flange corresponds to the first pin hole in the second cylinder, and the first pin is arranged in the first pin hole of the first flange in a sliding mode.
Further, one side of the first pin hole, which is far away from the second air suction hole, is provided with a first pressure switching hole, and the first pressure switching hole is communicated with the first pin hole and is configured to adjust the tail pressure of the first pin so as to control the first pin hole to open or close the second air suction hole.
Furthermore, the first pin hole in the first flange is a blind hole, and a first pressure switching hole is formed in the bottom of the first pin hole.
Further, the bottom of the first pin hole is provided with a return structure, and the return structure is configured to provide a return acting force for opening the second suction hole for the first pin.
Furthermore, the return structure is a tension spring or a magnet arranged at the bottom of the first pin hole, and a channel communicated with the first pressure switching hole and the first pin hole is formed in the magnet.
Furthermore, the first pressure switching hole is a T-shaped hole, the first pressure switching hole penetrates through the first flange along the axial direction and the lateral direction, a lower cover plate is arranged on one side, away from the second cylinder, of the first flange, and the lower cover plate blocks one side, penetrating through the first flange along the axial direction, of the first pressure switching hole.
Further, the pump body assembly further comprises a variable-volume mechanism, the second cylinder is provided with a sliding groove, a second sliding sheet is arranged in the sliding groove, and the variable-volume mechanism is constructed to load or unload the second sliding sheet.
Further, the varactor mechanism includes the second pin, second pinhole and second elastic component, the second pinhole sets up in first flange, second pin and second elastic component set up in the second pinhole, the second pinhole is constructed for bottom and high-pressure refrigerant intercommunication, the top of second pinhole and the spout intercommunication of second gleitbretter afterbody, still be provided with the second pressure switching hole of adjusting the spout internal pressure of second gleitbretter afterbody on the first flange, second gleitbretter bottom is provided with the spacing groove, the second pin can block into the spacing groove or deviate from the spacing groove, the second elastic component provides the elastic force who deviates from the spacing groove for the second pin.
According to another aspect of the present invention, there is provided a compressor assembly, comprising a compressor, the compressor including a pump body assembly, the pump body assembly being as described above.
Furthermore, the compressor assembly further comprises a liquid distributor, the liquid distributor is communicated with the first air suction hole of the pump body assembly through a first air suction pipeline, and the liquid distributor is communicated with the second air suction hole of the pump body assembly through a second air suction pipeline.
Further, when the pump body assembly includes the first pressure switching hole, the compressor assembly further includes a first control circuit capable of selectively communicating with the suction pipe of the liquid separator or the discharge pipe of the compressor.
Further, when the pump body assembly includes the second pressure switching hole, the compressor assembly further includes a second control circuit capable of selectively communicating with the suction pipe of the dispenser or the discharge pipe of the compressor.
According to another aspect of the present invention, an air conditioning system is provided, which comprises the pump body assembly or the compressor assembly.
By applying the technical scheme of the invention, the pump body assembly comprises: a first cylinder having a first suction hole; the second cylinder is a variable-capacity cylinder and is provided with a second air suction hole; and the adjusting structure is arranged corresponding to the second suction hole and is configured to close the second suction hole when the second cylinder is unloaded and open the second suction hole when the second cylinder is operated. This pump body subassembly can utilize the regulation structure to close the second suction hole when the uninstallation of second cylinder for the second cylinder as the varactor cylinder breaks off the communicating relation of working volume and knockout when being in the uninstallation state, cuts off the circulation route of frozen oil, can avoid the compressor under single cylinder mode, and frozen oil leaks to the knockout in through the second cylinder, leads to the inside oil level of compressor to reduce and go up the problem of cylinder pressure oil, improves the work efficiency of compressor.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, 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 structural schematic view of a pump block assembly of an embodiment of the present invention;
FIG. 2 shows a cross-sectional block diagram of the pump body assembly of an embodiment of the present invention with the first pin in an unloaded state;
FIG. 3 shows a cross-sectional block diagram of the pump body assembly of an embodiment of the present invention with the first pin in a loaded state;
FIG. 4 shows a schematic structural view of the pressure-varying mechanism of the pump block assembly of an embodiment of the present invention;
FIG. 5 shows a perspective view of a second cylinder of the pump block assembly according to an embodiment of the invention;
FIG. 6 shows a schematic cross-sectional structural view of the second cylinder of the pump block assembly of the embodiment of the present invention;
FIG. 7 shows a perspective view of a first flange of the pump block assembly according to an embodiment of the invention;
FIG. 8 shows a cross-sectional structural view of a first flange of the pump block assembly of an embodiment of the present invention; and
fig. 9 shows a schematic structural view of a compressor assembly of an embodiment of the present invention.
Wherein the figures include the following reference numerals:
101. a motor assembly; 102. a pump body assembly; 103. a liquid separator; 104. a first suction line; 105. a second aspiration line; 106. a first control loop; 107. a second control loop; 108. a first solenoid valve; 109. a second solenoid valve; 110. a third electromagnetic valve; 111. a fourth solenoid valve; 112. an air intake duct; 113. an exhaust pipe; 201. a crankshaft; 202. a second flange; 203. a first cylinder; 204. a partition plate; 205. a second cylinder; 206. a first flange; 207. a lower cover plate; 208. a muffler; 209. a first roller; 210. a first elastic member; 211. a first slip sheet; 212. a second roller; 213. a second slip sheet; 214. a second pin; 215. a second elastic member; 301. a first air-intake hole; 302. a second suction hole; 303. a first pin; 304. a first pressure switching hole; 305. a second pressure switching orifice; 306. a first pin hole; 307. a second pin hole; 308. and a magnet.
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 embodiments with reference to the attached drawings.
Referring collectively to fig. 1-9, according to an embodiment of the present invention, a pump body assembly includes: a first cylinder 203 having a first suction hole 301; a second cylinder 205, which is a variable displacement cylinder, having a second suction hole 302; the adjusting structure, which is provided in correspondence with the second suction hole 302, is configured to be able to close the second suction hole 302 when the second cylinder 205 is unloaded and to open the second suction hole 302 when the second cylinder 205 is operated.
When the second cylinder 205 is unloaded, the pump body assembly can utilize the adjusting structure to close the second suction hole 302, so that the second cylinder 205 serving as a variable-volume cylinder is in an unloading state, the communication relation between the working volume and the liquid distributor 103 is cut off, the circulation path of the refrigerant oil is cut off, the problems that the oil level inside the compressor is reduced and the oil is pressed by the upper cylinder due to the fact that the refrigerant oil leaks into the liquid distributor 103 through the second cylinder 205 under the single-cylinder working mode of the compressor can be avoided, and the working energy efficiency of the compressor is improved.
In one embodiment, the adjusting structure comprises a first pin 303, the second cylinder 205 comprises a first pin hole 306 communicated to the second suction hole 302, the first pin hole 306 and the second suction hole 302 are arranged in a crossed manner, the first pin 303 can slide into the second suction hole 302 or slide out of the second suction hole 302 through the first pin hole 306, the diameter of the first pin hole 306 is D1, the diameter of the second suction hole 302 at the position of the first pin hole 306 is D2, and D1 is larger than or equal to D2.
In this embodiment, a center line of the first pin hole 306 on the second cylinder 205 intersects and is perpendicular to a center line of the second suction hole 302, so that the center of the first pin hole 306 is aligned with the center of the second suction hole 302, and no deviation occurs, and the shape of the first pin hole 306 is adapted to the shape of the first pin hole 303, which can prevent air leakage or oil leakage from a fit gap between the first pin hole 303 and the first pin hole 306, and meanwhile, because the diameter D1 of the first pin hole 306 is greater than or equal to the diameter D2 of the second suction hole 302 at the position, the first pin 303 entering the first pin hole 306 can completely block the second suction hole 302 when reaching a working position, and completely block the communication between the working volume of the liquid separator 103 and the second cylinder 205, thereby effectively avoiding the problem that the refrigerant oil flows to the liquid separator 103 through the second cylinder 205 when the second cylinder 205 is unloaded, and improving the working energy efficiency of the compressor.
In one embodiment, the pump body assembly further includes a first flange 206, the first flange 206 is disposed on a side of the second cylinder 205 away from the first cylinder 203, a first pin hole 306 is formed on a side of the first flange 206 facing the second cylinder 205, the first pin hole 306 on the first flange 206 is disposed corresponding to the first pin hole 306 on the second cylinder 205, and the first pin 303 is slidably disposed in the first pin hole 306 of the first flange 206.
In this embodiment, the pump body assembly further includes a crankshaft 201, the first cylinder 203 is an upper cylinder, the second cylinder 205 is a lower cylinder, the first flange 206 is a lower flange, a partition plate 204 is disposed between the first cylinder 203 and the second cylinder 205, and the first cylinder 203, the partition plate 204, the second cylinder 205 and the first flange 206 are all sleeved on the crankshaft 201 and sequentially arranged along the axial direction of the crankshaft 201. The first flange 206 is also provided with a first pin hole 306, the first pin hole 306 on the first flange 206 is aligned with the first pin hole 306 on the second cylinder 205, the first pin 303 can be simultaneously arranged in the first pin holes 306 on the first flange 206 and the second cylinder 205, and by arranging the first pin hole 306 on the first flange 206, the overall length of the first pin hole 306 can be increased, so that the first pin 303 can be conveniently installed and arranged, a sufficient movement space can be provided for the movement of the first pin 303, and the on-off control requirement of the second air suction hole 302 can be better met.
In the present embodiment, the first pin hole 306 is provided vertically, and the first pin 303 is slidably provided in the first pin hole 306 in the vertical direction.
In order to reduce the sliding friction of the first pin hole 303 in the first pin hole 306, the first pin hole 306 may be subjected to a hole enlarging process on the side of the first pin hole 306 away from the second suction hole 302, so that a section of the first pin hole 306 on the side has a larger diameter than the first pin hole 303, and a clearance fit is formed between the hole wall of the first pin hole 306 and the first pin hole 303 at the section, thereby reducing the contact surface between the first pin hole 303 and the hole wall of the first pin hole 306.
The first pin hole 306 on the second cylinder 205 should have the same diameter as the first pin 303 so that a sealing fit is formed between the two, which effectively prevents the refrigerant leakage problem.
In one embodiment, a side of the first pin hole 306 away from the second suction hole 302 is provided with a first pressure switching hole 304, and the first pressure switching hole 304 is communicated with the first pin hole 306 and configured to adjust a tail pressure of the first pin 303 to control the first pin hole 306 to open or close the second suction hole 302.
The first pressure switching hole 304 can be selectively communicated with high-pressure gas or low-pressure gas, the high-pressure gas or the low-pressure gas can be from the inside of the compressor or from the outside of the compressor, and the refrigerant pressure at the tail part of the first pin 303 can be adjusted by selecting the gas introduced into the first pressure switching hole 304, so that the first pin 303 can slide upwards into the second suction hole 302 to disconnect the second suction hole 302, or slide downwards out of the second suction hole 302 to connect the second suction hole 302.
In this embodiment, since the second suction hole 302 is a suction channel and the sucked low-pressure gaseous refrigerant is in the liquid separator 103, the second suction hole 302 can be basically considered as a constant low-pressure state, at this time, when the second cylinder 205 is in an unloaded state, high-pressure gas can be introduced into the first pressure switching hole 304, under the action of the high-pressure gas, the first pin 303 ascends and is clamped into the second suction hole 302, so as to block the second suction hole 302, and the refrigerant oil is placed from the second cylinder 205 into the liquid separator 103 through the second suction hole 302; when the second cylinder 205 is in a working state, low-pressure gas can be introduced into the first pressure switching hole 304 at this time, the gas pressures at the two ends of the first pin hole 306 are balanced, the first pin 303 slides downwards to be separated from the second suction hole 302, so that the second suction hole 302 is in a communicating state, and the normal operation of the second cylinder 205 is ensured.
In one embodiment, the first pin hole 306 of the first flange 206 is a blind hole, and the first pressure switching hole 304 is opened at the bottom of the first pin hole 306. In this embodiment, the first pin hole 306 is a blind hole, the bottom of the first pin hole 306 is provided with the first pressure switching hole 304, the diameter of the first pin hole 306 is larger than that of the first pressure switching hole 304, a stepped hole can be formed at the bottom of the first pin hole 306 by using the diameter difference between the first pin hole 306 and the first pressure switching hole 304, and the stepped hole can be used for forming stop positioning for the first pin 303 and realizing pressure adjustment for the bottom of the first pin 303 by using the first pressure switching hole 304.
In one embodiment, the bottom of first pin hole 306 is provided with a return structure configured to provide a return force to first pin 303 to open second suction hole 302.
The return structure has the function of assisting the first pin 303 to move up and down when the first pin 303 cannot completely return to the first pin hole 306 under the action of self gravity when the friction force caused by mutual abrasion among parts or other factors is abnormally increased, so that the reliability of the adjusting structure is enhanced.
In one embodiment, the return structure is a tension spring or a magnet 308 disposed at the bottom of the first pin hole 306, and when the return structure is the magnet 308, the magnet 308 is provided with a passage for communicating the first pressure switching hole 304 and the first pin hole 306, so that the high-pressure gas will not be influenced to jack up the first pin 303.
The magnet 308 may be an annular structure or may be a plurality of block-like structures that are circumferentially spaced apart.
When the magnet 308 is of a ring-shaped configuration, it may be secured to the first pin hole 306 by interference fit or by gluing. When the magnet 308 is a block-shaped structure, it can be fixed at the bottom of the first pin hole 306 by gluing or can be further screwed by other methods.
In one embodiment, the first pressure switching hole 304 is a T-shaped hole, the first pressure switching hole 304 penetrates through the first flange 206 both axially and laterally, a lower cover plate 207 is disposed on a side of the first flange 206 away from the second cylinder 205, and the lower cover plate 207 blocks the side of the first pressure switching hole 304 penetrating through the first flange 206 axially.
In the present embodiment, the first pressure switching hole 304 is a T-shaped hole, and includes an axial hole and a radial hole, wherein the axial hole and the radial hole are communicated with each other, and the axial hole extends to the first pin hole 306 to be communicated with the first pin hole 306. The radial holes extend radially through the sidewall of the first flange 206 to facilitate communication with the gas outside the compressor.
The axial hole end of the first pressure switching hole 304 is blocked by the lower cover plate 207, and therefore cannot be communicated with the inner cavity of the compressor, so that the internal pressure of the first pressure switching hole 304 cannot be influenced by the pressure of the inner cavity of the compressor, and only can be influenced by the pressure of external gas, and therefore the control precision is higher.
In one embodiment, the pump body assembly further comprises a variable displacement mechanism, the second cylinder 205 is provided with a sliding slot, the sliding slot is provided with a second sliding sheet 213, and the variable displacement mechanism is configured to load or unload the second sliding sheet 213.
The working state of the second cylinder 205 can be effectively controlled by loading or unloading the first slide sheet 211 through the variable displacement mechanism.
In one embodiment, the displacement-varying mechanism includes a second pin 214, a second pin hole 307, and a second elastic member 215, the second pin hole 307 is disposed in the first flange 206, the second pin 214 and the second elastic member 215 are disposed in the second pin hole 307, the second pin hole 307 is configured to communicate with the high-pressure refrigerant at the bottom, the top of the second pin hole 307 communicates with the sliding slot at the tail of the second sliding piece 213, a second pressure switching hole 305 for adjusting the pressure in the sliding slot at the tail of the second sliding piece 213 is further disposed on the first flange 206, a limiting slot is disposed at the bottom of the second sliding piece 213, the second pin 214 can be inserted into or removed from the limiting slot, and the second elastic member 215 provides the elastic force for the second pin 214 to be removed from the limiting slot.
In the present embodiment, the bottom of the second pin hole 307 is always in high pressure communication with the inside of the casing of the compressor, i.e., the bottom of the second pin 214 is always kept at high pressure, and therefore, the sliding position of the second pin 214 can be adjusted by the top pressure and the action of an auxiliary member such as a spring. The sliding slot at the tail of the second sliding vane 213 of the second cylinder 205 is a sealed cavity and is selectively communicated with high-pressure gas or low-pressure gas through an electromagnetic valve.
Because the chute at the tail of the second sliding vane 213 is communicated with the top of the second pin hole 307, the pressure of the refrigerant at the top of the second pin hole 307 can be adjusted by using the refrigerant introduced into the chute at the tail of the second sliding vane 213, and because the refrigerant introduced into the chute at the tail of the second sliding vane 213 is a low-pressure refrigerant when the second cylinder 205 is unloaded, and the refrigerant located in the second pin hole 307 is a low-pressure refrigerant at this time, under the pressure of the high-pressure refrigerant at the bottom of the first pin hole 306, the second pin 214 slides upwards to lock the second sliding vane 213, and the volume-changing cylinder is in an unloading state; when the second cylinder 205 works, the refrigerant introduced into the sliding slot at the tail of the second sliding piece 213 is high-pressure refrigerant, and the refrigerant in the second pin hole 307 is high-pressure refrigerant at this time, so that under the pressure of the second elastic piece 215 at the top of the second pin 214, the second pin 214 slides downwards and retracts into the second pin hole 307 completely, the second sliding piece 213 is unlocked, and the variable-capacity cylinder is in a working state.
In one embodiment, the pump body assembly further includes a second flange 202, a muffler 208, a first roller 209, a first slide 211, a first elastic member 210, a second roller 212, and the second flange 202, the first cylinder 203, the partition 204, the second cylinder 205, the first flange 206, and the lower cover plate 207 are assembled together by screws. The first cylinder 203, the first roller 209, the first slide 211, and the first elastic member 210 together constitute a first compression member, and communicate with the first suction line 104. The second cylinder 205, the second roller 212 and the second vane 213 together constitute a second compression part, which is communicated with the second suction pipe 105.
Referring to fig. 9 in combination, according to an embodiment of the present invention, the compressor assembly includes a compressor, the compressor includes a pump body assembly 102, and the pump body assembly 102 is the pump body assembly described above.
The compressor further comprises a motor assembly 101, wherein the motor assembly 101 is in driving connection with the pump body assembly, and a crankshaft 201 of the pump body assembly is driven to rotate.
In one embodiment, the compressor assembly further comprises a liquid distributor 103, wherein the liquid distributor 103 is communicated with the first suction hole 301 of the pump body assembly 102 through the first suction pipe 104, and the liquid distributor 103 is communicated with the second suction hole 302 of the pump body assembly 102 through the second suction pipe 105.
In one embodiment, where the pump block assembly 102 includes the first pressure switching orifice 304, the compressor assembly further includes the first control circuit 106, the first control circuit 106 being capable of selectively communicating with either the suction line 112 of the dispenser 103 or the discharge line 113 of the compressor.
In this embodiment, the first pressure switching hole 304 is selectively communicated with the suction pipe 112 of the liquid separator 103 through the first solenoid valve 108, and selectively communicated with the discharge pipe 113 of the compressor through the second solenoid valve 109.
In one embodiment, where pump block assembly 102 includes a second pressure switching orifice 305, the compressor assembly further includes a second control circuit 107, the second control circuit 107 being capable of selectively communicating with either the suction line 112 of the dispenser 103 or the discharge line 113 of the compressor.
In this embodiment, the second pressure switching hole 305 is selectively communicated with the suction pipe 112 of the liquid separator 103 through the third solenoid valve 110, and selectively communicated with the discharge pipe 113 of the compressor through the fourth solenoid valve 111.
When the compressor assembly works, low-pressure refrigerant enters the liquid distributor 103 through the air suction pipe 112, enters the pump body assembly 102 through the first air suction pipeline 104 and the second air suction pipeline 105 respectively, and after being compressed, high-pressure refrigerant is discharged out of the compressor through the air discharge pipe 113. By controlling the opening and closing of the first solenoid valve 108 and the second solenoid valve 109, high-pressure gaseous refrigerant or low-pressure gaseous refrigerant can be selectively introduced into the first control circuit 106. By controlling the opening and closing of the third solenoid valve 110 and the fourth solenoid valve 111, high-pressure gaseous refrigerant or low-pressure gaseous refrigerant can be selectively introduced into the second control circuit 107.
Because the bottom of the second pin 214 is always kept at high pressure, and the upper part of the second pin 214 is communicated with the tail part of the second sliding vane 213 to form a closed space, the closed space can be selectively communicated with the suction pipe 112 or the exhaust pipe 113 through the second control circuit 107, and low-pressure gaseous refrigerant or high-pressure gaseous refrigerant can be selectively introduced. When the upper portion of the second pin 214 is depressed, the second pin 214 completely pushes up the second slide 213 and the second compression element is in an unloaded state. When the upper portion of the second pin 214 is under high pressure, the second pin 214 is fully retracted into the second pin hole 307 by the gravity and the second elastic element 215, and the second compression element is in an operating state.
When the second compression element is in the operating mode, the first solenoid valve 108 and the fourth solenoid valve 111 are in an open state, and the second solenoid valve 109 and the third solenoid valve 110 are in a closed state. The first pressure switching hole 304 is communicated with the suction pipe 112 through the first control circuit 106, and both upper and lower sides of the first pin 303 are in a low pressure state, and the first pin is completely retracted into the first pin hole 306 under the action of self gravity, so that low-pressure refrigerant can normally enter the second compression part for compression.
When the second compression part is in the unloading mode, the first solenoid valve 108 and the fourth solenoid valve 111 are in the closed state, and the second solenoid valve 109 and the third solenoid valve 110 are in the open state. The first pressure switching hole 304 is communicated with the exhaust pipe 113 through the first control circuit 106, the lower side of the first pin 303 is high-pressure, and the first pin 303 is lifted upwards to separate the second air cylinder 205 from the liquid distributor 103, so that the refrigerant oil is prevented from leaking into the liquid distributor 103, and the reliability and the energy efficiency of the compressor are improved.
According to an embodiment of the present invention, an air conditioning system includes the pump body assembly or the compressor assembly.
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 exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
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 (15)
1. A pump body assembly, comprising:
a first cylinder (203) having a first air suction hole (301);
a second cylinder (205) which is a variable-displacement cylinder and has a second suction hole (302);
an adjustment structure, arranged in correspondence with the second suction hole (302), configured to be able to close the second suction hole (302) when the second cylinder (205) is unloaded, and to open the second suction hole (302) when the second cylinder (205) is operating.
2. The pump body assembly according to claim 1, wherein the adjusting structure comprises a first pin (303), the second cylinder (205) comprises a first pin hole (306) communicated to the second suction hole (302), the first pin hole (306) is arranged to intersect with the second suction hole (302), the first pin (303) can slide into or out of the second suction hole (302) through the first pin hole (306), the diameter of the first pin hole (306) is D1, the diameter of the second suction hole (302) at the position of the first pin hole (306) is D2, and D1 is greater than or equal to D2.
3. The pump body assembly according to claim 2, characterized in that the pump body assembly further comprises a first flange (206), the first flange (206) is arranged on a side of the second cylinder (205) far away from the first cylinder (203), the first pin hole (306) is formed in a side of the first flange (206) facing the second cylinder (205), the first pin hole (306) in the first flange (206) is arranged corresponding to the first pin hole (306) in the second cylinder (205), and the first pin (303) is slidably arranged in the first pin hole (306) in the first flange (206).
4. The pump body assembly according to claim 3, characterized in that a side of the first pinhole (306) remote from the second suction hole (302) is provided with a first pressure switching hole (304), the first pressure switching hole (304) communicating with the first pinhole (306) and being configured to adjust a tail pressure of the first pin (303) to control the first pinhole (306) to open or close the second suction hole (302).
5. The pump body assembly of claim 4, wherein the first pin hole (306) in the first flange (206) is a blind hole, and the first pressure switching hole (304) is formed in the bottom of the first pin hole (306).
6. The pump body assembly according to claim 4, characterized in that a return structure is provided at the bottom of the first pin hole (306), the return structure being configured to provide a return force to the first pin (303) to open the second suction hole (302).
7. The pump body assembly according to claim 6, wherein the return structure is a tension spring or a magnet (308) disposed at the bottom of the first pin hole (306), and the magnet (308) is provided with a passage communicating the first pressure switching hole (304) and the first pin hole (306).
8. The pump block assembly according to claim 4, characterized in that the first pressure switching hole (304) is a T-shaped hole, the first pressure switching hole (304) penetrates the first flange (206) axially and laterally at the same time, a lower cover plate (207) is arranged on the side of the first flange (206) far away from the second cylinder (205), and the lower cover plate (207) blocks the side of the first pressure switching hole (304) penetrating the first flange (206) axially.
9. The pump body assembly according to any one of claims 3 to 8, characterized in that it further comprises a positive-displacement mechanism, the second cylinder (205) being provided with a sliding slot in which a second slide (213) is arranged, the positive-displacement mechanism being configured to load or unload the second slide (213).
10. The pump body assembly according to claim 9, wherein the positive displacement mechanism includes a second pin (214), a second pin hole (307), and a second elastic member (215), the second pin hole (307) is disposed in the first flange (206), the second pin (214) and the second elastic member (215) are disposed in the second pin hole (307), the second pin hole (307) is configured such that a bottom portion thereof communicates with the high-pressure refrigerant, a top portion thereof communicates with the sliding groove at a rear portion of the second sliding piece (213), the first flange (206) is further provided with a second pressure switching hole (305) for adjusting the in-sliding-groove pressure at a rear portion of the second sliding piece (213), a stopper groove is disposed at a bottom portion of the second sliding piece (213), the second pin (214) can be locked into or released from the stopper groove, and the second elastic member (215) provides the second pin (214) with an elastic force for releasing the stopper groove.
11. A compressor assembly comprising a compressor including a pump body assembly (102), characterized in that the pump body assembly (102) is as claimed in any one of claims 1 to 10.
12. Compressor assembly according to claim 11, characterized in that it further comprises a liquid distributor (103), said liquid distributor (103) communicating with the first suction holes (301) of the pump block assembly (102) through a first suction line (104), said liquid distributor (103) communicating with the second suction holes (302) of the pump block assembly (102) through a second suction line (105).
13. The compressor assembly according to claim 12, wherein when the pump body assembly (102) comprises a first pressure switching orifice (304), the compressor assembly further comprises a first control circuit (106), the first control circuit (106) being selectively communicable with the suction pipe (112) of the liquid separator (103) or with the discharge pipe (113) of the compressor.
14. Compressor assembly according to claim 12, characterized in that when the pump body assembly (102) comprises a second pressure switching orifice (305), the compressor assembly further comprises a second control circuit (107), the second control circuit (107) being able to selectively communicate with the suction pipe (112) of the liquid separator (103) or with the discharge pipe (113) of the compressor.
15. An air conditioning system, characterized in that it comprises a pump body assembly according to any one of claims 1 to 10 or a compressor assembly according to any one of claims 11 to 14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182913.0A CN115467829A (en) | 2022-09-27 | 2022-09-27 | Pump body subassembly, compressor unit spare and air conditioning system |
| PCT/CN2023/090069 WO2024066312A1 (en) | 2022-09-27 | 2023-04-23 | Pump body assembly, compressor assembly, and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211182913.0A CN115467829A (en) | 2022-09-27 | 2022-09-27 | Pump body subassembly, compressor unit spare and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115467829A true CN115467829A (en) | 2022-12-13 |
Family
ID=84335825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211182913.0A Pending CN115467829A (en) | 2022-09-27 | 2022-09-27 | Pump body subassembly, compressor unit spare and air conditioning system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115467829A (en) |
| WO (1) | WO2024066312A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066312A1 (en) * | 2022-09-27 | 2024-04-04 | 珠海格力电器股份有限公司 | Pump body assembly, compressor assembly, and air conditioning system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4663978B2 (en) * | 2003-12-11 | 2011-04-06 | 東芝キヤリア株式会社 | Refrigeration cycle equipment |
| CN103244412B (en) * | 2012-02-06 | 2015-10-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-rotor variable-volume compressor |
| CN103486032B (en) * | 2012-06-14 | 2015-11-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage variable capacity compressor and air conditioner |
| CN105443382B (en) * | 2014-06-09 | 2018-02-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner |
| CN105570138B (en) * | 2016-02-02 | 2019-04-26 | 广东美芝制冷设备有限公司 | Capacity variable type compressor and refrigerating plant with it |
| CN105570134B (en) * | 2016-02-02 | 2019-04-26 | 广东美芝制冷设备有限公司 | Capacity variable type compressor and refrigerating plant with it |
| CN105570133B (en) * | 2016-02-02 | 2019-04-26 | 广东美芝制冷设备有限公司 | Capacity variable type compressor and refrigerating plant with it |
| CN218376877U (en) * | 2022-09-27 | 2023-01-24 | 珠海格力电器股份有限公司 | Pump body subassembly, compressor unit spare and air conditioning system |
| CN115467829A (en) * | 2022-09-27 | 2022-12-13 | 珠海格力电器股份有限公司 | Pump body subassembly, compressor unit spare and air conditioning system |
-
2022
- 2022-09-27 CN CN202211182913.0A patent/CN115467829A/en active Pending
-
2023
- 2023-04-23 WO PCT/CN2023/090069 patent/WO2024066312A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066312A1 (en) * | 2022-09-27 | 2024-04-04 | 珠海格力电器股份有限公司 | Pump body assembly, compressor assembly, and air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024066312A1 (en) | 2024-04-04 |
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