CN109058106B - Pump body assembly, compressor and dual-temperature air conditioning system - Google Patents
Pump body assembly, compressor and dual-temperature air conditioning system Download PDFInfo
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- CN109058106B CN109058106B CN201811070557.7A CN201811070557A CN109058106B CN 109058106 B CN109058106 B CN 109058106B CN 201811070557 A CN201811070557 A CN 201811070557A CN 109058106 B CN109058106 B CN 109058106B
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- cavity
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 59
- 238000007906 compression Methods 0.000 claims abstract description 49
- 230000006835 compression Effects 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F04C18/3562—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 the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
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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
-
- 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a pump body assembly, a compressor and a dual-temperature air conditioning system, which overcome the technical defect that the volume and cost of the compressor can be increased in a mode of increasing the displacement of a single air cylinder in the prior art, and adopts the following technical scheme: the pump body assembly includes: the device comprises a cylinder assembly, an eccentric rotating assembly and a sliding vane assembly, wherein a sliding vane accommodating cavity is formed in the inner cavity wall of the cylinder assembly, a second air suction port is additionally formed in the side wall of the sliding vane, which faces the low-pressure cavity, a second air exhaust port communicated with the sliding vane accommodating cavity is formed in the cylinder assembly, and an exhaust valve assembly is arranged at the second air exhaust port. Through above-mentioned second induction port and carry out seal design to current gleitbretter groove, can be on original cylinder structure, the spatial structure in former gleitbretter groove of make full use of has additionally increased compression volume, has improved the effective volume and the efficiency of the pump body, and new compression chamber simple structure reliability is good.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a pump body assembly, a compressor and a dual-temperature air conditioning system.
Background
The rotary compressor is widely applied to household room air conditioners due to good refrigeration performance, small volume, simple structure and high reliability, and the air conditioners with high performance, low noise, safety and electricity saving are increasingly popular with people along with the progress of technology and continuous rising of energy prices. A significant portion of the improvement in air conditioner efficiency is in the compressor. The improvement of compressor efficiency and the production of high efficiency compressors has become one of the main means of product competition for all compressor manufacturers at present.
The existing rotary compressor mainly comprises a shell, a pump body assembly, a motor assembly and an oil pool. A stator cavity is formed between a stator of the motor assembly, the shell and the pump body assembly, wherein the upper space of the stator is a motor upper cavity, and the lower space of the stator is a motor lower cavity. The pump body assembly mainly comprises a cylinder, a crankshaft, rollers and a sliding vane assembly. The upper end and the lower end of the cylinder are respectively provided with an upper flange and a lower flange which form a closed volume in the cylinder, the sliding vane assembly is limited in a sliding vane groove on the wall of the cylinder, the roller rotates in the cylinder cavity along the cavity wall of the cylinder, the sliding vane is tightly attached to the roller under the action of the spring so as to divide the cylinder cavity into an air suction cavity and a compression cavity, and the sliding vane moves in a straight reciprocating mode along with the rotation of the roller, so that the rotary compressor completes the air suction, compression and exhaust process.
The prior art compressor pump body, whether it be a single cylinder compressor or a multi-cylinder compressor, typically has only one compression chamber per cylinder, and if it is desired to increase the displacement of a single cylinder, it is desired to increase the cylinder height of the cylinder or to increase the amount of eccentricity, or to further increase one or more cylinders. This results in a large structural variation, which increases the volume of the compressor and wastes costs.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the technical defect that the volume and cost of the compressor are increased by adopting a mode of increasing the displacement of a single air cylinder in the prior art, so as to provide a pump body assembly, the compressor and a dual-temperature air conditioning system.
In order to achieve the above object, the present invention adopts the technical scheme that:
a pump body assembly having an additional compression chamber, comprising: the cylinder assembly is provided with an inner cavity, and a sliding vane accommodating cavity is formed in the inner wall of the inner cavity; the eccentric rotating assembly is arranged in the inner cavity; the sliding vane assembly is arranged in the sliding vane accommodating cavity and comprises a sliding vane with the head part kept in contact with the eccentric rotating part, and the sliding vane divides the inner cavity into a high-pressure cavity with an exhaust port and a low-pressure cavity with an air suction port; a second air suction port is additionally arranged on the side wall of the sliding vane facing the low-pressure cavity; the cylinder assembly is provided with a second exhaust port communicated with the sliding vane accommodating cavity, and an exhaust valve assembly is arranged at the second exhaust port; when the sliding vane extends out of the sliding vane accommodating cavity to the position where the second air suction port is partially exposed, the second air suction port communicates the low-pressure cavity with the sliding vane accommodating cavity; when the eccentric rotating assembly drives the sliding vane to retract to the position that the second air suction port is completely positioned in the sliding vane accommodating cavity, the communication between the low-pressure cavity and the sliding vane accommodating cavity is cut off, the second air suction port, the sliding vane accommodating cavity and the second air exhaust port form an additional compression cavity, and low-pressure gas in the sliding vane accommodating cavity is compressed along with the continuous retraction of the sliding vane to form high-pressure gas until reaching the drainage pressure for opening the exhaust valve assembly, and is exhausted through the second air exhaust port.
The cylinder assembly includes: the inner wall of the cylinder is provided with a sliding vane groove with a closed tail end; the first end sealing piece and the second end sealing piece are arranged at two axial ends of the air cylinder, and the inner cavity is defined by the first end sealing piece and the air cylinder, and the sliding piece accommodating cavity is defined by the first end sealing piece and the sliding piece groove.
The second exhaust port comprises a first through hole arranged on the upper end face of the cylinder at the upper end of the sliding vane accommodating cavity.
The high pressure chamber side exhaust port is disposed on the first end seal.
The slider assembly further comprises: and the elastic piece is arranged in the sliding piece accommodating cavity, and the biasing force of the elastic piece acts on the sliding piece to enable the sliding piece to keep contact with the outer circumferential surface of the eccentric rotating part.
The slip sheet includes: the sliding vane body, sliding vane body afterbody is equipped with spacing portion, the flexible free end of elastic component with spacing portion connects.
The limiting part is a groove, and the telescopic free end of the elastic piece is arranged in the groove.
The tail end of the second air suction port is communicated with the groove.
The second air suction port is a strip-shaped long groove which is arranged along the extending or retracting direction of the sliding sheet in the length direction.
Setting the eccentric amount of the eccentric rotating assembly as e, setting the distance between the head of the second air suction port and the head of the sliding blade as X, and when the sliding blade stretches out of the sliding blade accommodating cavity to be longest, setting the dimension of the second air suction port, which is exposed out of the sliding blade accommodating cavity side, along the extending or retracting direction of the sliding blade as H, wherein H=2e-X.
The value range of H is 0.1-0.2 mm.
The air suction port is arranged on the inner cavity wall of the air cylinder.
The eccentric rotation assembly includes: a crankshaft extending through the cylinder assembly and having an eccentric portion thereon; the roller is sleeved on the eccentric part.
The sliding vane accommodating cavity comprises a through cavity formed on the air cylinder, and a blocking structure arranged at the tail end of the through cavity, which is far away from the center of the air cylinder, and used for blocking the tail end of the through cavity.
The blocking structure comprises a screw.
The invention also provides a compressor comprising the pump body assembly.
The invention also provides a dual-temperature air conditioning system, which comprises a first air conditioning system, a second air conditioning system and the compressor, wherein the exhaust port arrangement pipeline assembly forms a main exhaust port of the compressor, and the second exhaust port arrangement pipeline assembly forms an auxiliary exhaust port of the compressor; the main exhaust port is communicated with the air inlet end of the first air conditioning system, the auxiliary exhaust port is communicated with the air inlet end of the second air conditioning system, and the air return port end of the first air conditioning system and the air return port end of the second air conditioning system are communicated with the air return pipeline of the compressor.
The air inlet ends of the first air conditioning system and the second air conditioning system are both air inlets of the condenser; and a liquid separator is arranged on the return air pipeline of the compressor.
The technical scheme of the invention has the following advantages:
1. the invention provides a pump body assembly, comprising: the cylinder assembly is provided with an inner cavity, and a sliding vane accommodating cavity is formed in the inner wall of the inner cavity; the eccentric rotating assembly is arranged in the inner cavity; the sliding vane assembly is arranged in the sliding vane accommodating cavity and comprises a sliding vane with the head part kept in contact with the eccentric rotating part, and the sliding vane divides the inner cavity into a high-pressure cavity with an exhaust port and a low-pressure cavity with an air suction port; a second air suction port is additionally arranged on the side wall of the sliding vane facing the low-pressure cavity; the cylinder assembly is provided with a second exhaust port communicated with the sliding vane accommodating cavity, and an exhaust valve assembly is arranged at the second exhaust port; when the sliding vane extends out of the sliding vane accommodating cavity to the position where the second air suction port is partially exposed, the second air suction port communicates the low-pressure cavity with the sliding vane accommodating cavity; when the eccentric rotating assembly drives the sliding vane to retract to the position that the second air suction port is completely positioned in the sliding vane accommodating cavity, the communication between the low-pressure cavity and the sliding vane accommodating cavity is cut off, the second air suction port, the sliding vane accommodating cavity and the second air exhaust port form an additional compression cavity, and low-pressure gas in the sliding vane accommodating cavity is compressed along with the continuous retraction of the sliding vane to form high-pressure gas until reaching the drainage pressure for opening the exhaust valve assembly, and is exhausted through the second air exhaust port.
The above-mentioned is the core technical scheme of the invention, through carrying on the sealed design to the gleitbretter groove in the prior art, adopt the gleitbretter holding chamber to form a new independent additional compression chamber, and set up the second suction port in the gleitbretter towards one side of the low-pressure chamber in a matched way, as the suction channel that can communicate low-pressure chamber with additional compression chamber. When the sliding vane extends out far enough, the second air suction port on the sliding vane is exposed out of the sliding vane accommodating cavity to communicate the low pressure cavity with the additional compression cavity, and air enters the additional compression cavity through the second air suction port. Along with the retraction of the sliding vane, the second air suction port is gradually closed, the sliding vane continues to retract to compress the air in the additional compression cavity with the formed closed structure to form high-pressure air, and when the pressure reaches the discharge pressure of the exhaust valve assembly, the high-pressure air is discharged from the second air discharge port, so that a compression process is completed. Through above-mentioned second induction port and to gleitbretter accommodation chamber seal design, can be on original cylinder structure, the spatial structure in former gleitbretter accommodation chamber of make full use of, additionally increased compression volume, improved the effective volume and the efficiency of the pump body, and new compression chamber simple structure reliability is good.
2. According to the pump body assembly provided by the invention, the eccentric amount of the eccentric rotating assembly is set as e, the distance between the head of the second air suction port and the head of the sliding vane is set as X, when the sliding vane extends out of the sliding vane accommodating cavity to the longest extent, the dimension of the second air suction port, which is exposed out of the sliding vane accommodating cavity side, along the extending or retracting direction of the sliding vane is set as H, and H=2e-X is met. The value range of H is 0.1-0.2 mm. The second air suction port gradually exposes the sliding vane accommodating cavity along with the action that the sliding vane extends out of the sliding vane accommodating cavity, the size of the exposed sliding vane accommodating cavity cannot be too large or too small, and the exposed size range of the second air suction port needs to be reasonably set.
3. The invention provides a pump body assembly, wherein a sliding vane accommodating cavity comprises a through cavity formed on a cylinder and a blocking structure arranged at the tail end of the through cavity, which is far away from the center of the cylinder, and used for blocking the tail end of the through cavity. The blocking structure comprises a screw. The plugging structure can be integrally formed with the air cylinder, and can be installed at the tail end of the sliding vane accommodating cavity by using screws during assembly.
4. The compressor provided by the invention comprises the pump body assembly, and has all the advantages of the pump body assembly.
5. The invention provides a dual-temperature air conditioning system, which comprises a first air conditioning system and a second air conditioning system, and further comprises the compressor, wherein the exhaust port arrangement pipeline assembly forms a main exhaust port of the compressor, the second exhaust port arrangement pipeline assembly forms an auxiliary exhaust port of the compressor, the main exhaust port is communicated with an air inlet end of the first air conditioning system, the auxiliary exhaust port is communicated with an air inlet end of the second air conditioning system, and an air return port end of the first air conditioning system and an air return port end of the second air conditioning system are communicated with an air return pipeline of the compressor. The existing compressor only has the function of outputting one air suction parameter and one air discharge parameter, if a plurality of air suction parameters or air discharge parameters are required to be output, a plurality of compressors are required to be combined for realizing, the cost performance is low, and meanwhile, the requirement on the installation space is high. The invention ensures that one compressor has the function of single suction and double discharge, and can effectively replace the prior double-temperature air conditioning system with double discharge parameters which can be driven by two compressors.
In summary, the space of the sliding vane groove of the air cylinder is utilized to assist the upper end sealing piece, the lower end sealing piece and the sealing structure to construct an independent additional compression cavity, and the additional compression cavity can be communicated with or disconnected from the low-pressure cavity along with the sliding vane sliding action through the second air suction port arranged on the low-pressure cavity side of the sliding vane, so that the independent air suction, compression and exhaust process is realized. According to the invention, independent exhaust from the added second exhaust pipe is realized, the function of driving one set of independent air conditioning system in the dual-temperature air conditioning system is realized, and the energy efficiency of the pump body is improved.
The present invention will be described in detail with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a pump body assembly according to embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of the pump body assembly of FIG. 1 taken along the radial direction of the cylinder (the plugging structure is not shown);
FIG. 3 is a schematic cross-sectional view of a pump body assembly according to embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of a gas circuit of a conventional dual temperature control air conditioning system;
FIG. 5 is a schematic diagram of the air path of the dual temperature control air conditioning system according to embodiment 2 of the present invention;
reference numerals illustrate:
1-a cylinder; 11-a slide receiving cavity; 111-a second exhaust port; 112-exhaust port; 113-a third exhaust port; 12-air suction port; 13-a high pressure chamber; 14-a low pressure chamber; 15-a first end seal; 16-a second end seal; 2-a crankshaft; 31-sliding sheets; 311-a second suction port; 32-an elastic member; 4-a roller; 5-a muffler; 6-a plugging structure; 7-an exhaust valve assembly; 8-a compressor; 81-a main exhaust port; 82-a secondary exhaust port; 9-a first air conditioning system; 10-a second air conditioning system.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Examples
A compressor is described that includes a pump body assembly having an additional compression chamber. The pump body component can be single-cylinder, double-cylinder or multi-cylinder.
As shown in fig. 1 to 3, the pump body assembly with the additional compression chamber in this embodiment includes: the cylinder assembly is provided with an inner cavity, and a sliding vane accommodating cavity is formed in the inner wall of the inner cavity; the eccentric rotating assembly is arranged in the inner cavity; the sliding vane assembly is arranged in the sliding vane accommodating cavity and comprises a sliding vane 31 with the head part kept in contact with the eccentric rotating part, and the sliding vane 31 divides the inner cavity into a high-pressure cavity 13 with an exhaust port 112 and a low-pressure cavity 14 with an air suction port 12; a second air suction port 311 is additionally arranged on the side wall of the sliding vane 31 facing the low-pressure cavity 14; the cylinder assembly is provided with a second exhaust port 111 communicated with the sliding vane accommodating cavity, and an exhaust valve assembly 7 is arranged at the second exhaust port 111. On the basis of the structure, when the sliding vane 31 extends out of the sliding vane accommodating cavity to the second air suction port 311 is partially exposed, the second air suction port 311 communicates the low-pressure cavity 14 with the sliding vane accommodating cavity; when the eccentric rotating assembly drives the sliding vane 31 to retract until the second air suction port 311 is completely positioned in the sliding vane accommodating cavity, the communication between the low-pressure cavity 14 and the sliding vane accommodating cavity is cut off, the second air suction port 311, the sliding vane accommodating cavity and the second air exhaust port 111 form a closed additional compression cavity, low-pressure gas in the sliding vane accommodating cavity is compressed along with the continuous retraction of the sliding vane 31 to form high-pressure gas, and the compressed high-pressure gas is exhausted through the second air exhaust port 111 until the pressure of the high-pressure gas reaches the exhaust pressure for opening the exhaust valve assembly 7.
By sealing the sliding vane groove in the prior art, a new independent additional compression cavity is formed by adopting the sliding vane accommodating cavity, and a special second air suction port 311 is formed on one side of the sliding vane 31 facing the low pressure cavity 14 in a matching way and is used as an air suction channel capable of communicating the sliding vane accommodating cavity with the low pressure cavity 14. In a specific operation, when the slide sheet 31 extends far enough, the second air suction port on the slide sheet 31 starts to gradually expose the slide sheet accommodating cavity, so that the low pressure cavity 14 is communicated with the additional compression cavity, and the air in the low pressure cavity 14 enters the additional compression cavity through the second air suction port 311. Along with the rotation of the eccentric rotation component, the sliding vane 31 gradually retracts, and the second air suction port 311 also gradually retracts into the sliding vane accommodating cavity until the sliding vane accommodating cavity side is completely closed. When the sliding vane continues to retract, the gas in the additional compression cavity with the formed closed structure is compressed to form high-pressure gas, and when the pressure reaches the discharge pressure of the exhaust valve assembly 7, the high-pressure gas is discharged from the second exhaust port, so that a compression process is completed.
In this embodiment, as shown in fig. 1, the cylinder assembly further includes: the inner wall of the cylinder 1 is provided with a sliding vane groove 11 with a closed tail end; the first end seals 15 and the second end seals 16 are disposed at two axial ends of the cylinder 1, and define the inner cavity with the cylinder 1, and define the slide accommodating cavity with the slide groove 11. The sliding vane accommodating cavity can also be formed by a strip-shaped blind hole which is directly formed on the wall of the air cylinder 1 and is radially formed along the air cylinder, and the sliding vane is arranged in the strip-shaped blind hole to slide. The first end seal 15 in this embodiment is referred to as an upper flange and the second end seal 16 is referred to as a lower flange.
As shown in fig. 3, the pump body assembly in this embodiment further includes a muffler 5 disposed above the first end seal 15. The second exhaust port 111 includes a first through hole formed in the cylinder 1 at the upper end of the slide receiving cavity, a second communication hole formed in the disk portion of the first end seal 5 in the axial direction, and a third exhaust port 13 formed in the first end seal 5 in the radial direction, where the first through hole and the second through hole may be coaxially disposed or may be different from each other, and in this embodiment, the slide receiving cavity is preferably coaxially disposed, and the first through hole, the second through hole, and the third exhaust port 13 are sequentially communicated with the outside of the pump body. A counter bore is arranged on the upper end face of the first end sealing piece 5 and located at the second communication hole, the mounting part of the silencer 5 is buckled on the counter bore to form a cavity, and the third exhaust port 13 is communicated with the second communication hole through the cavity.
An exhaust port 112 on the high-pressure chamber 13 side is also provided on the first end seal 15.
As another embodiment, the second exhaust port 111 may also be directly disposed on the cylinder 1, for example, the tail end of the sliding vane groove 11 is set as the second exhaust port 111, specifically, the tail end of the sliding vane groove 11 may be made into a stepped hole structure, the elastic member is disposed on the step of the stepped hole to limit, and the tail end of the stepped hole is provided with the exhaust valve assembly. The exhaust valve assembly 7 includes a valve plate baffle and a valve plate disposed on the first end seal 15 or the cylinder 1 by rivets.
As shown in fig. 1, the second suction port 311 is a long, elongated slot provided in the longitudinal direction along the extending or retracting direction of the slide 31. When designing the maximum length of the second air suction port 311 exposing the slide receiving chamber side, first, setting the dimension of the second air suction port 311 exposing the slide receiving chamber side along the extending or retracting direction of the slide 31 as H when the slide 31 extends out of the slide receiving chamber to the longest, and setting the eccentric amount of the eccentric rotation assembly as e, and setting the distance between the head of the second air suction port 311 and the head of the slide 31 as X, h=2e-X. According to the actual operation requirement, the value range of H can be set to be 0.1-0.2 mm. The size of H cannot be too large or too small, and the exposed size range needs to be set reasonably.
On the basis of the above, the process of the second suction port 311 from the about-to-extend slider accommodating chamber to the about-to-fully-retract slider accommodating chamber will be described in further detail. The eccentric rotating assembly is used for completely compressing the sliding vane to the sliding vane accommodating cavity as a rotating origin, when the eccentric rotating assembly rotates to 128 degrees from the origin, the second air suction port 311 starts to extend out of the sliding vane accommodating cavity, and the 128-degree rotating angle of the eccentric rotating assembly is the opening angle of the air suction channel. When the eccentric rotating assembly continues to rotate to 180 degrees, the distance that the sliding vane 31 extends out of the sliding vane accommodating cavity is longest, the distance that the second air suction port 311 exposes out of the sliding vane accommodating cavity is also longest, the size is preferably between 0.1 and 0.2mm, and the specific size is determined according to design requirements. When the eccentric rotating component continues to rotate, the sliding vane starts to retract, so that the distance of the second air suction port exposing the sliding vane accommodating cavity is gradually reduced, and when the eccentric rotating component continues to rotate to 232 degrees, the second air suction port 311 is closed, and the 232-degree corner of the eccentric rotating component is the closing angle of the air suction channel. Thus, the suction angle range of the slide receiving chamber can be calculated to be α=232° -128 ° =104°. The above is merely a distance to illustrate the suction angle of the second suction passage, and is not limited thereto, and the opening angle and the closing angle of the suction passage may be changed according to design requirements.
As shown in fig. 2, the slide groove 11 includes a through cavity formed in the cylinder 1, and a blocking structure 6 provided at a tail end of the through cavity away from a center of the cylinder 1 for blocking the tail end of the through cavity. The plugging structure 6 may be a screw, or may be other structures capable of sealing the tail end of the sliding vane groove, for example, a sealing steel plate fixed at the tail end of the sliding vane groove, etc. In this embodiment, the screw is preferably used for sealing, so that the workability of the sliding vane groove is guaranteed, and the screw is screwed into the cylinder after the elastic element is assembled, so that the tail of the new compression cavity is sealed, and the installation is convenient and operable. In addition, the upper end face and the lower end face of the sliding vane groove are subjected to finish machining treatment and are matched and sealed with the upper flange and the lower flange.
In this embodiment, the sliding vane assembly further includes: the elastic member 32 is disposed in the slide accommodating chamber, and the biasing force thereof acts on the slide 31 to keep the slide 31 in contact with the outer circumferential surface of the eccentric rotation portion. The elastic member 32 is a compression spring or a pagoda spring. The present embodiment is preferably a compression spring.
In the present embodiment, the slide 31 includes: the gleitbretter body, gleitbretter body afterbody is equipped with spacing portion, and the flexible free end and the spacing portion of elastic component 32 are connected. The limiting part is a groove, and the telescopic free end of the elastic piece 32 is arranged in the groove. The position and connection of the slide body and the elastic member 32 can be more firmly positioned. As shown in fig. 1, the tail end of the second air suction port 311 is communicated with the groove.
In the present embodiment, the suction port 12 is provided on the inner cavity wall of the cylinder 1. The eccentric rotation assembly includes: a crankshaft 2, wherein the crankshaft 2 penetrates through the cylinder assembly, and the crankshaft 2 is provided with an eccentric part; the roller 4, the roller 4 is sleeved on the eccentric part.
The working process of the pump body component with the additional compression cavity is as follows:
when the sliding vane 31 extends out of the sliding vane accommodating cavity to the second air suction port 311 gradually exposes, the second air suction port 311 gradually communicates the low pressure cavity 14 with the sliding vane accommodating cavity; when the eccentric rotating assembly drives the sliding vane 31 to retract until the second air suction port 311 is completely positioned in the sliding vane accommodating cavity, the communication between the low-pressure cavity 14 and the sliding vane accommodating cavity is cut off, the second air suction port 311, the sliding vane accommodating cavity and the second air exhaust port 111 form a closed additional compression cavity, low-pressure gas in the sliding vane accommodating cavity is compressed along with the continuous retraction of the sliding vane 31 to form high-pressure gas until the pressure of the high-pressure gas reaches the drainage pressure for opening the exhaust valve assembly 7, and the compressed high-pressure gas is exhausted through the second air exhaust port 111, so as to finish a compression process.
Example 2
As shown in fig. 5, the present embodiment provides a dual temperature air conditioning system, including a first air conditioning system 9 and a second air conditioning system 10, and further including the compressor 8 of embodiment 1, the exhaust port 112 is provided with a pipeline assembly to form a main exhaust port 81 of the compressor, and the second exhaust port 111 is provided with a pipeline assembly to form a sub exhaust port 82 of the compressor; the main exhaust port 81 is communicated with the air inlet end of the first air conditioning system 9, the auxiliary exhaust port 82 is communicated with the air inlet end of the second air conditioning system 9, and the air return port end of the first air conditioning system 9 and the air return port end of the second air conditioning system 10 are both communicated with the air return pipeline of the compressor.
Wherein, the air inlet ends of the first air conditioning system 9 and the second air conditioning system 10 are both air inlets of the condenser. In this embodiment, the main exhaust port 81 is connected to the first exhaust passage of the first air conditioning system 9 via the condenser in the first air conditioning system 9, and the sub-exhaust port 82 is connected to the second exhaust passage of the second air conditioning system 10 via the condenser in the second air conditioning system.
Meanwhile, a liquid separator is arranged on the return air pipeline of the compressor. The first exhaust passage and the second exhaust passage are converged on an air return pipeline at the inlet of the liquid separator, and the two sets of air conditioning systems share the compressor liquid separator.
In operation of the air conditioning system of the present embodiment, the compressed air discharged from the main air outlet 81 enters the first air outlet passage of the first air conditioning system 9, and the compressed air discharged from the sub air outlet 82 enters the second air outlet passage of the second air conditioning system 10.
In the dual-temperature air conditioning system provided by the embodiment, the original air suction and exhaust functions of the compressor are unchanged, the other path of exhaust is kept to be exhausted from the exhaust pipe at the upper end of the shell after passing through the shell, and the exhaust pipe is connected with the second loop of the refrigerating system to form a second exhaust passage.
The existing compressor only has the function of outputting one air suction parameter and one air discharge parameter, if a plurality of air suction parameters or air discharge parameters are required to be output, a plurality of compressors are required to be combined for realizing, as shown in fig. 4, in the prior art, a double-temperature air conditioning system is adopted, two groups of air conditioning systems are independent from each other and are respectively realized by two groups of compressors, and the cost performance is low and meanwhile, the requirement on the installation space is high. The invention ensures that one compressor has the function of single suction and double discharge, and can effectively replace the prior double-temperature air conditioning system with double discharge parameters which can be driven by two compressors.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (18)
1. A pump body assembly having an additional compression chamber, comprising:
the cylinder assembly is provided with an inner cavity, and a sliding vane accommodating cavity is formed in the inner wall of the inner cavity;
the eccentric rotating assembly is arranged in the inner cavity;
the sliding vane assembly is arranged in the sliding vane accommodating cavity and comprises a sliding vane (31) with the head part kept in contact with the eccentric rotating part, and the sliding vane (31) divides the inner cavity into a high-pressure cavity (13) with an exhaust port (112) and a low-pressure cavity (14) with an air suction port (12);
a second air suction port (311) is additionally arranged on the side wall of the sliding sheet (31) facing the low-pressure cavity (14);
the cylinder assembly is provided with a second exhaust port (111) communicated with the sliding vane accommodating cavity, and an exhaust valve assembly (7) is arranged at the second exhaust port (111);
when the sliding vane (31) extends out of the sliding vane accommodating cavity to the second air suction port (311) is partially exposed, the second air suction port (311) communicates the low-pressure cavity (14) with the sliding vane accommodating cavity; when the eccentric rotating assembly drives the sliding vane (31) to retract to the position that the second air suction port (311) is completely positioned in the sliding vane accommodating cavity, the communication between the low-pressure cavity (14) and the sliding vane accommodating cavity is cut off, the second air suction port (311), the sliding vane accommodating cavity and the second air exhaust port (111) form an additional compression cavity, and low-pressure gas in the sliding vane accommodating cavity is compressed along with the continuous retraction of the sliding vane (31) to form high-pressure gas until reaching the drainage pressure for opening the exhaust valve assembly (7), and is exhausted through the second air exhaust port (111).
2. The pump body assembly with additional compression chambers of claim 1, wherein the cylinder assembly comprises:
the inner wall of the cylinder (1) is provided with a sliding vane groove (11) with a closed tail end;
the first end sealing piece (15) and the second end sealing piece (16) are arranged at two axial ends of the air cylinder (1), and the inner cavity is defined by the first end sealing piece and the air cylinder (1), and the sliding piece accommodating cavity is defined by the first end sealing piece and the second end sealing piece and the sliding piece groove (11).
3. Pump body assembly with additional compression chambers according to claim 2, characterized in that the second exhaust port (111) comprises a first through hole provided in the cylinder upper end face of the slide receiving chamber upper end.
4. Pump body assembly with additional compression chambers according to claim 2, characterized in that the high pressure chamber (13) side exhaust port (112) is provided on the first end seal.
5. The pump body assembly with additional compression chambers of claim 1, wherein the slide assembly further comprises:
and the elastic piece (32) is arranged in the sliding piece accommodating cavity, and the biasing force of the elastic piece acts on the sliding piece (31) to enable the sliding piece (31) to keep contact with the outer circumferential surface of the eccentric rotating part.
6. Pump body assembly with additional compression chambers according to claim 5, characterized in that the slide (31) comprises: the sliding vane body, sliding vane body afterbody is equipped with spacing portion, flexible free end of elastic component (32) with spacing portion connects.
7. Pump body assembly with additional compression chambers according to claim 6, characterized in that the limit stop is a groove in which the telescopic free end of the elastic element (32) is arranged.
8. Pump body assembly with additional compression chamber according to claim 7, characterized in that the tail end of the second suction opening (311) communicates with the recess.
9. Pump body assembly with additional compression chambers according to any of claims 1-8, characterized in that the second suction opening (311) is a strip-like elongated slot arranged lengthwise along the extension or retraction direction of the slide (31).
10. Pump body assembly with additional compression chamber according to claim 9, characterized in that the eccentric amount of the eccentric rotation assembly is set as e, the distance between the head of the second suction port (311) and the head of the slide (31) is X, when the slide (31) protrudes out of the slide receiving chamber to the longest extent, the dimension of the second suction port (311) exposing the slide receiving chamber side in the extending or retracting direction of the slide (31) is H, H = 2e-X.
11. The pump body assembly with additional compression chambers of claim 10, wherein H has a value in the range of 0.1-0.2 mm.
12. Pump body assembly with additional compression chambers according to claim 2, characterized in that the suction opening (12) is provided on the inner wall of the cylinder (1).
13. The pump body assembly with additional compression chambers of claim 1, wherein the eccentric rotation assembly comprises:
-a crankshaft (2), said crankshaft (2) extending through said cylinder assembly, and said crankshaft (2) having an eccentric portion thereon;
and the roller (4) is sleeved on the eccentric part.
14. Pump body assembly with additional compression chambers according to claim 2, characterized in that the slide groove (11) comprises a through chamber formed on the cylinder (1) and a blocking structure (6) arranged at the end of the through chamber remote from the centre of the cylinder (1) for blocking the end of the through chamber.
15. Pump body assembly with additional compression chambers according to claim 14, characterized in that the blocking structure (6) comprises a screw.
16. Compressor, characterized in that it comprises a pump body assembly according to any one of claims 1-15.
17. A dual temperature air conditioning system comprising a first air conditioning system (9) and a second air conditioning system (10), characterized in that it further comprises a compressor (8) according to claim 16, said exhaust port (112) being provided with a pipe assembly forming a main exhaust port (81) of said compressor, said second exhaust port (111) being provided with a pipe assembly forming a secondary exhaust port (82) of said compressor; the main exhaust port (81) is communicated with the air inlet end of the first air conditioning system (9), the auxiliary exhaust port (82) is communicated with the air inlet end of the second air conditioning system (9), and the air return port end of the first air conditioning system (9) and the air return port end of the second air conditioning system (10) are both communicated with the air return pipeline of the compressor.
18. The dual temperature air conditioning system according to claim 17, characterized in that the air inlet ends of the first air conditioning system (9) and the second air conditioning system (10) each refer to an air inlet of a condenser; and a liquid separator is arranged on the return air pipeline of the compressor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070557.7A CN109058106B (en) | 2018-09-13 | 2018-09-13 | Pump body assembly, compressor and dual-temperature air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811070557.7A CN109058106B (en) | 2018-09-13 | 2018-09-13 | Pump body assembly, compressor and dual-temperature air conditioning system |
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| CN109058106A CN109058106A (en) | 2018-12-21 |
| CN109058106B true CN109058106B (en) | 2023-12-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110985384B (en) * | 2019-11-29 | 2023-11-17 | 安徽美芝精密制造有限公司 | Compressor and refrigeration equipment |
| CN112343818B (en) * | 2020-11-13 | 2021-10-15 | 珠海格力电器股份有限公司 | Pump body structure and air conditioner |
| CN114087180A (en) * | 2021-12-08 | 2022-02-25 | 珠海格力电器股份有限公司 | Pump body subassembly, compressor, air conditioner |
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