CN112145421A - Compressor, air conditioner outdoor unit, air conditioning system and assembling method of compression unit - Google Patents

Compressor, air conditioner outdoor unit, air conditioning system and assembling method of compression unit Download PDF

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Publication number
CN112145421A
CN112145421A CN201910590233.4A CN201910590233A CN112145421A CN 112145421 A CN112145421 A CN 112145421A CN 201910590233 A CN201910590233 A CN 201910590233A CN 112145421 A CN112145421 A CN 112145421A
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CN
China
Prior art keywords
eccentric
cylinder
shaft
crankshaft
compressor
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Pending
Application number
CN201910590233.4A
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Chinese (zh)
Inventor
陆元嘉
邵达林
袁浩
毛开智
楼海琳
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Shanghai Highly Electrical Appliances Co Ltd
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Shanghai Highly Electrical Appliances Co Ltd
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Application filed by Shanghai Highly Electrical Appliances Co Ltd filed Critical Shanghai Highly Electrical Appliances Co Ltd
Priority to CN201910590233.4A priority Critical patent/CN112145421A/en
Publication of CN112145421A publication Critical patent/CN112145421A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods

Abstract

The application provides a compressor, an air conditioner indoor unit, an air conditioning system and an assembling method of a compression unit, wherein the compressor comprises a shell and the compression unit, and the compression unit is arranged in a closed space defined in the shell; the compression unit comprises at least two cylinders, a crankshaft and at least two pistons, a partition plate is arranged between every two adjacent cylinders, at least two eccentric parts are arranged on the crankshaft, one eccentric part is arranged in each cylinder, and each piston is correspondingly sleeved on one eccentric part; and, an outer diameter d of each of the eccentric portionsDeflectionAn eccentric amount e of each eccentric portion and a diameter d of the main shaftShaft 1The following relationship is satisfied: e.g. of the type>(dDeflection‑dShaft 1) By increasing said biasThe heart volume is used to realize a large displacement of the compressor within the small size limit of the casing.

Description

Compressor, air conditioner outdoor unit, air conditioning system and assembling method of compression unit
Technical Field
The invention relates to the technical field of compressors, in particular to a compressor, an air conditioner outdoor unit, an air conditioning system and an assembling method of a compression unit.
Background
A compressor is a fluid mechanical device that compresses a low-pressure refrigerant into a high-pressure refrigerant, which is the heart of a refrigeration system. The compressor may be classified into a rotary compressor, a scroll compressor, a reciprocating compressor, etc. according to a difference of a compression mechanism. Among them, the rotor type compressor is widely used in various air conditioners and refrigerators due to its advantages of simple structure, high reliability, etc.
Since the demand for cooling power of air conditioners and refrigerators is becoming higher, the increase in cooling power requires an increase in the displacement of the compressor. However, the conventional rotary compressor generally increases the displacement by increasing the height of the cylinder due to size limitation, but the high height of the cylinder affects the energy efficiency of the compressor according to efficiency analysis. Therefore, when the size of the rotary compressor is not changed, the displacement of the compressor cannot be further increased due to the limitation of the cylinder height.
Disclosure of Invention
An object of the present application is to provide a compressor, an outdoor unit of an air conditioner, an air conditioning system, and an assembling method of a compression unit to increase a discharge capacity of the compressor.
The application provides a compressor, includes:
the shell is internally provided with a closed space; and the number of the first and second groups,
the compression unit is arranged in the closed space;
the compression unit comprises at least two cylinders, a crankshaft and at least two pistons, a partition plate is arranged between every two adjacent cylinders, the crankshaft comprises a main shaft, at least two eccentric parts and an auxiliary shaft, the main shaft, the eccentric parts and the auxiliary shaft are sequentially connected, one eccentric part is positioned in the corresponding cylinder, and one piston is correspondingly sleeved on one eccentric part;
wherein the content of the first and second substances,the diameter of the main shaft is larger than that of the auxiliary shaft, and the outer diameter d of each eccentric partDeflectionAn eccentric amount e of each eccentric portion and a diameter d of the main shaftShaft 1The following relationship is satisfied: e.g. of the type>(dDeflection-dShaft 1)/2。
Optionally, in the compressor, the crankshaft is further provided with at least one eccentric connecting portion, one eccentric connecting portion is arranged between every two eccentric portions, the crankshaft penetrates through the partition plate, and the partition plate is connected with the eccentric connecting portion.
Optionally, in the compressor, a through hole is formed in the partition plate to allow the crankshaft to pass through the partition plate, and the through hole is connected to the eccentric connection portion.
Optionally, in the compressor, the eccentric portion and the crankshaft are detachably mounted on the crankshaft.
Optionally, in the compressor, the eccentric portion and the crankshaft are of an integral structure.
Alternatively, in the compressor, the pistons are all mounted to the corresponding eccentric portions from the same direction.
In another aspect, the present invention provides an outdoor unit of an air conditioner, including the compressor.
In another aspect, the present invention provides an air conditioning system, including the outdoor unit of the air conditioner.
In still another aspect, the present invention provides a method of assembling an empty compression unit, the method of assembling the compression unit including the steps of:
the method comprises the following steps: providing a crankshaft, wherein the crankshaft comprises a main shaft, a secondary shaft and at least two eccentric parts, the main shaft, the eccentric parts and the secondary shaft are sequentially connected, the direction in which the secondary shaft extends towards the main shaft is taken as a preset direction, the eccentric part farthest from the secondary shaft is taken as a first eccentric part, the eccentric part close to the secondary shaft is taken as a second eccentric part, and the eccentric amount of each eccentric part meets the following formula:
e>(ddeflection-dShaft 1)/2；
Wherein: e: the eccentricity of the eccentric part;
ddeflection: the outer diameter of each eccentric portion;
dshaft 1: the diameter of the spindle;
step two: mounting a first piston on the first eccentric portion in a predetermined direction;
step three: connecting an upper cylinder cover with the main shaft in a matching manner, and assembling a first cylinder and the upper cylinder cover, wherein the first cylinder is arranged on the periphery of the first piston;
step four: completing a first eccentric assembly;
step five: fitting the partition plate to the crankshaft in a predetermined direction, the partition plate being connected to the first cylinder;
step six: mounting a second piston on the second eccentric portion in a predetermined direction;
step seven: arranging a second cylinder on the periphery of the second piston, wherein the second cylinder is connected with the partition plate in a matched manner;
step eight: completing a second eccentric assembly;
step nine: and assembling a lower cylinder cover on the auxiliary shaft, wherein the lower cylinder cover is connected with the second cylinder in a matching manner.
Optionally, in the assembly method of the compression unit, the process of assembling the first cylinder and the upper cylinder cover further includes pre-assembling the first cylinder and the upper cylinder cover.
Optionally, in the assembly method of the compression unit, the process of cooperatively connecting the second cylinder and the partition plate further includes pre-assembling the second cylinder and the upper cylinder cover.
Compared with the prior art, the compressor that this application provided, the compressor includes casing and compression unit, compression unit sets up in the casing, so the size of the cylinder in the compression unit receives the size restriction of casing, through set up bent axle, eccentric part and piston in the cylinder of certain size, just the external diameter d of eccentric partDeflectionAn eccentric amount e of the eccentric portion and theDiameter d of the main shaftShaft 1The following relationship is satisfied: e.g. of the type>(dDeflection-dShaft 1) And/2, under the size limit of the shell, the displacement upper limit of the compressor is not required to be increased by changing the height and the diameter of the cylinder, and the large displacement of the compressor under the small-size limit of the shell is realized by increasing the eccentric amount.
Drawings
FIG. 1 is a schematic structural diagram of a compressor provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of an eccentric portion provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a separator provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a crankshaft provided in an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a compression unit provided in an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a first cylinder provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a second cylinder provided in the embodiments of the present application;
fig. 8 is a flow chart of an assembly of a compression unit according to an embodiment of the present application.
Wherein the reference numerals of figures 1-7 are as follows:
100-a housing; 110-a closed space;
200-a compression unit; 210-a cylinder; 211-a first cylinder; 211 a-first vane slot; 211 b-first blade; 211 c-a first spring; 211 d-first suction cavity; 211 f-first compression chamber; 212-a second cylinder; 212 a-second vane slot; 212 b-a second blade; 212 c-a second spring; 212 d-second aspiration lumen; 212 f-a second compression chamber; 220-a crankshaft; 221-an eccentric portion; 221 a-first eccentric portion; 221 b-second eccentric portion; 222-an eccentric connection; 223-a main shaft; 224-a secondary shaft; 230-a piston; 231-a first piston; 232-a second piston; 240-partition plate; 241-a through hole; 250-upper cylinder cover; 260-lower cylinder cover;
300-motor.
Detailed Description
To make the objects, advantages and features of the present application more apparent, a compressor, an outdoor unit of an air conditioner, an air conditioning system and a method for assembling a compression unit according to an embodiment of the present invention will be described in further detail with reference to fig. 1 to 8. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present application.
Referring to fig. 1-2 in conjunction with fig. 4, the present embodiment provides a compressor including a shell 100 and a compression unit 200, wherein the shell 100 defines a closed space 110 therein, and the compression unit 200 is disposed in the closed space 110. The compression unit 200 comprises at least two cylinders 210, a crankshaft 220 and at least two pistons 230, wherein the at least two cylinders 210 are arranged along the axial direction of the crankshaft, each cylinder 210 is provided with a working chamber (not shown in the figure), a partition 240 is arranged between every two adjacent cylinders 210, the crankshaft 220 comprises a main shaft 223, at least two eccentric parts 221 and a secondary shaft 224, the main shaft 223, the eccentric parts 221 and the secondary shaft 224 are sequentially connected, in each compression unit 200, the number of the cylinders 210, the number of the eccentric parts 221 and the number of the pistons 230 are the same, one eccentric part 221 is positioned in the corresponding cylinder 210, and one piston 230 is correspondingly sleeved on one eccentric part 221.
Wherein the diameter d of the main shaft 223Shaft 1Is larger than the diameter d of the secondary shaft 224Shaft 2And an outer diameter d of each of the eccentric portions 221DeflectionAn eccentric amount e of each eccentric portion 221 and a diameter d of the main shaft 223Shaft 1The three satisfy the following relations: e.g. of the type>(dDeflection-dShaft 1)/2。
Since the compression unit 200 is disposed in the casing 100 to define the closed space 110, the size of the cylinder in the compression unit 200 is limited by the size of the casing 100, by disposing the crankshaft 220, the eccentric portion 221 and the piston 230 in the cylinder 210 of a certain size, and the outer diameter d of the eccentric portion 221DeflectionAn eccentric amount e of the eccentric portion 221 and a diameter d of the main shaft 223ShaftThe three satisfy the following relations: e.g. of the type>(dDeflection-dShaft 1) And/2, under the certain size limitation of the casing 100, the displacement upper limit of the compressor is not required to be increased by changing the height and the diameter of the cylinder 210, but the large displacement of the compressor under the small size limitation of the casing 100 is realized by increasing the eccentric amount e.
Referring to fig. 3 to 4, further, at least one eccentric connecting portion 222 is further disposed on the crankshaft 220, one eccentric connecting portion 222 is disposed between every two eccentric portions 221, a through hole 241 is formed on the partition 240, the crankshaft 220 can be rotatably disposed in the through hole 241, and the partition 240 is connected to the eccentric connecting portion 222. The inner surface of the through hole 241 is configured to support a support surface of the crankshaft 220, according to the compression unit 200 provided by the embodiment of the present application, the partition plate 240 is disposed between every two eccentric portions 221 of the crankshaft 220, and the inner surface of the through hole 241, through which the crankshaft 220 passes, on the partition plate 240 is formed as a support surface for supporting the crankshaft 220, so that the crankshaft 220 can be supported on the partition plate 240 to rotate, the partition plate 240 can function as a bearing, so that the strength of the middle portion of the crankshaft 220 can be improved, the stress of the upper cylinder cover 250 and the lower cylinder cover 260 can be shared, the rigidity of the crankshaft 220 is enhanced, the reliability of the operation of the compression unit 200 is improved, the reliability of the compressor is improved, the problem that the upper cylinder cover 250 and the lower cylinder cover 260 are far apart and the crankshaft 220 cannot be used as a too thick compressor reliability is solved, it provides the possibility of making a compressor with at least two cylinders 210, playing a positive role in developing a large-displacement compressor and a multi-cylinder compressor using a thin crankshaft 220.
The inner surface of the through hole 241 is configured as a supporting surface for supporting the crankshaft 220 means that when the crankshaft 220 is inserted into the through hole 241, a portion of the crankshaft 220 located in the through hole 241 can abut against the inner surface of the through hole 241 to rotate, and the abutment can be partial abutment or complete abutment. As the crankshaft 220 passes through the partition 240, the diameter of the through hole 241 is larger than that of the eccentric connection portion 222.
Referring to fig. 4 to 7 in conjunction with fig. 1 to 2, specifically, hereinafter, taking as an example a twin-cylinder type compressor, a compressor according to an embodiment of the present application includes a casing 100 and a compression unit 200; the compression unit 200 is disposed in the closed space 110 defined by the casing 100; the compression unit 200 includes a crankshaft 220, an annular first cylinder 211, an annular second cylinder 212, an upper cylinder cover 250, a lower cylinder cover 260, an annular cylindrical partition 240, a first piston 231, and a second piston 232; the first cylinder 211 includes a first vane groove 211a, a first vane 211b, and a first spring 211 c; the second cylinder 212 includes a second vane slot 212a, a second vane 212b, and a second spring 212 c. The crankshaft 220 has two eccentric portions 221, and the eccentric portions 221 include first and second eccentric portions 221a and 221b and an eccentric connecting portion 222 between the first and second eccentric portions 221a and 221 b.
The first piston 231 is sleeved on the first eccentric portion 221a, and both the first piston 231 and the first eccentric portion 221a are disposed in the first cylinder 211. Specifically, the first piston 231 is disposed in the inner peripheral portion of the first cylinder 211, and one side of the first piston abuts against the inner peripheral surface of the first cylinder 211 and the other side of the first piston eccentrically rotates in the first cylinder 211; the first vane 211b is disposed in the first vane groove 211a formed in the first cylinder 211 so as to be movable forward and backward in the direction of the central axis of the first cylinder 211; the first spring 211c is partially disposed in the first vane groove 211a, and one end disposed in the first vane groove 211a is connected to the first vane 211b, and the other end not disposed in the first vane groove 211a is connected to the housing 100, so as to press the first vane 211b toward the outer circumference of the first piston 231. At this time, the outer circumferential surface of the first piston 231 linearly abuts against the inner circumferential surface of the first cylinder 211, and the linearly abutting position moves along the inner circumferential surface of the first cylinder 211 as the eccentric rotation progresses.
Similarly, the second piston 232 is sleeved on the second eccentric portion 221b, and both the second piston 232 and the second eccentric portion 221b are disposed in the second cylinder 212. Specifically, the second piston 232 is disposed in an inner peripheral portion of the second cylinder 212, and one side of the second piston abuts against the inner peripheral surface of the second cylinder 212 and the other side of the second piston eccentrically rotates in the second cylinder 212; the second vane 212b is disposed in the second vane groove 212a formed in the first cylinder 211 so as to be movable forward and backward in the direction of the central axis of the second cylinder 212; the second spring 212c is partially disposed in the second vane slot 212b, and one end disposed in the second vane slot 212b is connected to the second vane 212b, and the other end not disposed in the second vane slot 212b is connected to the casing 100, so as to press the second vane 212b toward the outer circumference of the second piston 232. At this time, the outer circumferential surface of the second piston 232 linearly abuts against the inner circumferential surface of the second cylinder 212, and the linearly abutting position moves along the inner circumferential surface of the second cylinder 212 as the eccentric rotation progresses. The upper cylinder head 250 and the lower cylinder head 260 are disposed at both axial ends of the crankshaft 220.
It should be noted that the size of the first cylinder 211 and the size of the second cylinder 212 may be designed to be the same size or different sizes according to the requirement of practical application.
Referring to fig. 3 in combination with fig. 4, the through hole 241 of the partition 240 is matched with the eccentric connecting portion 222 of the crankshaft 220, and the partition 240 separates the first cylinder 211 and the second cylinder 212. The first piston 231 and the second piston 232 are rotatably mounted on a first eccentric portion 221a and a second eccentric portion 221b of the crankshaft 220, respectively. A space surrounded by the first piston 231, the first cylinder 211, the upper cylinder head 250, and the partition 240 is formed as a first working chamber (not shown in the drawings), and the first vane 211b of the first cylinder 211 divides the first working chamber into a first suction chamber 211d and a first compression chamber 211f by abutting against the first piston 231. Similarly, a space surrounded by the second piston 232, the second cylinder 212, the lower cylinder head 260, and the partition 240 is formed as a second working chamber (not shown), and the second vane 212b of the second cylinder 212 is in contact with the second piston 232 to divide the second working chamber into a second suction chamber 212d and a second compression chamber 212 f.
The first eccentric portion 221a and the second eccentric portion 221b are integrated with the crankshaft 220, and when the first eccentric portion 221a and the second eccentric portion 221b are integrated with the crankshaft 220, the number of assembling processes of the compressor by workers can be reduced, and labor cost can be reduced. Therefore, any connection structure of the first and second eccentric portions 221a and 221b and the crankshaft 220 that can satisfy the above-described functions may be equivalently substituted.
With continuing reference to fig. 4 in conjunction with fig. 1, further, the compressor further includes a motor 300, the crankshaft 220 includes a main shaft 223 and a secondary shaft 224, the diameter d of the main shaft 223Shaft 1Is larger than the diameter d of the secondary shaft 224Shaft 2The main shaft 223 is connected to the motor 300 at one end and the auxiliary shaft 224 at the other end, the first eccentric portion 221a is disposed on the main shaft 223, the second eccentric portion 221b is disposed on the auxiliary shaft 224, and an outer diameter d of the first eccentric portion 221aPartial pressure 1The eccentric amount e of the first eccentric portion 221a1And the diameter d of said main shaft 223Shaft 1The following relationship is satisfied: e.g. of the type1>(dPartial pressure 1-dShaft 1) /2, the outer diameter d of the second eccentric portion 221bPartial pressure 2The eccentric amount e of the second eccentric portion 221b2And the diameter d of the secondary shaft 224Shaft 2The following relationship is satisfied: e.g. of the type2>(dPartial pressure 2-dShaft 1)/2. Due to the outer diameter d of each eccentric part 221DeflectionAn eccentric amount e of each eccentric portion 221, and a diameter d of a portion of the crankshaft 220 where the eccentric portion 221 is providedShaftAll satisfy the following relationships: e.g. of the type>(dDeflection-dShaft 1) 2, it is not necessary to increase the upper limit of the displacement of the compressor by changing the height and diameter of the cylinder 210 under the size limit of the casing 100, but the eccentric amount e of the first eccentric portion 221a is increased1And the eccentricity e of the second eccentricity2To realize a small size of the compressor in the casing 100Large displacement under restriction; further, due to the diameter d of the secondary shaft 224Shaft 2Smaller than the diameter d of the main shaft 223Shaft 1The first eccentric portion 221a is on the main shaft 223 and is higher than the auxiliary shaft 224, so that the first piston 231 and the second piston 232 can be assembled in one direction from the end of the auxiliary shaft 224, which can facilitate the assembling of the compressor by the worker.
As can be seen, if the size of the first cylinder 211 is the same as the size of the second cylinder 212, the outer diameter d of the first eccentric portion 221a is the same as the outer diameter d of the second eccentric portionPartial pressure 1And the outer diameter d of the second eccentric portion 221bPartial pressure 2Is the same, due to the diameter d of the secondary shaft 224Shaft 2Smaller than the diameter d of the main shaft 223Shaft 1Therefore, the eccentric amount e of the first eccentric portion 221a1An eccentric amount e smaller than the second eccentric portion 221b2If the size of the first cylinder 211 is the same as that of the second cylinder 212, the displacement of the first cylinder 211 is smaller than that of the second cylinder 212, so it is preferable that, in order to make the forces applied to the secondary shaft 224 and the primary shaft 223 relatively uniform, the size of the first cylinder 211 is larger than that of the second cylinder 212, and the eccentric amount e of the first eccentric portion 221a is larger than that of the second cylinder 2121And the eccentric amount e of the second eccentric portion 221b2When the maximum stress is achieved, the stress on the main shaft 223 and the auxiliary shaft 224 is relatively uniform, which is beneficial to prolonging the service life of the crankshaft 220.
Wherein the diameter d of the eccentric connection portion 222Is connected withSatisfies the following condition dShaft 2≤dIs connected with≤dShaft 1This ensures that the first piston 231, the second piston 232 and the partition 240 are assembled in one direction from the end of the auxiliary shaft 224, which facilitates the assembly of the compressor by the operator.
In order to ensure that a portion of the first piston 231 is not caught by the second eccentric portion 221b when the first piston 231 is assembled, the length of the eccentric connecting portion 222 is at least greater than a half of the outer diameter of the first piston 231, so that the first piston 231 needs to pass through the second eccentric portion 221b when assembled to the first eccentric portion 221a from the end of the auxiliary shaft 224, and a portion of the first piston 231 is caught by the second eccentric portion 221b when the first piston 231 is assembled to the first eccentric portion 221a when the length of the eccentric connecting portion 222 is less than a half of the outer diameter of the first piston 231.
On the other hand, the embodiment of the application also provides an air conditioner outdoor unit, which comprises the compressor.
In another aspect, an embodiment of the present application further provides an air conditioning system, which includes a plurality of indoor units and an outdoor unit of the air conditioner described above, where the outdoor unit is connected to the plurality of indoor units and simultaneously provides a refrigerant to the plurality of indoor units.
In still another aspect, referring to fig. 8 in combination with fig. 1 to 5, an embodiment of the present application further provides an assembling method of a compressing unit 200, including the following steps:
the method comprises the following steps: providing a crankshaft 220, wherein the crankshaft 220 comprises a main shaft 223, a secondary shaft 224 and at least two eccentric parts 221, the main shaft 223, the eccentric parts 221 and the secondary shaft 224 are connected in sequence, the direction in which the secondary shaft 224 extends towards the main shaft 223 is taken as a predetermined direction, the eccentric part farthest from the secondary shaft 224 is taken as a first eccentric part 221a, the eccentric part close to the secondary shaft 224 is taken as a second eccentric part 221b, and the eccentric amount e of each eccentric part 221 satisfies the following formula:
e>(ddeflection-dShaft 1)/2；
Wherein: e: the eccentricity of the eccentric part;
ddeflection: the outer diameter of each eccentric portion;
dshaft 1: the diameter of the spindle;
step two: mounting the first piston 231 on the first eccentric portion 221a in a predetermined direction; due to the diameter d of the secondary shaft 224Shaft 2Smaller than the diameter d of the main shaft 223Shaft 1The first piston 231 is mounted on the first eccentric portion 221a from the end of the auxiliary shaft 224, so that the eccentric amount e of the first eccentric portion 221a can be secured1Under the condition of satisfying e1>(dPartial pressure 1-dShaft 1) And/2, the first piston 231 can be smoothly mounted on the first eccentric portion 221 a.
Step three: an upper cylinder cover 250 is matched and connected with the main shaft 223, a first cylinder 211 is assembled with the upper cylinder cover 250, and the first cylinder 211 is arranged on the periphery of the first piston 231; namely, the upper cylinder cover 250 is sleeved on the crankshaft 220, the upper cylinder cover 250 supports the crankshaft 220, the first cylinder 211 is sleeved on the periphery of the first piston 231, and the first cylinder 211 is assembled and connected with the upper cylinder cover 250.
Step four: completing a first eccentric assembly; that is, the first eccentric assembly is completed after the first cylinder 211 and the upper cylinder head 250 are assembled.
Step five: fitting the partition 240 on the crankshaft 220 in a predetermined direction, the partition 240 being connected with the first cylinder 221; the partition 240 partitions the first cylinder 211 and the second cylinder 212
Step six: mounting a second piston 232 on the second eccentric portion 221b in a predetermined direction; due to the diameter d of the secondary shaft 224Shaft 2Smaller than the diameter d of the main shaft 223Shaft 1The second piston 232 can be mounted on the second eccentric portion 221b only from the countershaft 224 end.
Step seven: the second cylinder 212 is disposed on the outer periphery of the second piston 232, and the second cylinder 232 is connected to the partition 240 in a fitting manner, that is, after the second cylinder 212 is sleeved on the outer periphery of the second piston 232, the second cylinder 212 is connected to the partition 240 in a fitting manner.
Step eight: and completing the second eccentric assembly, namely completing the matching connection of the second cylinder 212 and the partition 240.
Step nine: fitting a lower head 260 onto the layshaft 224, the lower head 260 being in mating connection with the second cylinder 212; that is, after the second eccentric assembly is completed, the lower cylinder cover 260 is assembled to the auxiliary shaft 224, and the lower cylinder cover 260 is connected to the second cylinder 212, so that the lower cylinder cover 260 further supports the crankshaft 220.
If the first piston 231 is installed to the first eccentric portion 221a from the end of the main shaft 223, the crankshaft 220 with the first piston 231 is inserted into the upper cylinder head 250 at the same time, and when the crankshaft 220 is assembled with the upper cylinder head 250, the first piston 231 easily slides off from the main shaft 223 in the subsequent assembly process, and falls on the upper cylinder head 250, the ground or the equipment, which causes unnecessary waste of the upper cylinder head 250 and the first piston 231 and damage of the equipment, if the assembly method of the present embodiment is adopted, the outer diameter d of each eccentric portion 221 is combinedDeflectionAn eccentric amount e of each eccentric portion 221 and a diameter d of the main shaft 223Shaft 1The three satisfy the following relations: e.g. of the type>(dDeflection-dShaft 1) And/2, so that the piston 231 can not slide off the main shaft 223 at all, not only the problem that the first piston 231 easily slides off the main shaft 223 and falls on the upper cylinder cover 250, the ground or the equipment is completely avoided, but also under the certain size limitation of the casing 100, the upper limit of the displacement of the compressor can be increased without changing the height and the diameter of the cylinder 210, and the large displacement of the compressor under the small size limitation of the casing 100 can be realized by increasing the eccentric amount e.
Preferably, the assembling process of the first cylinder 211 and the upper cylinder cover 250 further includes pre-assembling the first cylinder 221 and the upper cylinder cover 250, that is, the bolt connecting the first cylinder 211 and the upper cylinder cover 250 is not completely screwed, and the relative position of the first cylinder 211 and the upper cylinder cover 250 is pre-fixed, so that the assembling of the first cylinder 211 and the upper cylinder cover 220 can be facilitated, and the first eccentricity can be conveniently adjusted to more conveniently complete the assembling of the first eccentricity.
Preferably, the process of the fitting connection of the second cylinder 212 and the partition 240 further includes pre-assembling the second cylinder 212 and the upper cylinder cover 250, that is, incompletely screwing the bolt connecting the second cylinder 212 and the upper cylinder cover 250, and pre-fixing the relative position of the second cylinder 212 and the upper cylinder cover 250, so that the second cylinder 212 and the partition 240 can be conveniently assembled, and the second eccentricity can also be conveniently adjusted to more conveniently complete the assembly of the second eccentricity.
The above description is only for the purpose of describing the preferred embodiments of the present application, and is not intended to limit the scope of the present application, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims (10)

1. A compressor, comprising:
the shell is internally provided with a closed space; and the number of the first and second groups,
the compression unit is arranged in the closed space;
the compression unit comprises at least two cylinders, a crankshaft and at least two pistons, a partition plate is arranged between every two adjacent cylinders, the crankshaft comprises a main shaft, at least two eccentric parts and an auxiliary shaft, the main shaft, the eccentric parts and the auxiliary shaft are sequentially connected, one eccentric part is positioned in the corresponding cylinder, and one piston is correspondingly sleeved on one eccentric part;
wherein the diameter of the main shaft is larger than that of the auxiliary shaft, and the outer diameter d of each eccentric partDeflectionAn eccentric amount e of each eccentric portion and a diameter d of the main shaftShaft 1The following relationship is satisfied: e.g. of the type>(dDeflection-dShaft 1)/2。
2. The compressor of claim 1, wherein the crankshaft further comprises at least one eccentric connecting portion, one eccentric connecting portion is disposed between every two eccentric portions, the crankshaft passes through the partition plate, and the partition plate is connected to the eccentric connecting portion.
3. The compressor of claim 2, wherein the partition plate is formed with a through hole for the crankshaft to pass through, the through hole being connected with the eccentric connection portion.
4. The compressor of claim 1, wherein the eccentric portion is of unitary construction with the crankshaft.
5. The compressor of claim 1, wherein a plurality of the pistons are each mounted to the corresponding eccentric portion from the same direction.
6. An outdoor unit of an air conditioner, comprising the compressor of any one of claims 1 to 5.
7. An air conditioning system comprising the outdoor unit of claim 6.
8. A method of assembling a compression unit, comprising the steps of:
the method comprises the following steps: providing a crankshaft, wherein the crankshaft comprises a main shaft, a secondary shaft and at least two eccentric parts, the main shaft, the eccentric parts and the secondary shaft are sequentially connected, the direction in which the secondary shaft extends towards the main shaft is taken as a preset direction, the eccentric part farthest from the secondary shaft is taken as a first eccentric part, the eccentric part close to the secondary shaft is taken as a second eccentric part, and the eccentric amount of each eccentric part meets the following formula:
e>(ddeflection-dShaft 1)/2；
Wherein: e: the eccentricity of the eccentric part;
ddeflection: the outer diameter of each eccentric portion;
dshaft 1: the diameter of the spindle;
step two: mounting a first piston on the first eccentric portion in a predetermined direction;
step three: connecting an upper cylinder cover with the main shaft in a matching manner, and assembling a first cylinder and the upper cylinder cover, wherein the first cylinder is arranged on the periphery of the first piston;
step four: completing a first eccentric assembly;
step five: fitting a partition plate to the crankshaft in a predetermined direction, the partition plate being connected to the first cylinder;
step six: mounting a second piston on the second eccentric portion in a predetermined direction;
step seven: arranging a second cylinder on the periphery of the second piston, wherein the second cylinder is connected with the partition plate in a matched manner;
step eight: completing a second eccentric assembly;
step nine: and assembling a lower cylinder cover on the auxiliary shaft, wherein the lower cylinder cover is connected with the second cylinder in a matching manner.
9. The method of assembling a compression unit of claim 8, wherein assembling a first cylinder with the upper cylinder head further comprises pre-assembling the first cylinder with the upper cylinder head.
10. The method of assembling a compression unit of claim 8, wherein the process of mating the second cylinder with the bulkhead further comprises pre-assembling the second cylinder with the upper cylinder head.
CN201910590233.4A 2019-06-27 2019-06-27 Compressor, air conditioner outdoor unit, air conditioning system and assembling method of compression unit Pending CN112145421A (en)

Priority Applications (1)

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CN201910590233.4A CN112145421A (en) 2019-06-27 2019-06-27 Compressor, air conditioner outdoor unit, air conditioning system and assembling method of compression unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910590233.4A CN112145421A (en) 2019-06-27 2019-06-27 Compressor, air conditioner outdoor unit, air conditioning system and assembling method of compression unit

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06257580A (en) * 1993-03-10 1994-09-13 Matsushita Electric Ind Co Ltd Two-cylinder rotary compressor
CN101688535A (en) * 2007-08-28 2010-03-31 东芝开利株式会社 Multicylinder rotary type compressor, and refrigerating cycle apparatus
CN202273879U (en) * 2011-09-28 2012-06-13 东芝开利株式会社 Compressor and refrigeration circulating device
CN103727037A (en) * 2012-10-16 2014-04-16 三菱电机株式会社 Rotary compressor
JP2014173546A (en) * 2013-03-12 2014-09-22 Panasonic Corp Hermetic rotary compressor
CN109058109A (en) * 2018-10-10 2018-12-21 珠海凌达压缩机有限公司 A kind of compressor and air conditioner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06257580A (en) * 1993-03-10 1994-09-13 Matsushita Electric Ind Co Ltd Two-cylinder rotary compressor
CN101688535A (en) * 2007-08-28 2010-03-31 东芝开利株式会社 Multicylinder rotary type compressor, and refrigerating cycle apparatus
CN202273879U (en) * 2011-09-28 2012-06-13 东芝开利株式会社 Compressor and refrigeration circulating device
CN103727037A (en) * 2012-10-16 2014-04-16 三菱电机株式会社 Rotary compressor
JP2014173546A (en) * 2013-03-12 2014-09-22 Panasonic Corp Hermetic rotary compressor
CN109058109A (en) * 2018-10-10 2018-12-21 珠海凌达压缩机有限公司 A kind of compressor and air conditioner

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Application publication date: 20201229