CN113606117A - Electric compressor and refrigeration equipment - Google Patents

Electric compressor and refrigeration equipment Download PDF

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Publication number
CN113606117A
CN113606117A CN202111093574.4A CN202111093574A CN113606117A CN 113606117 A CN113606117 A CN 113606117A CN 202111093574 A CN202111093574 A CN 202111093574A CN 113606117 A CN113606117 A CN 113606117A
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CN
China
Prior art keywords
aluminum alloy
shell
electric compressor
refrigerant
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111093574.4A
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Chinese (zh)
Inventor
夏小鸽
杨开成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Meizhi Compressor Co Ltd
Original Assignee
Guangdong Meizhi Compressor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Meizhi Compressor Co Ltd filed Critical Guangdong Meizhi Compressor Co Ltd
Priority to CN202111093574.4A priority Critical patent/CN113606117A/en
Publication of CN113606117A publication Critical patent/CN113606117A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121Casings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/10Alloys based on aluminium with zinc as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/14Alloys based on aluminium with copper as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/16Alloys based on aluminium with copper as the next major constituent with magnesium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/18Alloys based on aluminium with copper as the next major constituent with zinc
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/18Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressor (AREA)

Abstract

The invention discloses an electric compressor and a refrigeration device. The shell of the electric compressor is an aluminum alloy shell, lubricating oil and a refrigerant are packaged in the aluminum alloy shell, the aluminum alloy shell is made of aluminum alloy powder through extrusion casting, and the aluminum alloy powder comprises: 0.1 to 12 wt% of silicon; 0.2 to 2.0 wt% of magnesium; 0.2 to 2.0 wt% iron; 0.05 to 1.0 wt% of zinc; 0.01 to 0.5 wt% of titanium; 0 to 3.0 wt% of copper; 0-0.5 wt% manganese; 0-0.5 wt% nickel; 0 to 0.5 wt% tin; and the balance aluminum. The shell of the electric compressor is made of extrusion casting aluminum alloy, has high compressive strength and yield strength, and is suitable for being used as CO2An electric compressor for a refrigerant.

Description

Electric compressor and refrigeration equipment
Technical Field
The invention relates to the technical field of electric compressors, in particular to an electric compressor and refrigeration equipment.
Background
The electric automobile is an ideal choice for new energy automobiles due to energy conservation and environmental protection, and the electric automobile has many internal devices, large self weight and small space for arrangement, so that the miniaturization and light weight of the electric compressor are important problems to be solved. At present, the electric compressor mostly adopts aluminum as a sealing shell, a refrigerating working medium adopts R134a refrigerant, and the aluminum shell can meet the sealing requirement by adopting general casting due to the lower working pressure of the R134a refrigerant. The R134a refrigerant is a hydrofluorocarbon, has a destruction coefficient to the ozone layer of 0, but has a high potential for climate warming, and is not specified in the montreal protocol, but is characterized as a greenhouse gas in the kyoto protocol of the united nations climate change framework convention, and the european union prohibits the use of a refrigerant related to a Hydrofluorocarbon (HFCS) having a high GWP value, and therefore, the use of a refrigerant having a low GWP value for an automobile air conditioner is a trend and necessity.
The carbon dioxide refrigerant is a natural working medium, ODP (optical density distribution) is 0, GWP (global warming potential) is 1, the source is wide, the cost is low, the latent heat of evaporation is large, the refrigerating capacity per unit volume is quite high, but the working pressure of the carbon dioxide refrigerant compressor is up to 15MPa, the compressor is 5-10 times that of a conventional refrigerant, the requirements on the compression resistance and the yield capacity of a sealed shell are extremely high, and the conventional aluminum alloy is cast by adopting general pressure and has low density and can not meet the requirement on high pressure. If the thickness of the shell of the hot-rolled steel plate carbon dioxide compressor is increased to 6-10 mm, the weight of the whole compressor is increased, and the requirement for light weight of the automobile air-conditioning compressor cannot be met, so that the satisfaction degree of users is reduced.
Thus, existing motor compressor housings remain to be improved.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to propose an electric compressor and a refrigeration device. The shell of the electric compressor is made of extrusion casting aluminum alloy, has high compressive strength and yield strength, and is suitable for being used as CO2An electric compressor for a refrigerant.
In a first aspect of the present invention, a motor-driven compressor is presented. According to an embodiment of the present invention, the housing of the electric compressor is an aluminum alloy housing, and lubricating oil and a coolant are enclosed in the aluminum alloy housing, and the aluminum alloy housing is made of aluminum alloy powder by extrusion casting, the aluminum alloy powder including: 0.1 to 12 wt% of silicon; 0.2 to 2.0 wt% of magnesium; 0.2 to 2.0 wt% iron; 0.05 to 1.0 wt% of zinc; 0.01 to 0.5 wt% of titanium; 0 to 3.0 wt% of copper; 0-0.5 wt% manganese; 0-0.5 wt% nickel; 0 to 0.5 wt% tin; and the balance aluminum.
Therefore, according to the embodiment of the invention, the shell of the motor compressor is made of extrusion casting aluminum alloy, has high compressive strength and yield strength, and is suitable for being used in CO2An electric compressor for a refrigerant.
In addition, the motor-driven compressor according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the aluminum alloy powder comprises: 0.1 to 12 wt% of silicon; 0.2 to 2.0 wt% of magnesium; 0.2 to 2.0 wt% iron; 0.05 to 1.0 wt% of zinc; 0.01 to 0.5 wt% of titanium; 0.1 to 3.0 wt% of copper; 0.1 to 0.5 wt% manganese; 0.05 to 0.5 wt% of nickel; 0.05 to 0.5 wt% of tin; and the balance aluminum.
In some embodiments of the present invention, the thickness of the aluminum alloy shell is 4 to 10 mm.
In some embodiments of the invention, the aluminum alloy housing has a tensile strength of not less than 290MPa and a yield strength of not less than 220 MPa.
In some embodiments of the present invention, the viscosity of the lubricating oil is 40 to 100mm2/s。
In some embodiments of the invention, the lubricating oil is a hydrocarbon oil and/or an oxygenated synthetic oil.
In some embodiments of the invention, the lubricant is at least one selected from POE, PVE, and PAG.
In some embodiments of the invention, the refrigerant is CO2And (4) a refrigerant.
In a second aspect of the invention, a refrigeration apparatus is presented. According to an embodiment of the present invention, the refrigeration apparatus comprises the above-described motor-driven compressor. The refrigeration device thus has a low mass, so that the requirements of the customer are met.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a sectional view of a motor-driven compressor according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In a first aspect of the present invention, a motor-driven compressor is presented. According to an embodiment of the present invention, referring to fig. 1, the housing of the electric compressor is an aluminum alloy housing 100, in which lubricating oil and coolant are enclosed, and the aluminum alloy housing may be made of aluminum alloy powder by extrusion casting, and the aluminum alloy powder may include: 0.1 to 12 wt% of silicon; 0.2 to 2.0 wt% of magnesium; 0.2 to 2.0 wt% iron; 0.05 to 1.0 wt% of zinc; 0.01 to 0.5 wt% of titanium; 0 to 3.0 wt% of copper; 0-0.5 wt% manganese; 0-0.5 wt% nickel; 0 to 0.5 wt% tin; and the balance aluminum.
The electric compression aluminum alloy shell prepared by adopting the aluminum alloy powder components and the proportion through the extrusion casting process can firstly meet the requirement of light weight, and meanwhile, the tensile strength of the aluminum alloy shell is not lower than 290MPa, the yield strength of the aluminum alloy shell is not lower than 220MPa, and further the performance requirement of the electric compressor shell can be completely met. In addition, the aluminum alloy shell can also be suitable for use with CO2The aluminum alloy shell meets the requirement of 17MPa of design pressure, and the highest pressure resistance reaches 34 MPa. The requirement of 14MPa of design pressure can be met at the working temperature of 170 ℃. Therefore, the motor-driven compressor of the embodiment of the invention can further improve the light weight level and stability by adopting the aluminum alloy powder composition and the aluminum alloy shell obtained by proportioning extrusion casting.
According to an embodiment of the present invention, the aluminum alloy powder may include: 0.1 to 12 wt% of silicon; 0.2 to 2.0 wt% of magnesium; 0.2 to 2.0 wt% iron; 0.05 to 1.0 wt% of zinc; 0.01 to 0.5 wt% of titanium; 0.1 to 3.0 wt% of copper; 0.1 to 0.5 wt% manganese; 0.05 to 0.5 wt% of nickel; 0.05 to 0.5 wt% of tin; and the balance aluminum. Therefore, the compressive strength and the yield strength of the prepared aluminum alloy shell can be further improved. Specifically, the tensile strength and yield strength of the aluminum alloy shell can be further improved by preferably selecting the above aluminum alloy powder components and proportions.
According to the embodiment of the invention, the thickness of the aluminum alloy shell can be 4-10 mm. Therefore, the weight of the aluminum alloy shell can be obviously reduced while the mechanical property of the aluminum alloy shell is ensured.
According to the motor-driven compressor of the above embodiment of the present invention, the aluminum alloy shell has a tensile strength of not less than 290MPa and a yield strength of not less than 220 MPa. Thereby, the reliability of the electric compressor can be further improved.
According to the electric compressor of the embodiment of the invention, the lubricant oil encapsulated in the aluminum alloy shell is not particularly limited, so that the applicability of the electric compressor can be further improved, for example, the viscosity of the encapsulated lubricant oil can be 40-100 mm2And s. This can significantly improve the cooling effect of the electric compressor.
According to an embodiment of the present invention, the lubricating oil may be a hydrocarbon oil and/or an oxygen-containing synthetic oil. This can further improve the cooling effect of the electric compressor. According to an embodiment of the present invention, the lubricant may be at least one selected from POE, PVE, and PAG. This can further improve the cooling effect of the electric compressor. Therefore, the electric compressor provided by the embodiment of the invention adopts the aluminum alloy shell, so that the selection range of the lubricating oil can be remarkably improved, and the applicability of the electric compressor is further improved.
According to an embodiment of the present invention, the cooling medium enclosed in the aluminum alloy housing is not particularly limited. The aluminum alloy shell can meet the requirement of 17MPa of design pressure, and the highest pressure resistance can reach 34 MPa. Even at the working temperature of 170 ℃, the requirement of 14MPa of design pressure can be met. Therefore, the electric compressor of the embodiment of the present invention can satisfy the use of CO2The pressure requirement of the refrigerant. Specifically, the refrigerant encapsulated in the electric compressor according to the embodiment of the present invention may be CO2And (4) a refrigerant. This can further improve the application range and the cooling effect of the electric compressor.
According to the embodiment of the invention, the aluminum alloy shell for electric compression, which is prepared by adopting the components and the proportion of the aluminum alloy powder and adopting the extrusion casting process, can firstly meet the requirement of light weight, and meanwhile, the tensile strength of the aluminum alloy shell is not lower than 290MPa, the yield strength of the aluminum alloy shell is not lower than 220MPa, and further, the performance requirement of the shell of the electric compressor can be completely met. In addition, the aluminum alloy shell can also be suitable for use with CO2The aluminum alloy shell meets the requirement of 17MPa of design pressure, and the highest pressure resistance reaches 34 MPa. The requirement of 14MPa of design pressure can be met at the working temperature of 170 ℃. Thus, it is possible to provideThe electric compressor of the embodiment of the invention adopts the aluminum alloy shell obtained by extrusion casting by adopting the aluminum alloy powder composition and proportioning, and can further improve the light weight level and stability.
In a second aspect of the invention, a refrigeration apparatus is presented. According to an embodiment of the present invention, the refrigeration apparatus includes the motor-driven compressor according to the above-described embodiment of the present invention. The electric compressor of the embodiment of the invention has the aluminum alloy shell, so the electric compressor is lighter, has higher pressure resistance, and meets the requirement of CO2And (5) the use requirement of the refrigerant. Therefore, the refrigeration equipment with the electric compressor in the embodiment of the invention can not only meet the requirement of light weight, but also further improve the reliability of the refrigeration equipment, thereby meeting the requirements of customers.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
The aluminum alloy powder comprises: 11.38 wt% silicon, 0.2 wt% magnesium, 0.17 wt% manganese, 0.83 wt% iron, 0.95 wt% zinc, 0.01 wt% titanium, 0.05 wt% nickel and the balance aluminum.
The aluminum alloy powder is adopted to squeeze and cast an aluminum alloy shell, and the mechanical properties of the material are tested, wherein the tensile strength is 350MPa, and the yield strength is 250 MPa.
Example 2
The aluminum alloy powder comprises: 8.6-9.4 wt% of silicon, 0.45-0.6 wt% of magnesium, 0.1 wt% of manganese, 0.2 wt% of iron, 0.1 wt% of zinc, 0.2 wt% of titanium, 1.6-2.0 wt% of copper and the balance of aluminum.
The aluminum alloy powder is adopted to squeeze and cast the aluminum alloy shell, and the mechanical properties of the material are tested, wherein the tensile strength is 350MPa, and the yield strength is 240 MPa.
Example 3
The aluminum alloy powder comprises: 6.5 to 7.5 wt% of silicon, 0.3 to 0.45 wt% of magnesium, 0.05 wt% of manganese, 0.23 to 0.5 wt% of iron, 0.05 wt% of zinc, 0.2 wt% of titanium, 0.1 wt% of copper, 0 to 0.5 wt% of nickel, 0 to 0.5 wt% of tin and the balance of aluminum.
The aluminum alloy powder is adopted to squeeze and cast the aluminum alloy shell, and the mechanical properties of the material are tested, wherein the tensile strength is 310MPa, and the yield strength is 240 MPa.
Example 4
The aluminum alloy powder comprises: 0.1 to 0.25 wt% of silicon, 1.3 to 1.8 wt% of magnesium, 0.9 to 1.3 wt% of iron, 0.1 wt% of zinc, 0.04 to 0.1 wt% of titanium, 1.9 to 2.7 wt% of copper and the balance of aluminum.
The aluminum alloy powder is adopted to squeeze and cast the aluminum alloy shell, and the mechanical properties of the material are tested, wherein the tensile strength is 380MPa, and the yield strength is 285 MPa.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (6)

1. The electric compressor is characterized in that a shell of the electric compressor is an aluminum alloy shell, lubricating oil and a refrigerant are packaged in the aluminum alloy shell, and the refrigerant is CO2A coolant, the aluminum alloy case being made of aluminum alloy powder by squeeze casting, the aluminum alloy powder containing:
0.1 to 0.25 wt% of silicon;
1.3 to 1.8 wt% of magnesium;
0.9 to 1.3 wt% iron;
0.05 to 1.0 wt% of zinc;
0.04 to 0.1 wt% of titanium;
1.9-2.7 wt% copper; and
the balance being aluminum.
2. The motor-driven compressor according to claim 1, wherein the lubricating oil has a viscosity of 40 to 100mm2/s。
3. The motor-driven compressor according to claim 2, wherein the lubricating oil is a hydrocarbon oil and/or an oxygen-containing synthetic oil.
4. The motor-driven compressor according to claim 2, wherein the lubricant is at least one selected from the group consisting of POE, PVE, and PAG.
5. The motor-driven compressor according to claim 1, wherein the aluminum alloy shell has a thickness of 4 to 10 mm.
6. A refrigerating apparatus comprising the motor-driven compressor according to any one of claims 1 to 5.
CN202111093574.4A 2017-01-24 2017-01-24 Electric compressor and refrigeration equipment Pending CN113606117A (en)

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CN202111093574.4A CN113606117A (en) 2017-01-24 2017-01-24 Electric compressor and refrigeration equipment
CN201710054969.0A CN106870333B (en) 2017-01-24 2017-01-24 Electric compressor and refrigeration equipment

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CN108330346A (en) * 2018-01-15 2018-07-27 深圳市天合兴五金塑胶有限公司 Novel high-strength low-heat splits pack alloy composite material
DE102018129473A1 (en) 2018-11-22 2020-05-28 Bitzer Kühlmaschinenbau Gmbh Refrigerant compressors

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