CN211261360U - Compressor system and air conditioning unit - Google Patents
Compressor system and air conditioning unit Download PDFInfo
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- CN211261360U CN211261360U CN201922208895.9U CN201922208895U CN211261360U CN 211261360 U CN211261360 U CN 211261360U CN 201922208895 U CN201922208895 U CN 201922208895U CN 211261360 U CN211261360 U CN 211261360U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 239000002826 coolant Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 239000002918 waste heat Substances 0.000 description 18
- 239000003507 refrigerant Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002699 waste material Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
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- 238000011161 development Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
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Abstract
The application provides a compressor system and air conditioning unit, this compressor system includes motor, main compressor, vice compressor and condenser. The motor comprises a motor main body and a motor shaft extending out of the motor main body, a main compressor is in driving connection with the motor shaft, the main compressor is used for compressing cooling media for refrigeration or heating, and an auxiliary compressor is in driving connection with the motor shaft. The condenser is connected with the exhaust end of the auxiliary compressor through a first cooling medium pipeline, the condenser is connected with the cooling flow channel of the motor main body through a second cooling medium pipeline, the cooling flow channel of the motor main body is connected with the suction end of the auxiliary compressor through a third cooling medium pipeline, and the throttling device is arranged on the second cooling medium pipeline. Use the technical scheme of the utility model, let a cooling circulation system who specially belongs to the motor carry out the cooling of pertinence to the motor in other words, and then effectively reduce the temperature of motor, guarantee compressor system's long-term reliable operation.
Description
Technical Field
The utility model relates to a refrigeration plant technical field particularly, relates to a compressor system and air conditioning unit.
Background
With the rapid development and growth of global economy and population, the energy demand is larger and larger, the exploitation amount of primary energy such as coal, petroleum, natural gas and the like is also increased, so that the reserve amount of non-renewable energy sources is reduced year by year, and the energy crisis problem is increasingly prominent. In order to solve the problem of energy crisis, the development and utilization of new energy are accelerated, and the problem of energy waste needs to be solved by starting from the energy consumption condition of China. Chemical industry, metallurgy, electric power and the like are primary energy consumers, the energy waste form is mainly expressed by the emission of a large amount of waste heat resources, according to statistics, the waste heat resources emitted in the industrial production process approximately account for 17% -67% of the total fuel consumption, and in 7 industrial industries such as steel, caustic soda, cement and the like, the waste heat resources can account for 1/3% of the total energy consumption. According to the temperature of waste heat resources, the waste heat resources are generally divided into high-temperature waste heat above 600 ℃, medium-temperature waste heat below 600 ℃ and low-temperature waste heat below 300 ℃, and the sources of the waste heat can be divided into flue gas waste heat, waste water waste steam waste heat and cooling medium waste heat, and investigation shows that the low-temperature waste heat resources below 200 ℃ can account for 60% of different waste heat resources. Therefore, in order to overcome the energy waste and solve the energy crisis problem, effective and reasonable waste heat recovery measures are required for different waste heat resources, the energy consumption of the original process flow is reduced, and new production equipment and devices with high energy utilization rate are developed on the basis of the original process flow.
Most of industrial steam is boiler steam, except for power plants which generate electricity by utilizing high-temperature and high-pressure steam, the steam is mostly used in an evaporation concentration system, and evaporation concentration is a very common link in the industry and is widely applied to various industrial productions such as food, pharmacy, chlor-alkali, seawater desalination, sewage treatment and the like. In a small and medium-sized evaporation concentration system, an electric boiler is mostly used for generating steam, the steam temperature is generally within the range of 110-. In a large-scale system, the steam demand is large, the cost of steam generated by an electric boiler is high, the steam is usually used for heating through outsourcing steam, the temperature and the pressure of the outsourcing steam are high, and waste steam generated after passing through an evaporator is generally directly discharged under the condition that the electric boiler is not used. With the rapid increase of energy-saving and environment-friendly requirements and steam price, the cost burden of a wide-spread enterprise is increased rapidly due to the energy consumption in the evaporation concentration process, and the problem how to save the steam cost and improve the heat supply efficiency is the most urgent concern of the current industry using evaporation concentration.
A Mechanical Vapor Recompression (MVR) system is actually a vapor heat pump system, and the principle of the system is to compress low-temperature and low-pressure vapor by a Mechanical compressor, so that the temperature, pressure and specific enthalpy of the vapor are increased, and the vapor is condensed in a condenser to release heat, and is used as a high-grade heat source. The low-temperature steam is heated and pressurized by the compressor and then enters the evaporation/condenser pipe for condensation, the released latent heat heats the raw material liquid at the evaporation side outside the pipe, the raw material liquid in a gas-liquid mixed phase enters the separator, the separated low-temperature steam is used for the compressor to absorb steam, the concentrated liquid is discharged from the bottom, and the waste heat of the condensed water can be used for the waste heat raw material liquid.
The centrifugal compressor is used as a water vapor compressor in engineering, belongs to a speed type compressor, firstly improves the steam speed through the rotation of an impeller, then converts the steam speed energy into pressure energy through a diffuser, and improves the pressure of the steam speed energy. Since the centrifugal compressor belongs to a speed type compressor, the rotation speed of the whole system is very high. In the compressor, the high-speed motor generates a considerable amount of heat.
The existing centrifugal compressor system has insufficient cooling effect on a motor, a bearing and the like in the compressor, and the long-term reliable operation of the compressor cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a compressor system and air conditioning unit to solve the not enough technical problem of effect to high-speed motor cooling that prior art compressor system exists.
Embodiments of the present application provide a compressor system, including: the motor comprises a motor main body and a motor shaft extending out of the motor main body; the main compressor is in driving connection with a motor shaft and is used for compressing a cooling medium for refrigeration or heating; the auxiliary compressor is in driving connection with a motor shaft; the condenser is connected with the exhaust end of the auxiliary compressor through a first cooling medium pipeline, the condenser is connected with the cooling flow channel of the motor main body through a second cooling medium pipeline, and the cooling flow channel of the motor main body is connected with the air suction end of the auxiliary compressor through a third cooling medium pipeline; and a throttling device arranged on the second cooling medium pipeline.
In one embodiment, the motor shaft extends from each of the ends of the motor body, the primary compressor is located on a first side of the motor body and coupled to a first end of the motor shaft, and the secondary compressor is located on a second side of the motor body and coupled to a second end of the motor shaft.
In one embodiment, the secondary compressor is coupled to the motor shaft by a gear pair.
In one embodiment, the gear pair is a speed increasing gear pair.
In one embodiment, the primary compressor is a first centrifugal compressor.
In one embodiment, the secondary compressor is a second centrifugal compressor.
In one embodiment, the throttling device is an expansion valve.
The application also provides an air conditioning unit, which comprises a compressor system, wherein the compressor system is the compressor system.
In one embodiment, the air conditioning unit is a steam air conditioning unit.
In the above embodiment, after the motor drives the main compressor to participate in compressing the cooling medium for refrigeration or heating, the motor drives the auxiliary compressor to work, the auxiliary compressor, the condenser, the throttling device and the cooling channel of the motor main body form a cooling circulation system, and the cooling circulation system dedicated to the motor performs targeted cooling on the motor, so that the temperature of the motor is effectively reduced, and the long-term reliable operation of the compressor system is ensured. Adopt the technical scheme of the utility model, solved compressor system effectively, the motor calorific capacity is big, and parts such as motor and bearing damage the problem of inefficacy because of the temperature risees easily.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic overall structural view of an embodiment of a compressor system according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The problem that the effect that carries out cooling to motor, bearing etc. is not enough to compressor system among the prior art, the utility model also provides an embodiment that can carry out effective cooling's compressor system to the motor. As shown in fig. 1, the compressor system includes a motor 10, a main compressor 20, a sub-compressor 30, and a condenser 40. The motor 10 includes a motor body 11 and a motor shaft 12 extending from the motor body 11, a main compressor 20 is drivingly connected to the motor shaft 12, the main compressor 20 is used to compress a cooling medium for cooling or heating, and a sub-compressor 30 is drivingly connected to the motor shaft 12. The condenser 40 is connected with the exhaust end of the auxiliary compressor 30 through a first cooling medium pipeline, the condenser 40 is connected with the cooling flow channel of the motor main body 11 through a second cooling medium pipeline, the cooling flow channel of the motor main body 11 is connected with the suction end of the auxiliary compressor 30 through a third cooling medium pipeline, and the throttling device 50 is arranged on the second cooling medium pipeline.
Use the technical scheme of the utility model, participate in compressing cooling medium in order to be used for refrigeration or heat the surplus through motor 10 drive main compressor 20, still through the work of the vice compressor 30 of motor 10 drive, let vice compressor 30, condenser 40, a cooling circulation system is constituteed to the cooling runner of throttling arrangement 50 and motor main part 11, let a cooling circulation system who is exclusively used in motor 10 carry out the pertinence cooling to motor 10, and then effectively reduce motor 10's temperature, guarantee compressor system's long-term reliable operation. Adopt the technical scheme of the utility model, solved compressor system effectively, the motor calorific capacity is big, and parts such as motor and bearing damage the problem of inefficacy because of the temperature risees easily.
Optionally, in the technical solution of this embodiment, the throttling device 50 is an expansion valve. Preferably, the throttling device 50 is an electronic expansion valve.
Alternatively, as shown in fig. 1, in the solution of the present embodiment, the motor shaft 12 extends from both ends of the motor main body 11 respectively. The main compressor 20 is located at a first side of the motor body 11 and connected to a first end of the motor shaft 12, and the sub-compressor 30 is located at a second side of the motor body 11 and connected to a second end of the motor shaft 12. By adopting the technical scheme of the embodiment, the main compressor 20 and the auxiliary compressor 30 are respectively positioned at two sides of the motor main body 11, and then the connection of the two compressors can be completed by using one motor shaft 12 of the motor 10. As another alternative embodiment, the main compressor 20 and the sub-compressor 30 may be disposed at one side of the motor main body 11, and then connected to one end of the motor shaft 12 by using a transmission mechanism, and then the main compressor 20 and the sub-compressor 30 may be driven by transmission.
As shown in fig. 1, in the solution of the present embodiment, optionally, the secondary compressor 30 is connected to the motor shaft 12 through a gear pair 60. In use, as the motor shaft 12 rotates, the secondary compressor 30 is driven by the gear pair 60. More preferably, the gear pair 60 is a speed-increasing gear pair to increase the rotation speed of the secondary compressor 30, so that the cooling cycle system has better cooling performance and the temperature of the motor 10 is more effectively reduced.
It should be noted that, in the technical solution of the present invention, the positions of the main compressor 20, the gear pair 60, the auxiliary compressor 30, etc. are not limited to the left side and the right side of the illustration, the illustration is merely an example, and the motor 10 may be placed in any orientation in practical application.
Optionally, in the technical solution of the present embodiment, the main compressor 20 is a first centrifugal compressor. Thus, the compressor system can be applied to a water vapor air conditioning unit. Optionally, the secondary compressor 30 is also a second centrifugal compressor. As another alternative embodiment, the sub-compressor 30 may be another type of compressor, and may be used in a cooling cycle in combination with a refrigerant such as freon that is commonly used.
Specifically, the compressor system is applied to a steam air conditioning unit, and when the motor 10 rotates, the left main compressor 20 is driven to compress steam. The auxiliary compressor 30 on the right side performs work on the gaseous refrigerant after being accelerated by the gear, and the gaseous refrigerant of the compressor is compressed. The system where the main compressor 20 is located compresses steam, and compresses low-temperature and low-pressure steam, so that the temperature, pressure and specific enthalpy of the steam are improved, the requirements of industrial use are met, and the steam is used as a high-grade heat source. The cooling cycle system in which the sub-compressor 30 is located compresses the gaseous refrigerant, applies work to the gaseous refrigerant to obtain a high-temperature and high-pressure gaseous refrigerant, and then enters the condenser 40 connected with the gaseous refrigerant to be condensed into a liquid refrigerant again, and then the liquid refrigerant enters the cooling flow passage of the motor main body 11 through the throttling function of the throttling device 4. Because the temperature of the cooling channel of the motor body 11 is higher during the operation of the motor 10, the liquid refrigerant can cool the cooling channel of the motor body 11, and meanwhile, the cooling channel of the motor body 11 is also used as an evaporator of the cooling cycle system, so that the liquid refrigerant is changed into a gas state again, and then enters the secondary compressor 30 through an external pipeline to be compressed again. Forming a circulating system.
Since the cooling flow path of the motor main body 11 generally requires a smaller amount of refrigerant for cooling, the cooling capacity of the sub-compressor 30 is required to be small, which means that the size of the impeller in the compressor is small compared to that of the impeller in the main compressor 20. Generally, the smaller the cooling capacity requirement and the smaller the impeller in the centrifugal compressor, the higher the requirement on the rotational speed. The gear pair 60 is therefore an increasing gear, the gear ratio of which is selected according to the requirement of the impeller speed in the primary and secondary compressors 20, 30.
In the above system, the type of the refrigerant used in the sub-compressor 30 is not limited, and therefore, when the specific volume of the refrigerant used is large, the rotation speed required for the impeller is small, and therefore, the rotation speed requirement can be satisfied without providing the gear pair 60. Gear set 60 is not essential in the system and may be eliminated in some cases.
In the technical scheme of this embodiment, because the requirement of vice compressor 30 refrigerating capacity is very little, therefore the heat transfer volume that condenser 40 required is not big, so though air-cooled heat exchange efficiency is lower, this system also can use the air-cooled mode heat transfer, only need increase the fan blade in the system, need not to increase cooling tower, water pump etc. again, also can directly place outdoors, need not the computer lab, and the cost can reduce greatly. Meanwhile, the condenser 40 generally adopts a water cooling mode for heat exchange. The water-cooling heat exchange is more and more mature in an air conditioner product system at present, the heat exchange efficiency is higher, the space occupation is smaller, and the space volume of the whole system can be reduced. However, a cooling water tower, a water pump and the like are required to be added to the water-cooling heat exchange system, and the water-cooling heat exchange system cannot be used outdoors generally due to condition limitation, and an independent machine room is required to be established. The manufacturing cost and the management cost of the system are increased.
The utility model also provides an air conditioning unit, this air conditioning unit include foretell compressor system, adopt foretell compressor system, can realize avoiding parts such as motor 10 and bearing to damage because the temperature risees easily to the temperature that effectively reduces motor 10, the long-term reliable operation of guarantee compressor system.
It should be noted that, the above technical scheme is particularly suitable for the cooling requirement of the high rotation speed of the motor in the water vapor air conditioning unit, and can ensure the stable operation of the high rotation speed motor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A compressor system, comprising:
the motor (10), the said motor (10) includes the body of the motor (11) and motor shaft (12) that stretches out from the said body of the motor (11);
a main compressor (20) in driving connection with the motor shaft (12), the main compressor (20) being used for compressing a cooling medium for cooling or heating;
a secondary compressor (30) drivingly connected to the motor shaft (12);
the condenser (40) is connected with the exhaust end of the auxiliary compressor (30) through a first cooling medium pipeline, the condenser (40) is connected with a cooling flow channel of the motor main body (11) through a second cooling medium pipeline, and the cooling flow channel of the motor main body (11) is connected with the suction end of the auxiliary compressor (30) through a third cooling medium pipeline;
and a throttle device (50) provided on the second cooling medium line.
2. The compressor system of claim 1, wherein the motor shaft (12) extends from both ends of the motor main body (11), respectively, the primary compressor (20) is located at a first side of the motor main body (11) and connected to a first end of the motor shaft (12), and the secondary compressor (30) is located at a second side of the motor main body (11) and connected to a second end of the motor shaft (12).
3. The compressor system of claim 1, wherein the secondary compressor (30) is coupled to the motor shaft (12) by a gear pair (60).
4. The compressor system of claim 3, wherein the gear pair (60) is a step-up gear pair.
5. The compressor system of claim 1, wherein the primary compressor (20) is a first centrifugal compressor.
6. The compressor system of claim 1, wherein the secondary compressor (30) is a second centrifugal compressor.
7. The compressor system of claim 1, wherein the throttling device (50) is an expansion valve.
8. Air conditioning assembly comprising a compressor system, characterized in that said compressor system is a compressor system according to any one of claims 1 to 7.
9. The air conditioning unit of claim 8, wherein the air conditioning unit is a steam air conditioning unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922208895.9U CN211261360U (en) | 2019-12-10 | 2019-12-10 | Compressor system and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922208895.9U CN211261360U (en) | 2019-12-10 | 2019-12-10 | Compressor system and air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211261360U true CN211261360U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922208895.9U Withdrawn - After Issue CN211261360U (en) | 2019-12-10 | 2019-12-10 | Compressor system and air conditioning unit |
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| CN (1) | CN211261360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944733A (en) * | 2019-12-10 | 2021-06-11 | 珠海格力电器股份有限公司 | Compressor system and air conditioning unit |
-
2019
- 2019-12-10 CN CN201922208895.9U patent/CN211261360U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944733A (en) * | 2019-12-10 | 2021-06-11 | 珠海格力电器股份有限公司 | Compressor system and air conditioning unit |
| CN112944733B (en) * | 2019-12-10 | 2024-08-09 | 珠海格力电器股份有限公司 | Compressor system and air conditioning unit |
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