CN111189108A - Direct refrigeration type magnetic suspension variable frequency air conditioning unit - Google Patents
Direct refrigeration type magnetic suspension variable frequency air conditioning unit Download PDFInfo
- Publication number
- CN111189108A CN111189108A CN201811357562.6A CN201811357562A CN111189108A CN 111189108 A CN111189108 A CN 111189108A CN 201811357562 A CN201811357562 A CN 201811357562A CN 111189108 A CN111189108 A CN 111189108A
- Authority
- CN
- China
- Prior art keywords
- air
- variable frequency
- section
- magnetic suspension
- air conditioning
- 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
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 37
- 239000000725 suspension Substances 0.000 title claims abstract description 15
- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000001704 evaporation Methods 0.000 claims abstract description 5
- 230000008020 evaporation Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A direct refrigeration type magnetic suspension variable frequency air conditioning unit relates to the technical field of refrigeration air conditioners. The unit comprises a compressor, a shell-and-tube condenser, a throttling device and an air-conditioning box which are sequentially connected to form a loop. The heat of the shell and tube condenser is discharged to the outside through the cooling tower, and the air-conditioning box sequentially comprises an air inlet section, a filtering section, a cooling section and an air supply section from bottom to top. The structure is characterized in that the compressor adopts a magnetic suspension variable frequency centrifugal compressor, a cooling section of the air-conditioning box is provided with a direct evaporation type heat exchanger, and an air supply section of the air-conditioning box is provided with a variable frequency centrifugal fan. Compared with the prior art, the invention can flexibly adjust according to the load change of the building, improve the energy efficiency of the refrigerating system, simplify the system structure and save the operating cost of the air-conditioning system.
Description
Technical Field
The invention relates to the technical field of refrigeration air conditioners, in particular to a direct refrigeration type magnetic suspension variable frequency air conditioning unit.
Background
At present, in a ventilation air-conditioning system of a large public building space, a cold water unit and the tail end of an air-conditioning box are adopted for cooling and dehumidifying. Referring to fig. 1, the system comprises a compressor 1, a shell-and-tube condenser 2, a throttle device 3, a shell-and-tube evaporator 4 and an air conditioning box 6 connected in series to form a loop. The heat of the shell-and-tube condenser 2 is discharged to the outdoor through the cooling tower 7, the compressor 1 adopts a screw compressor, the air-conditioning box 6 sequentially comprises an air inlet section, a filtering section, a cooling section and an air supply section from bottom to top, the cooling section of the air-conditioning box 6 is provided with a surface cooler, and the air supply section is provided with a centrifugal fan. The shell-and-tube evaporator 4 is connected with a surface cooler in the air-conditioning box 6 through a chilled water system, return air (outdoor air or mixed air) is cooled and dehumidified in the surface cooler, and is sent out through a centrifugal fan. The heat in the condenser 2 is rejected from the cooling tower 7 to the outdoor environment through the cooling water system. The system has complex pipeline configuration and poorer variable load regulation capability of the chilled water system. Meanwhile, the pipeline water chilling unit is low in part load energy efficiency, so that the comprehensive energy efficiency ratio of the system is low and the operation cost is high when the system operates in the whole air conditioning season.
Disclosure of Invention
Aiming at the problems of the water chilling unit in the prior art, the invention aims to provide a direct refrigeration type magnetic suspension variable frequency air conditioning unit. The air conditioner can be flexibly adjusted according to the load change of a building, the energy efficiency of a refrigerating system can be improved, the system structure is simplified, and the operating cost of the air conditioning system is saved.
In order to achieve the above object, the technical solution of the present invention is implemented as follows:
a direct refrigeration type magnetic suspension variable frequency air conditioning unit comprises a compressor, a shell and tube condenser, a throttling device and an air conditioning box which are sequentially connected to form a loop. The heat of the shell and tube condenser is discharged to the outside through the cooling tower, and the air-conditioning box sequentially comprises an air inlet section, a filtering section, a cooling section and an air supply section from bottom to top. The structure is characterized in that the compressor adopts a magnetic suspension variable frequency centrifugal compressor, a cooling section of the air-conditioning box is provided with a direct evaporation type heat exchanger, and an air supply section of the air-conditioning box is provided with a variable frequency centrifugal fan.
Because the structure is adopted, the direct evaporation type heat exchanger replaces a shell-tube evaporator and a surface cooler in the prior art, and the magnetic suspension variable frequency centrifugal compressor replaces a screw compressor in the prior art. Compared with the prior art, the invention has the beneficial effects that:
(1) the magnetic suspension oil-free variable frequency centrifugal compressor is adopted, the refrigerating system is simple, a complex oil circuit system is avoided, and the operation is safe and reliable.
(2) The shell-tube evaporator in the prior art is omitted, the initial investment is reduced, and the energy consumption of chilled water delivery is reduced.
(3) The compressor and the air supply section fan adopt a direct-current variable-frequency control technology, partial load adjustment is flexible, and the comprehensive energy efficiency ratio of the unit is higher.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic diagram of a prior art air conditioning unit;
fig. 2 is a schematic structural diagram of an air conditioning unit according to the present invention.
Detailed Description
Referring to fig. 2, the direct refrigeration type magnetic suspension variable frequency air conditioning unit comprises a compressor 1, a shell and tube condenser 2, a throttling device 3 and an air conditioning box 6 which are sequentially connected to form a loop. The heat of the shell-and-tube condenser 2 is discharged to the outside through a cooling tower 7, and the compressor 1 adopts a magnetic suspension variable-frequency centrifugal compressor. The air-conditioning box 6 sequentially comprises an air inlet section, a filtering section, a cooling section and an air supply section from bottom to top, the cooling section of the air-conditioning box 6 is provided with a direct evaporation type heat exchanger, and the air supply section is provided with a variable-frequency centrifugal fan.
When the air-conditioning unit works, return air (outdoor air or mixed air) enters from the air inlet section of the air-conditioning box 6, enters the cooling section after being purified at the filtering section, and directly exchanges heat with a refrigerant in the direct evaporative heat exchanger. After the air is cooled and dehumidified, the air is sent out through a variable-frequency centrifugal fan in an air supply section. The heat in the condenser 2 is rejected from the cooling tower 7 to the outdoor environment through the cooling water system.
Claims (1)
1. The direct refrigeration type magnetic suspension variable frequency air conditioning unit comprises a compressor (1), a shell and tube condenser (2), a throttling device (3) and an air conditioning box (6) which are sequentially connected to form a loop, wherein the heat of the shell and tube condenser (2) is discharged outdoors through a cooling tower (7), the air conditioning box (6) sequentially comprises an air inlet section, a filtering section, a cooling section and an air supply section from bottom to top, and the direct refrigeration type magnetic suspension variable frequency air conditioning unit is characterized in that the compressor (1) adopts a magnetic suspension variable frequency centrifugal compressor, the cooling section of the air conditioning box (6) is provided with a direct evaporation type heat exchanger, and the air supply section of the air conditioning box (6) is provided with a variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811357562.6A CN111189108A (en) | 2018-11-15 | 2018-11-15 | Direct refrigeration type magnetic suspension variable frequency air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811357562.6A CN111189108A (en) | 2018-11-15 | 2018-11-15 | Direct refrigeration type magnetic suspension variable frequency air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111189108A true CN111189108A (en) | 2020-05-22 |
Family
ID=70705290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811357562.6A Pending CN111189108A (en) | 2018-11-15 | 2018-11-15 | Direct refrigeration type magnetic suspension variable frequency air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111189108A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579362U (en) * | 1992-03-18 | 1993-10-29 | 住友重機械工業株式会社 | Air conditioning equipment in a magnetic levitation train equipped with a helium compressor |
| CN103953994A (en) * | 2014-05-23 | 2014-07-30 | 广东国得科技发展有限公司 | Efficient and energy-saving refrigeration air conditioner group integration and working method thereof |
| CN205980031U (en) * | 2016-08-22 | 2017-02-22 | 上海日立电器有限公司 | Fresh air conditioning unit system |
| CN209325916U (en) * | 2018-11-15 | 2019-08-30 | 同方人工环境有限公司 | Direct refrigeration-type magnetic suspension convertible frequency air-conditioner unit |
-
2018
- 2018-11-15 CN CN201811357562.6A patent/CN111189108A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579362U (en) * | 1992-03-18 | 1993-10-29 | 住友重機械工業株式会社 | Air conditioning equipment in a magnetic levitation train equipped with a helium compressor |
| CN103953994A (en) * | 2014-05-23 | 2014-07-30 | 广东国得科技发展有限公司 | Efficient and energy-saving refrigeration air conditioner group integration and working method thereof |
| CN205980031U (en) * | 2016-08-22 | 2017-02-22 | 上海日立电器有限公司 | Fresh air conditioning unit system |
| CN209325916U (en) * | 2018-11-15 | 2019-08-30 | 同方人工环境有限公司 | Direct refrigeration-type magnetic suspension convertible frequency air-conditioner unit |
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