CN201885479U - Variable frequency air cooling cold and hot water unit - Google Patents
Variable frequency air cooling cold and hot water unit Download PDFInfo
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- CN201885479U CN201885479U CN2010206693379U CN201020669337U CN201885479U CN 201885479 U CN201885479 U CN 201885479U CN 2010206693379 U CN2010206693379 U CN 2010206693379U CN 201020669337 U CN201020669337 U CN 201020669337U CN 201885479 U CN201885479 U CN 201885479U
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Abstract
The utility model discloses a variable frequency air cooling cold and hot water unit which comprises a closed refrigerant circulating loop; the closed refrigerant circulating loop comprises a direct current variable frequency compressor, a fin type condenser, an evaporator, a four-way valve, a gas-liquid separator, a liquid accumulator, an expansion valve, a first check valve, a second check valve, a third check valve and a fourth check valve. In the utility model, an alternating current variable frequency compressor is replaced with a direct current variable frequency compressor based on an alternating current variable frequency air cooling cold and hot water unit, a control system is replaced with the direct current variable frequency compressor; therefore, through the improvements, the problems of high noise and power consumption of a unit compressor and loss of a compressor rotor can be simultaneously solved efficiently, and the power consumption can also be simultaneously reduced.
Description
Technical field
The utility model relates to a kind of wind cooling cold and hot water unit, particularly a kind of frequency conversion wind cooling cold and hot water unit.
Background technology
The wind cooling cold and hot water unit is the common type of central air-conditioning industry, and it is that heat exchange by freon and water realizes the refrigeration of air-conditioning and heat-production functions.Each big air-conditioning company had released the wind cooling cold and hot water unit of deciding frequency according to the market demand in 2002, had solved the problem of home-use central air-conditioning.But this fixed control accuracy of wind cooling cold and hot water unit frequently is low, and the operation power consumption is high, noise is big.So released the AC frequency conversion central air-conditioning in the industry again in the end of the year 2006, solved the former the big problem that consumes energy to a certain extent, the AC frequency conversion compressor drum adopts the AC induction motor rotor structure, its operation principle is: stator produces rotating excitation field, rotor induced-current under the effect of stator rotating excitation field produces induced field, makes the rotor rotation through stator field and rotor field interaction.The basis of AC frequency conversion compressor rotation is the electromagnetic induction of stator and rotor, has also brought negative effects such as electromagnetic noise sensor and rotor loss when making the compressor rotation.
Summary of the invention
The utility model provides a kind of frequency conversion wind cooling cold and hot water unit that can reduce noise and energy consumption for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of frequency conversion wind cooling cold and hot water unit, comprise the sealing refrigerant circulation circuit, described sealing refrigerant circulation circuit comprises DC frequency-changeable compressor, finned cooler, evaporimeter, cross valve, gas-liquid separator, reservoir, expansion valve, first check valve, second check valve, the 3rd check valve and the 4th check valve, the exhaust outlet of described DC frequency-changeable compressor is connected with the exhaust port of described cross valve, refrigerant inlet under the condenser interface of described cross valve and the described finned cooler cooling condition is connected, refrigerant exit under the described finned cooler cooling condition is connected with the inlet of described first check valve, the outlet of described first check valve is connected with the inlet of described reservoir, the outlet of described reservoir is connected with the inlet of described expansion valve, the outlet of described expansion valve is connected with the inlet of described the 4th check valve, refrigerant inlet under the outlet of described the 4th check valve and the described evaporimeter cooling condition is connected, refrigerant exit under the described evaporimeter cooling condition is connected with the evaporimeter interface of described cross valve, the return-air interface of described cross valve is connected with the inlet of described gas-liquid separator, and the outlet of described gas-liquid separator is connected with the air entry of described DC frequency-changeable compressor; The inlet of described reservoir also is connected with the outlet of described second check valve, and the refrigerant inlet under the inlet of described second check valve and the described evaporimeter cooling condition is connected; The outlet of described expansion valve also is connected with the inlet of described the 3rd check valve, and the outlet of described the 3rd check valve is connected with refrigerant exit under the described finned cooler cooling condition
The utility model can also adopt following technical scheme:
Described expansion valve is an electric expansion valve.
Be connected with device for drying and filtering between the outlet of described reservoir and the inlet of described expansion valve.
Advantage and the good effect that the utlity model has are: on the basis of AC frequency conversion wind cooling cold and hot water unit the AC frequency conversion compressor is replaced by DC frequency-changeable compressor, control system is replaced by the such improvement of DC frequency-changing control system can have solved the big and problem high, the compressor drum loss that consumes energy of machine set compressor noise simultaneously effectively, also reduced energy consumption simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, DC frequency-changeable compressor, 2, finned cooler, 3, evaporimeter, 4, cross valve, 5, gas-liquid separator, 6, reservoir, 7, electric expansion valve, 8, first check valve, 9, second check valve, the 10, the 3rd check valve, the 11, the 4th check valve, 12, device for drying and filtering.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, solid arrow is a kind of refrigeration cycle among the figure, dotted arrow is for heating circulation, a kind of frequency conversion wind cooling cold and hot water unit, comprise the sealing refrigerant circulation circuit, described sealing refrigerant circulation circuit comprises DC frequency-changeable compressor 1, finned cooler 2, evaporimeter 3, cross valve 4, gas-liquid separator 5, reservoir 6, expansion valve 7, first check valve 8, second check valve 9, the 3rd check valve 10 and the 4th check valve 11, the exhaust outlet of described DC frequency-changeable compressor 1 is connected with the exhaust port of described cross valve 4, refrigerant inlet under the condenser interface of described cross valve 4 and described finned cooler 2 cooling conditions is connected, refrigerant exit under described finned cooler 2 cooling conditions is connected with the inlet of described first check valve 8, the outlet of described first check valve 8 is connected with the inlet of described reservoir 6, the outlet of described reservoir 6 is connected with the inlet of described expansion valve 7, be connected with device for drying and filtering 12 between the inlet of the outlet of described reservoir 6 and described expansion valve 7, the outlet of described expansion valve 7 is connected with the inlet of described the 4th check valve 11, refrigerant inlet under the outlet of described the 4th check valve 11 and described evaporimeter 3 cooling conditions is connected, refrigerant exit under described evaporimeter 3 cooling conditions is connected with the evaporimeter interface of described cross valve 4, the return-air interface of described cross valve 4 is connected with the inlet of described gas-liquid separator 5, and the outlet of described gas-liquid separator 5 is connected with the air entry of described DC frequency-changeable compressor 1; The inlet of described reservoir 6 also is connected with the outlet of described second check valve 9, and the refrigerant inlet under the inlet of described second check valve 9 and described evaporimeter 3 cooling conditions is connected; The outlet of described expansion valve 7 also is connected with the inlet of described the 3rd check valve 10, and the outlet of described the 3rd check valve 10 is connected with refrigerant exit under described finned cooler 2 cooling conditions.Expansion valve 7 is an electric expansion valve in the present embodiment.
Operation principle of the present utility model:
During the unit refrigerating operaton, DC frequency-changeable compressor 1 sucks gas-liquid separator 5 low-pressure low-temperature refrigerant gas, discharge gases at high pressure after the compressed supercharging, enter finned cooler 2 through cross valve 4, in finned cooler 2 with the air heat exchange after, be cooled to highly pressurised liquid, then by first check valve 8, flow into reservoir 6, liquid is removed moisture and impurity after filtering by device for drying and filtering 12, arrive electric expansion valve 7 again, through the 4th check valve 11, puffing becomes the cold-producing medium liquid-vapor mixture of low-pressure low-temperature to highly pressurised liquid after electric expansion valve 7 throttlings, evenly enters in the evaporimeter 3, at this, refrigerant liquid absorbs heat in evaporimeter 3, water is cooled, and cooled water is delivered to heat in the indoor fan coil pipe absorption chamber.Low-pressure low-temperature gas comes out from evaporimeter 3, enters gas-liquid separator 5 through cross valve 4, and the low-pressure low-temperature refrigerant of gaseous state enters the air entry of DC frequency-changeable compressor 1 after gas-liquid separation, and the fluid that compressor is got back in gas-liquid separator 5 assurances all is a gas.So far, finish a kind of refrigeration cycle.During the unit heating operation, DC frequency-changeable compressor 1 sucks gas-liquid separator 5 low-pressure low-temperature refrigerant gas, discharge gases at high pressure after the compressed supercharging, enter evaporimeter 3 through cross valve 4, in evaporimeter 3 with the heat exchange of indoor fan coil pipe backwater after, be sent to the indoor fan coil pipe behind the water absorption heat and carry out heat exchange, cold-producing medium is cooled to highly pressurised liquid, then by second check valve 9, flow into reservoir 6, liquid is removed moisture and impurity after filtering by device for drying and filtering 12, arrive electric expansion valve 7 again, through the 3rd check valve 10, puffing becomes the cold-producing medium liquid-vapor mixture of low-pressure low-temperature to highly pressurised liquid after electric expansion valve 7 throttlings, evenly enters in the finned cooler 2, at this, refrigerant liquid carries out heat exchange at finned cooler 2 and air.Low-pressure low-temperature gas comes out from condenser 2, enters gas-liquid separator 5 through cross valve 4, and after gas-liquid separation, gaseous coolant enters the air entry of frequency-changeable compressor 1, and the fluid that compressor is got back in gas-liquid separator 5 assurances all is a gas.So far, finish one and heat circulation.DC frequency-changeable compressor 1 is adjusted its running frequency with the impact of low-frequency start minimizing to electrical network according to indoor temperature.The open degree that electric expansion valve 7 comes by-pass valve control according to the information that the temperature sensor that is arranged on many places such as its import and export, compressor suction duct is collected with the purpose that reaches fast-refrigerating, heats, thereby guarantees that the refrigeration system operation is energy-efficient.
Above-mentioned unit adopts DC frequency-changeable compressor, and the operating frequency of compressor is adjusted in variation that can cold according to the room (heat) load automatically.DC frequency converting air-conditioner has been avoided the caused sense of discomfort of room temperature acute variation with lower frequency run after reaching design temperature.Hour operating frequency is low when loading, and the power that this moment, compressor consumed is little, has avoided frequent start-stop simultaneously, thus power saving more.
Above-mentioned unit is converted to dc source to the 50Hz power frequency AC, and deliver to the power model main circuit, power model is subjected to microcomputerized control too, what module that different is was exported is the dc source of voltage variable, what compressor used is direct current generator, the DC frequency-changeable compressor rotor adopts rare earth permanent-magnetic material to be made, and its operation principle is: stator produces rotating excitation field and the rotor permanent magnetic field directly acts on, and realizes compressor operation.Can change rotating speed of motor by the DC voltage that motor is given in change, direct current varied-frequency air conditioner does not have the inversion link, there be not the electromagnetic induction effect of stator rotating excitation field to rotor in DC frequency-changeable compressor, the electromagnetic noise and the rotor loss of AC frequency conversion compressor have been overcome, have than the low characteristics of AC frequency conversion compressor efficiency high noisy, DC frequency-changeable compressor efficient is than the high 10%-30% of AC frequency conversion compressor, and noise hangs down 5 decibels-10 decibels.
DC frequency-changing wind cooling cold and hot water integral controller can be regulated compressor according to environment temperature and temperature sensor detected temperatures, it is high more promptly to survey water temperature, operating frequency is big more, so that air-conditioning fast-refrigerating, water temperature is more near design temperature, and operating frequency is just more little, and the refrigerating capacity that provides is also more little, to keep water temperature near design temperature, temperature fluctuation is little.Otherwise heat.Because unit control does not need not shut down, avoided of the loss of picture common compressor frequent starting to water temperature, saved electric energy.
Claims (3)
1. frequency conversion wind cooling cold and hot water unit, comprise the sealing refrigerant circulation circuit, it is characterized in that, described sealing refrigerant circulation circuit comprises DC frequency-changeable compressor, finned cooler, evaporimeter, cross valve, gas-liquid separator, reservoir, expansion valve, first check valve, second check valve, the 3rd check valve and the 4th check valve, the exhaust outlet of described DC frequency-changeable compressor is connected with the exhaust port of described cross valve, refrigerant inlet under the condenser interface of described cross valve and the described finned cooler cooling condition is connected, refrigerant exit under the described finned cooler cooling condition is connected with the inlet of described first check valve, the outlet of described first check valve is connected with the inlet of described reservoir, the outlet of described reservoir is connected with the inlet of described expansion valve, the outlet of described expansion valve is connected with the inlet of described the 4th check valve, refrigerant inlet under the outlet of described the 4th check valve and the described evaporimeter cooling condition is connected, refrigerant exit under the described evaporimeter cooling condition is connected with the evaporimeter interface of described cross valve, the return-air interface of described cross valve is connected with the inlet of described gas-liquid separator, and the outlet of described gas-liquid separator is connected with the air entry of described DC frequency-changeable compressor; The inlet of described reservoir also is connected with the outlet of described second check valve, and the refrigerant inlet under the inlet of described second check valve and the described evaporimeter cooling condition is connected; The outlet of described expansion valve also is connected with the inlet of described the 3rd check valve, and the outlet of described the 3rd check valve is connected with refrigerant exit under the described finned cooler cooling condition.
2. frequency conversion wind cooling cold and hot water unit according to claim 1 is characterized in that described expansion valve is an electric expansion valve.
3. frequency conversion wind cooling cold and hot water unit according to claim 1 and 2 is characterized in that, is connected with device for drying and filtering between the outlet of described reservoir and the inlet of described expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206693379U CN201885479U (en) | 2010-12-20 | 2010-12-20 | Variable frequency air cooling cold and hot water unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206693379U CN201885479U (en) | 2010-12-20 | 2010-12-20 | Variable frequency air cooling cold and hot water unit |
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| CN201885479U true CN201885479U (en) | 2011-06-29 |
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| CN2010206693379U Expired - Fee Related CN201885479U (en) | 2010-12-20 | 2010-12-20 | Variable frequency air cooling cold and hot water unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104883005A (en) * | 2015-06-11 | 2015-09-02 | 广东美的暖通设备有限公司 | Motor cooling structure, air conditioner, and motor cooling method |
| CN106288509A (en) * | 2015-05-22 | 2017-01-04 | 南京五洲制冷集团有限公司 | A kind of plate evaporating condensation type water chiller-heater unit |
| CN106288506A (en) * | 2015-05-18 | 2017-01-04 | 重庆通用贝园制冷空调设备有限责任公司 | A kind of air conditioning system |
| CN106763909A (en) * | 2017-01-21 | 2017-05-31 | 佛山市德天电器有限公司 | Three hole check valves and the frostless heat pump with three hole check valves |
| CN107763888A (en) * | 2017-11-20 | 2018-03-06 | 美意(浙江)空调设备有限公司 | A kind of dynamic degree of superheat control system |
| CN109945433A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | Temperature control method and air conditioner |
| CN110332725A (en) * | 2019-05-30 | 2019-10-15 | 武晓宁 | CO2 twin-stage frequency conversion air friction drag |
-
2010
- 2010-12-20 CN CN2010206693379U patent/CN201885479U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288506A (en) * | 2015-05-18 | 2017-01-04 | 重庆通用贝园制冷空调设备有限责任公司 | A kind of air conditioning system |
| CN106288509A (en) * | 2015-05-22 | 2017-01-04 | 南京五洲制冷集团有限公司 | A kind of plate evaporating condensation type water chiller-heater unit |
| CN104883005A (en) * | 2015-06-11 | 2015-09-02 | 广东美的暖通设备有限公司 | Motor cooling structure, air conditioner, and motor cooling method |
| CN106763909A (en) * | 2017-01-21 | 2017-05-31 | 佛山市德天电器有限公司 | Three hole check valves and the frostless heat pump with three hole check valves |
| CN106763909B (en) * | 2017-01-21 | 2023-04-18 | 佛山市德天电器有限公司 | Three-hole one-way valve and frostless heat pump system with three-hole one-way valve |
| CN107763888A (en) * | 2017-11-20 | 2018-03-06 | 美意(浙江)空调设备有限公司 | A kind of dynamic degree of superheat control system |
| CN109945433A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | Temperature control method and air conditioner |
| CN110332725A (en) * | 2019-05-30 | 2019-10-15 | 武晓宁 | CO2 twin-stage frequency conversion air friction drag |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20131220 |