CN105987535A - High-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of refrigerant - Google Patents
High-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of refrigerant Download PDFInfo
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- CN105987535A CN105987535A CN201510054590.0A CN201510054590A CN105987535A CN 105987535 A CN105987535 A CN 105987535A CN 201510054590 A CN201510054590 A CN 201510054590A CN 105987535 A CN105987535 A CN 105987535A
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Abstract
The invention discloses a high-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of a refrigerant, comprising a high-capacity multi-split refrigerating unit for ultra-long-distance conveying of a refrigerant, a high-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of the refrigerant, a high-capacity multi-split refrigerating unit for ultra-long-distance conveying of the refrigerant using natural cooling circulatory refrigerating, and a high-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of the refrigerant using natural cooling circulatory refrigerating; both the high-capacity multi-air air-condition units for ultra-long-distance conveying of the refrigerant comprise an outdoor unit and an indoor unit, the outdoor unit comprises an outdoor heat exchanger, a liquid storage tank, a first power conveying pump, a gas-liquid separator, a compressor and an oil separator. The high-capacity multi-split air-condition heat pump unit meets the demand of a large-sized building for cold and heat load, also meets the demand of small- and medium-sized buildings for cold and heat load, is efficient and energy-saving, may provide ultra-long-distance conveying of a refrigerating medium without complex variable frequency drive modules, and is simple to control and high in system reliability.
Description
Technical field
The present invention relates to a kind of air conditioner and heat pump unit, the large-capacity multiple air conditioner of a kind of overlength distance conveying cold-producing medium is adjusted
Source pump.
Background technology
Along with life, comfortable working environment requirement are improved constantly by industrial technology quality and people, domestic to central air-conditioning
Demand also by steady growth.Central air-conditioning not only has started to apply to residential quarters at present, it is achieved central heating and cooling,
In industrial circle and commercial kitchen area also large-scale application.
Central air-conditioning is the systems focusing on air conditioning area cooling and heating load, and the cold and hot amount that its unit produces is by necessarily
Medium be transported to what air-conditioned room went, according to the difference of central air-conditioning pumped (conveying) medium, common central air-conditioning is segmented into three
The form of kind: the wind system with air as pumped (conveying) medium, such as air-duct-type air-conditioner unit；Water system with water as pumped (conveying) medium, as
Centrifuge, screw machine, module machine；Refrigerant system with cold-producing medium as pumped (conveying) medium, such as multi-connected machine.Wind system is small-sized
Focusing on formula central air conditioner system, the air after dependence processes bears indoor cooling and heating load, and wind system is more suited to family
Install, it is impossible to meet heavy construction place and use.The unit of water system is that main frame inner compressor compresses fluorinated refrigerant, then
In heat exchanger in main frame, evaporation endothermic swaps with water again, then cold water the lowest for temperature is transported to indoor set, with
Air heat-exchange reaches refrigeration.This units' installation is complicated, safeguards that running cost is high, and there is the risk leaked,
Once leak, to environment, instrument and equipment in building, cause irremediable loss.To multiple on-line system, due to pressure
Contracting machine finite capacity, unit capacity is limited, and for realizing maximizing, the method generally used is set modules combination, current row
Single module heap(ed) capacity 20 in the industry, maximum four block combiner, it is possible to achieve whole unit 80.
Prior art is difficult to unit capacity large again, makes the use of multiple on-line system be limited to.It addition, compression
Acc power is limited, and pipeline exists crushing in addition, causes cold-producing medium fed distance limited, the most maximum one way 170m, it is impossible to
Realize overlength distance conveying cold-producing medium.
Therefore design develops a kind of vast capacity to meet building hot-cool demand, realizes overlength distance conveying system simultaneously
The energy-efficient air conditioning unit tool of refrigerant medium is of great significance.
Summary of the invention
It is an object of the invention to provide a kind of energy-efficient, control simple overlength distance conveying cold-producing medium Large Copacity multi-joint
Formula air conditioner and heat pump unit, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
The large-capacity multiple air conditioner of a kind of overlength distance conveying cold-producing medium adjusts unit, including the great Rong of overlength distance conveying cold-producing medium
Amount multiple refrigeration unit, the large-capacity multiple air conditioner of overlength distance conveying cold-producing medium are adjusted source pump, are used natural cooling to follow
The Large Copacity multiple refrigeration unit of the overlength distance conveying cold-producing medium of ring refrigeration is super remote with employing natural cooling circularly cooling
The large-capacity multiple air conditioner of distance conveying cold-producing medium adjusts source pump, the Large Copacity multiple of described overlength distance conveying cold-producing medium
Air conditioning unit off-premises station and the indoor set of all including, described off-premises station include outdoor heat exchanger, fluid reservoir, the first power delivery pump,
Gas-liquid separator, compressor and oil eliminator, described indoor set includes filter, vaporizer, indoor set choke valve and blower fan,
Described filter includes the first filter and the second filter；The Large Copacity multiple refrigeration of described overlength distance conveying cold-producing medium
In unit, compressor connects oil eliminator, oil return capillary tube and gas-liquid separator, described compressor return air respectively by exhaustor
Suction temperature sensor Ts is installed at pipe, the trachea that compressor is connected with oil eliminator is sequentially provided with exhaust gas temperature sensor
Td and high-voltage switch gear HPS, the muffler that compressor is connected with gas-liquid separator is provided with low-pressure sensor Ps, oil return
The capillary tube other end connects oil eliminator by trachea, and the outlet of oil eliminator connects the first check valve by trachea, and first is single
To the valve other end by trachea junction chamber external heat exchanger, the trachea that the first check valve is connected with outdoor heat exchanger is provided with high pressure pressure
Force transducer Pd1, outdoor heat exchanger is provided with outdoor environment temperature sensor Tao, and liquid is passed through in the outlet of outdoor heat exchanger
Pipe is sequentially connected with fluid reservoir, the first power delivery pump and liquid pipe stop valve, described fluid reservoir is provided with cold-producing medium liquid measure and controls
Device, the liquid pipe stop valve other end connects the first filter in many group indoor sets respectively by liquid pipe, the first filter another
Hold and be sequentially connected with, by liquid pipe, the liquid that indoor set choke valve, the second filter and vaporizer, the second filter and vaporizer connect
Pipe is provided with interior machine liquid pipe temperature sensor Te2, is designed with blower fan in each indoor set, and the vaporizer other end passes through trachea
Connecting trachea stop valve, the trachea stop valve other end connects gas-liquid separator by trachea.
As the further technical scheme of the present invention: the large-capacity multiple air conditioner of described overlength distance conveying cold-producing medium adjusts heat pump machine
Being additionally provided with cross valve in group between first check valve and trachea stop valve, cross valve connects outdoor heat exchange respectively also by connecting tube
Device and gas-liquid separator, the isocon of outdoor heat exchanger is provided with outdoor heat exchanger coil temperature sensor Tdef, and outdoor is changed
The second check valve, the 3rd filter, the 4th filter, the second three-way valve, the 3rd list it is also associated with between hot device and fluid reservoir
To valve, the second power delivery pump and one or two off-premises station electric expansion valve, described outdoor heat exchanger connects the by liquid pipe
Three filters, the 3rd filter other end connects the second check valve and one or two off-premises station electronic expansion respectively by liquid pipe
By liquid pipe connection the 4th filter after valve, the off-premises station electric expansion valve other end and the second check valve other end parallel connection, the 4th
The filter other end connects the second three-way valve by liquid pipe, and the second interface of the second three-way valve passes sequentially through the 3rd check valve and
Two power delivery pumps connect fluid reservoir, and the 3rd interface of the second three-way valve is directly connected to fluid reservoir, described fluid reservoir and liquid pipe and cuts
Only it is additionally provided with the 3rd three-way valve between valve.
As the further technical scheme of the present invention: be additionally provided with the first threeway between described gas-liquid separator and trachea stop valve
Valve, the first three-way valve other end is connected on the trachea between the first check valve and outdoor heat exchanger by trachea.
As the further technical scheme of the present invention: be additionally provided with the first pressure balance between described fluid reservoir and gas-liquid separator
Pipe, the first pressure-equalizing pipe is provided with the first electromagnetic valve.
As the further technical scheme of the present invention: described refrigerant liquid amount control device and the first power delivery pump composition refrigeration
Agent liquid measure control system, described refrigerant liquid amount control device uses liquidometer, pressure transducer or target flow control device to examine
Surveying, when refrigerant liquid amount control device uses pressure transducer to detect, described pressure transducer includes top pressure sensor
Pd2 and base pressure sensor Pd3, when refrigerant liquid amount control device uses target flow control device to detect, described target stream
Control device and include the first target stream switch, the second target stream switch and the second electromagnetic valve, described first target stream switch, the second target stream
Switch and the second electromagnetic valve are all connected with fluid reservoir, and the first target stream switch other end connects the second target stream switch other end and electricity respectively
The magnet valve other end.
As the further technical scheme of the present invention: be provided with the 4th between described first power delivery pump and liquid pipe stop valve unidirectional
Valve.
As the further technical scheme of the present invention: be additionally provided with the second pressure balance between described fluid reservoir and the second electromagnetic valve
Pipe.
As the present invention further technical scheme: described refrigerant liquid amount control device is target flow control device, and target stream
The second electromagnetic valve controlled in device replaces with the 4th three-way valve.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention uses helical-lobe compressor, and maximum can realize the vast capacity unit of 400 standard tons, meets the cold of building
Thermal load demands, it would however also be possible to employ one or more screw compressor or rotor compressor parallel way, meets small and medium construction
The cooling and heating load demand of thing, compressor takes service intermittent mode, and the liquid refrigerant of generation is stored in high pressure fluid reservoir,
Energy-efficient, it is possible to achieve overlength distance conveying refrigerant medium, fed distance can be up to more than 1000m, it is not necessary to multiple
Miscellaneous frequency conversion drive module, controls simple, and system reliability is high.
Large Copacity multiple refrigeration unit and the Large Copacity of overlength distance conveying cold-producing medium including overlength distance conveying cold-producing medium
Multiple air conditioner heat pump unit
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the Large Copacity multiple refrigeration unit of overlength distance conveying cold-producing medium in the present invention.
Fig. 2 is the schematic diagram of the Large Copacity multiple source pump of overlength distance conveying cold-producing medium in the present invention.
Fig. 3 is the principle that in the present invention, the Large Copacity multiple refrigeration unit of overlength distance conveying cold-producing medium realizes natural cooling
Figure.
Fig. 4 is the principle that in the present invention, the Large Copacity multiple source pump of overlength distance conveying cold-producing medium realizes natural cooling
Figure.
Fig. 5 is that in the present invention, the Large Copacity multiple refrigeration unit of overlength distance conveying cold-producing medium is provided with the first pressure-equalizing pipe
Schematic diagram.
Fig. 6 be overlength distance of the present invention conveying cold-producing medium Large Copacity multiple refrigeration unit in refrigerant liquid amount control device be
The schematic diagram of liquidometer.
Fig. 7 be overlength distance of the present invention conveying cold-producing medium Large Copacity multiple refrigeration unit in refrigerant liquid amount control device be
The schematic diagram of pressure transducer.
Fig. 8 be overlength distance of the present invention conveying cold-producing medium Large Copacity multiple refrigeration unit in refrigerant liquid amount control device be
The schematic diagram of target flow control device.
Fig. 9 is that in the present invention, the Large Copacity multiple refrigeration unit of the overlength distance conveying cold-producing medium flow control device that hits is provided with the
The schematic diagram of two pressure-equalizing pipes.
Figure 10 be overlength distance of the present invention conveying cold-producing medium Large Copacity multiple source pump in refrigerant liquid amount control device
Schematic diagram.
In figure: 1-compressor；2-oil return capillary tube；3-oil eliminator；4-the first check valve；5-outdoor heat exchanger；6-first
Filter；7-fluid reservoir；8-the first power delivery pump；9-liquid pipe stop valve；10-the second filter；11-indoor set choke valve；
12-vaporizer；13-blower fan；14-trachea stop valve；15-refrigerant liquid amount control device；16-gas-liquid separator；17-first
Electromagnetic valve；18-the first pressure-equalizing pipe；19-liquidometer；20-the first target stream switchs；21-the second target stream switchs；22-second
Electromagnetic valve；23-the 4th check valve；24-the second pressure-equalizing pipe；25-the first three-way valve；26-cross valve；27-outdoor is dynamo-electric
Sub-expansion valve；29-the second check valve；30-the 3rd filter；31-the 4th filter；32-the second three-way valve；33-the 3rd is single
To valve；34-the second power delivery pump；35-the 3rd three-way valve；36-the 4th three-way valve.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Referring to Fig. 1-4, the large-capacity multiple air conditioner of a kind of overlength distance conveying cold-producing medium adjusts unit, defeated including overlength distance
Send the Large Copacity multiple refrigeration unit of cold-producing medium, overlength distance conveying cold-producing medium large-capacity multiple air conditioner adjust source pump,
Use the Large Copacity multiple refrigeration unit of the overlength distance conveying cold-producing medium of natural cooling circularly cooling and use natural cooling
The large-capacity multiple air conditioner of the overlength distance conveying cold-producing medium of circularly cooling adjusts source pump, described overlength distance conveying cold-producing medium
Large-capacity multiple air conditioner adjust unit all include off-premises station and indoor set, indoor set total capacity less than off-premises station ability 130
%, described off-premises station include outdoor heat exchanger 5, fluid reservoir the 7, first power delivery pump 8, gas-liquid separator 16,
Compressor 1 and oil eliminator 3, described indoor set includes filter, vaporizer 12, electric expansion valve 11 and blower fan 13,
Described filter includes the first filter 6 and the second filter 10.Described off-premises station and indoor set are each provided with controller to be carried out
Independent control, is connected by connection between outdoor controller and indoor set controller, it is achieved between indoor set and off-premises station
Communication, indoor set receives remote controller or the start of line control machine or shutdown command, and indoor set passes to off-premises station this instruction,
Off-premises station controls its each parts.
In the Large Copacity multiple refrigeration unit of described overlength distance conveying cold-producing medium, compressor 1 connects oil respectively by exhaustor
Separator 3, oil return capillary tube 2 and gas-liquid separator 16, be provided with suction temperature sensor at described compressor 1 muffler
Ts, the trachea that compressor 1 is connected with oil eliminator 3 is sequentially provided with exhaust gas temperature sensor Td and high-voltage switch gear HPS,
The muffler that compressor 1 is connected with gas-liquid separator 16 is provided with low-pressure sensor Ps, oil return capillary tube 2 other end
Connecting oil eliminator 3 by trachea, the outlet of oil eliminator 3 connects the first check valve 4, the first check valve 4 by trachea
The other end passes through trachea junction chamber external heat exchanger 5, and the trachea that the first check valve 4 is connected with outdoor heat exchanger 5 is provided with high pressure
Pressure transducer Pd1, outdoor heat exchanger 5 is provided with outdoor environment temperature sensor Tao, the outlet of outdoor heat exchanger 5
It is sequentially connected with fluid reservoir the 7, first power delivery pump 8 and liquid pipe stop valve 9 by liquid pipe, utilizes the first power delivery pump 8
Realize the overlength distance conveying of cold-producing medium in Large Copacity multiple refrigeration unit, described fluid reservoir 7 is provided with cold-producing medium liquid measure
Controlling device 15, liquid pipe stop valve 9 other end connects to organize the first filter 6 in indoor set respectively more by liquid pipe, and first
Filter 6 other end is sequentially connected with indoor set choke valve the 11, second filter 10 and vaporizer 12, indoor set by liquid pipe
Choke valve 11 can be electric expansion valve, and the liquid pipe that the second filter 10 and vaporizer 12 connect is provided with interior machine liquid Guan Wen
Degree sensor Te2, is equipped with blower fan 13 in every indoor set, vaporizer 12 other end connects trachea stop valve by trachea
14, trachea stop valve 14 other end connects gas-liquid separator 16 by trachea.
Referring to Fig. 2, the large-capacity multiple air conditioner of described overlength distance conveying cold-producing medium adjusts the first check valve 4 in source pump
And between trachea stop valve 14, it being additionally provided with cross valve 26, cross valve 26 is also by connecting tube junction chamber external heat exchanger 5 He respectively
Gas-liquid separator 16, the isocon of outdoor heat exchanger 5 is provided with outdoor heat exchanger coil temperature sensor Tdef, and outdoor is changed
The second check valve the 29, the 3rd filter the 30, the 4th filter the 31, the 2nd 3 it is also associated with between hot device 5 and fluid reservoir 7
Logical valve the 32, the 3rd check valve the 33, second power delivery pump 34 and one or two off-premises station electric expansion valve 27, utilize the
It is defeated that one power delivery pump 8 and the second power delivery pump 34 realize the overlength distance of cold-producing medium in Large Copacity multiple source pump
Sending, described outdoor heat exchanger 5 connects the 3rd filter 30 by liquid pipe, and the 3rd filter 30 other end is by liquid pipe respectively
Connect the second check valve 29 and one or two off-premises station electric expansion valve 27, off-premises station electric expansion valve 27 other end and the
Connecting the 4th filter 31 by liquid pipe after two check valve 29 other end parallel connections, the 4th filter 31 other end passes through liquid Guan Lian
Connecing the second three-way valve 32, the second interface of the second three-way valve 32 passes sequentially through the 3rd check valve 33 and the second power delivery pump
34 connect fluid reservoir 7, and the 3rd interface of the second three-way valve 32 is directly connected to fluid reservoir 7, described fluid reservoir 7 and the cut-off of liquid pipe
The 3rd three-way valve 35 it is additionally provided with between valve 9.
Refer to Fig. 3-4, the Large Copacity multiple system of the overlength distance conveying cold-producing medium of described employing natural cooling circularly cooling
Cold group and the large-capacity multiple air conditioner using the overlength distance of natural cooling circularly cooling to carry cold-producing medium are adjusted in source pump
All being additionally provided with the first three-way valve 25 between gas-liquid separator 16 and trachea stop valve 14, first three-way valve 25 other end passes through
Trachea is connected on the trachea between the first check valve 4 and outdoor heat exchanger 5, can realize refrigeration by the first three-way valve 25
The switching that agent flows to, thus realize natural cooling circulation, it is achieved energy-conservation purpose.
Outdoor controller controls the running status of compressor 1, including opening, running and shut down, and control room external heat exchanger 5
Operation, to air cooling heat exchanger, control the operation of blower fan 13, to water cooling heat exchanger, be then the operation controlling water pump, control
The aperture of off-premises station electric expansion valve 27 processed, the first power delivery pump 8 and the ON/OFF running status of the second power delivery pump 34,
First three-way valve the 25, second three-way valve 32 and the ON/OFF of the 3rd three-way valve 35, the ON/OFF of cross valve 26, indoor set controls
Device controls the aperture of respective indoor set choke valve 11, the running status of blower fan 13.Indoor set can use wireless line control machine
/ remote controller or cable controller control the operation of each indoor set, including freezing, heat, shut down, blow, dehumidify, automatically transporting
Five kinds of states such as row, it would however also be possible to employ Centralized Controller, a Centralized Controller can control all of indoor in a set of unit
Machine.
Please be refering to Fig. 2-7, the Large Copacity multiple refrigeration unit of described overlength distance conveying cold-producing medium and overlength distance conveying
The large-capacity multiple air conditioner of cold-producing medium is adjusted and is additionally provided with the first pressure between fluid reservoir 7 and the gas-liquid separator 16 in source pump
Balance pipe 18, the first pressure-equalizing pipe 18 is provided with the first electromagnetic valve 17, conveniently discharges the gaseous coolant in fluid reservoir 7,
When compressor 1 operates, open the first electromagnetic valve 17 on the first pressure-equalizing pipe 18, it is simple to compressor 1 quickly sucks
Gaseous coolant in fluid reservoir 7, when compressor 1 is closed, closes the first electromagnetic valve 17, prevents in gas-liquid separator 16
Gaseous coolant pours in down a chimney in fluid reservoir 7.
Referring to Fig. 6-9, in the Large Copacity multiple refrigeration unit of described overlength distance conveying cold-producing medium, cold-producing medium liquid measure controls
Device 15 and the first power delivery pump 8 form refrigerant liquid amount control system, and described refrigerant liquid amount control device 15 uses
Liquidometer 19, pressure transducer or target flow control device control.
Described refrigerant liquid amount control device 15 uses liquidometer 19, pressure transducer or target flow control device to control, system
When cryogen liquid amount control device 15 uses liquidometer 19 to control, determine compression according to the liquid level that liquidometer 19 collects
The running status of machine 1, when refrigerant level height change in fluid reservoir 7, causes its capacitance variations, and electric capacity is by liquid level
The change of height is converted into standard current signal, passes to outdoor controller, outdoor controller control compressor 1
Open/stop and the ON/OFF of the first delivery pump 8.When liquid level controls the setting value of program well higher than outdoor controller, compressor 1
Shutting down, the first power delivery pump 8 is in open state, carries refrigerant cycle, when liquid level controls program well less than controller
Setting value time, compressor 1 opens, and the first power delivery pump 8 is in open state, carries refrigerant cycle.
When refrigerant liquid amount control device 15 uses pressure transducer to control, described pressure transducer includes that top pressure passes
Sensor Pd2 and base pressure sensor Pd3, uses top pressure sensor Pd2 and base pressure sensor Pd3 to survey respectively
Examination fluid reservoir 7 top and the pressure of bottom, calculate the pressure differential of 2, calculate the liquid level of cold-producing medium further
And refrigerant amount, in order to control the first power delivery pump 8 and the running status of compressor 1.Refrigerant liquid amount control device 15
When using target flow control device to control, described target flow control device includes first target stream switch the 20, second target stream switch 21
With the second electromagnetic valve 22, described first target stream switch the 20, second target stream switch 21 and the second electromagnetic valve 22 are all connected with liquid storage
Tank 7, the first target stream switchs 20 other ends and connects the second target stream respectively and switch 21 other ends and second electromagnetic valve 22 other end,
The second pressure-equalizing pipe 24 can be provided with, it is to avoid the gaseous state of fluid reservoir 7 shwoot is cold between fluid reservoir 7 and the second electromagnetic valve 22
Matchmaker is on the first target stream switch 20 and the impact of the second target stream switch 21, between the first power delivery pump 8 and liquid pipe stop valve 9
Being provided with the 4th check valve 23, during refrigeration, electromagnetic valve SV4 opens, when the first target stream switch 20 and the second target stream switch 21 inspection
When measuring cold-producing medium flowing, showing that the refrigerant level in fluid reservoir 7 reaches certain setting value, now, compressor 1 stops
Machine, the first power delivery pump 8 is in open state, carries refrigerant cycle, completes kind of refrigeration cycle.
Referring to Figure 10, the large-capacity multiple air conditioner of described overlength distance conveying cold-producing medium adjusts cold-producing medium liquid measure control in source pump
Device 15 processed is target flow control device, and overlength distance carries the target stream control of the Large Copacity multiple refrigeration unit of cold-producing medium
The second electromagnetic valve 22 in device processed replaces with the 4th three-way valve 36.
The present invention is when refrigeration, and cold-producing medium becomes the cold-producing medium that liquid or gas-liquid coexist after outdoor heat exchanger 5 condenses, and stores
In fluid reservoir 7, in the Large Copacity multiple refrigeration unit of overlength distance conveying cold-producing medium, when one or more indoor set
Receive the refrigeration start-up command sent from remote controller or line control machine, Centralized Controller, and this instruction is passed to by connection
Off-premises station, in the indoor set of start, operating opened by blower fan 13, and rotating speed runs according to the rotating speed set, indoor set choke valve 11
Opening an initial opening set, be then adjusted according to the degree of superheat, standby indoor set blower fan 13 is shut down, indoor
Machine choke valve 11 cuts out, and now compressor 1 starts operating, opens air cooling heat exchanger, outdoor fan 13, changes water-cooled
Hot device, water pump are opened；Cold-producing medium becomes the gaseous refrigerant of High Temperature High Pressure after compressor 1 compresses, then through outdoor heat exchange
Device 5 condensation becomes the liquid refrigerant that pressure is higher, is stored under pressure in fluid reservoir.To air-cooling chamber external heat exchanger,
The high-pressure detected according to high-pressure pressure sensor Pd1 is controlled the rotating speed of blower fan, open/close state, it is also possible to according to
In the middle part of outdoor environment temperature or outdoor heat exchanger 5, coil temperature controls the rotating speed of blower fan 13.During refrigeration, to overlength distance
The large-capacity multiple air conditioner of conveying cold-producing medium adjusts source pump, and cross valve 26 is in not power-up state, off-premises station electronic expansion
Valve 27 standard-sized sheet, the second three-way valve 32 is opened to flow to the direction of fluid reservoir 7, and the 3rd three-way valve 35 is opened to flow to liquid pipe
The direction of stop valve 9, the fluid reservoir 7 to employing target flow control device, it is defeated that the 4th three-way valve 36 is opened to flow to the first power
Sending the direction of pump 8, off-premises station electric expansion valve 27 standard-sized sheet, do not throttle, under pressure, cold-producing medium enters fluid reservoir 7
Middle storage, the first power delivery pump 8 opens, and the second power delivery pump 34 cuts out, in the pumping of the first power delivery pump 8
Under, cold-producing medium flows through each indoor set choke valve 11, and cold-producing medium is throttled by indoor set choke valve 11, indoor set choke valve
The aperture of 11 is controlled, wherein according to trachea temperature Te1 of each indoor set and degree of superheat T of liquid pipe temperature Te2
T=Te1-Te2, the cold-producing medium after throttling evaporates in vaporizer 12, absorbs the heat in indoor environment, reaches the mesh of refrigeration
, heat absorption is evaporated and is become the relatively low steam of pressure and enter gas-liquid separator 16 through trachea, is eventually returned to compressor 1, from
And complete the overlength distance kind of refrigeration cycle of kinetic pump conveying.
When outdoor environment temperature is relatively low, compressor 1 may be at stopped status, and the first three-way valve 25 is opened to cold-producing medium stream
To the direction of outdoor heat exchanger 5, the first power delivery pump 8 realize the circulation of cold-producing medium, complete kind of refrigeration cycle.
The large-capacity multiple air conditioner of described overlength distance conveying cold-producing medium adjusts source pump, and when heating, cold-producing medium is through vaporizer
The cold-producing medium becoming liquid or gas-liquid to coexist after 12 condensations, is stored in fluid reservoir 7.When one or more indoor set receives from distant
What control device or line control machine, Centralized Controller sent heats start-up command, and this instruction is passed to off-premises station by connection,
The blower fan 13 of start is in anti-cold wind state, indoor set choke valve 11 standard-sized sheet, and compressor 1 starts operating；To air-cooled heat exchange
Device, blower fan 13 is opened, to water cooling heat exchanger, water pump unlatching；Cross valve 26 is in power-up state, off-premises station electronic expansion
An initial opening set opened by valve 27, is then adjusted according to the degree of superheat, and the 3rd three-way valve 35 is opened to flow to storage
The direction of flow container 7, the second three-way valve 32 is opened to flow to the direction of indoor set choke valve 11, after compressor 1 starts, system
Cryogen becomes the gaseous refrigerant of High Temperature High Pressure after compressor 1 compresses, and flows through the pipeline of cross valve 26, now cross valve
26 are in power-up state, then release heat through vaporizer 12, under the effect of blower fan 13, carry out heat with room air
Exchange, room air absorbs heat, reaches to heat purpose.Cold-producing medium after releasing heat, through liquid pipeline section, flows into fluid reservoir 7,
Second power delivery pump 34 is opened, and the first power delivery pump 8 cuts out, under the pumping of the second power delivery pump 34, and refrigeration
Agent flows through off-premises station electric expansion valve 27, and cold-producing medium is throttled by off-premises station electric expansion valve 27, off-premises station electronic expansion
Valve 27 is according to suction superheat control, and the cold-producing medium after throttling evaporates in outdoor heat exchanger 5, and then steam flows through four-way
Valve 26 enters gas-liquid separator 16, is eventually returned to compressor 1, completes to heat circulation.
The present invention uses helical-lobe compressor, and maximum can realize the vast capacity unit of 400 standard tons, meets the cold of building
Thermal load demands, it would however also be possible to employ one or more screw compressor or rotor compressor parallel way, is similar to conventional multi-joint
Machine, meets the cooling and heating load demand of small and medium construction thing；Service intermittent mode taked by compressor 1, the liquid refrigeration of generation
Agent is stored in fluid reservoir 7, power delivery pump carry cold-producing medium, when the cold-producing medium in fluid reservoir 7 reaches certain liquid level
Time, compressor 1 quits work, and when the liquid level detected drops to certain level value, compressor 1 is opened and run, due to dynamic
The power of power delivery pump is super much smaller than compressor 1, and when compressor 1 quits work, energy consumption is low, it is possible to achieve energy-efficient；
When ambient temperatures are low, compressor can not used, use power delivery pump to realize refrigerant cycle, reach refrigeration effect
Really, owing to using power delivery pump conveying cold-producing medium, it is possible to achieve overlength distance conveying refrigerant medium, fed distance is permissible
Up to more than 1000m, building is used, has great importance, on the one hand off-premises station can be arranged on super
Remote position, it is to avoid the crowd in building is disturbed by noise, installation site is flexible, it addition, indoor set is permissible
It is arranged on different positions, it is achieved in building, the cold of diverse location and the fixed point of heat carry；Frequency conversion pressure can not be used
Contracting machine, and use screw machine, invariable frequency compressor, it is not necessary to complicated frequency conversion drive module, control simple, system reliability
High.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and do not carrying on the back
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises
One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by
Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can
With other embodiments understood.
Claims (8)
1. the large-capacity multiple air conditioner of overlength distance conveying cold-producing medium adjusts a unit, carries the big of cold-producing medium including overlength distance
The large-capacity multiple air conditioner of capacity multiple refrigeration unit, overlength distance conveying cold-producing medium is adjusted source pump, is used natural cooling
The Large Copacity multiple refrigeration unit of overlength distance conveying cold-producing medium of circularly cooling and surpassing of employing natural cooling circularly cooling
The large-capacity multiple air conditioner of long-distance sand transport cold-producing medium adjusts source pump, and the Large Copacity of described overlength distance conveying cold-producing medium is multi-joint
Formula is air conditioning unit all includes off-premises station and indoor set, it is characterised in that described off-premises station includes outdoor heat exchanger (5), storage
Flow container (7), the first power delivery pump (8), gas-liquid separator (16), compressor (1) and oil eliminator (3),
Indoor set includes filter, vaporizer (12), indoor set choke valve (11) and blower fan (13), and described filter includes
First filter (6) and the second filter (10)；The Large Copacity multiple refrigeration machine of described overlength distance conveying cold-producing medium
In group, compressor (1) connects oil eliminator (3), oil return capillary tube (2) and gas-liquid separator (16) respectively by exhaustor,
Being provided with suction temperature sensor Ts at described compressor (1) muffler, compressor (1) is connected with oil eliminator (3)
Trachea on be sequentially provided with exhaust gas temperature sensor Td and high-voltage switch gear HPS, compressor (1) and gas-liquid separator (16)
The muffler connected is provided with low-pressure sensor Ps, and oil return capillary tube (2) other end connects oil eliminator by trachea
(3), the outlet of oil eliminator (3) connects the first check valve (4) by trachea, and the first check valve (4) other end leads to
Crossing trachea junction chamber external heat exchanger (5), the trachea that the first check valve (4) is connected with outdoor heat exchanger (5) is provided with height
Pressure pressure sensor Pd1, outdoor heat exchanger (5) is provided with outdoor environment temperature sensor Tao, outdoor heat exchanger (5)
Outlet be sequentially connected with fluid reservoir (7), the first power delivery pump (8) and liquid pipe stop valve (9) by liquid pipe, described
Being provided with refrigerant liquid amount control device (15) on fluid reservoir (7), liquid pipe stop valve (9) other end is by liquid pipe respectively
Connecting the first filter (6) in many group indoor sets, the first filter (6) other end is sequentially connected with indoor set by liquid pipe
Choke valve (11), the second filter (10) and vaporizer (12), the second filter (10) and vaporizer (12) are even
The liquid pipe connect is provided with interior machine liquid pipe temperature sensor Te2, is designed with blower fan (13) often organizing, vaporizer (12) in indoor set
The other end connects trachea stop valve (14) by trachea, and trachea stop valve (14) other end connects gas-liquid separation by trachea
Device (16).
The large-capacity multiple air conditioner tune group of overlength distance the most according to claim 1 conveying cold-producing medium, it is characterised in that
The large-capacity multiple air conditioner of described overlength distance conveying cold-producing medium adjusts the first check valve (4) and trachea stop valve in source pump
(14) being additionally provided with cross valve (26) between, cross valve (26) is also by connecting tube junction chamber external heat exchanger (5) respectively
With gas-liquid separator (16), the isocon of outdoor heat exchanger (5) is provided with outdoor heat exchanger coil temperature sensor Tdef,
Be also associated with between outdoor heat exchanger (5) and fluid reservoir (7) the second check valve (29), the 3rd filter (30),
Four filters (31), the second three-way valve (32), the 3rd check valve (33), the second power delivery pump (34) and one
Or two off-premises station electric expansion valves (27), described outdoor heat exchanger (5) connects the 3rd filter (30) by liquid pipe,
3rd filter (30) other end connects the second check valve (29) respectively by liquid pipe and one or two off-premises station electronics is swollen
By liquid pipe after swollen valve (27), off-premises station electric expansion valve (27) other end and the second check valve (29) other end parallel connection
Connecting the 4th filter (31), the 4th filter (31) other end connects the second three-way valve (32) by liquid pipe, and second
Second interface of three-way valve (32) passes sequentially through the 3rd check valve (33) and the second power delivery pump (34) connects fluid reservoir
(7), the 3rd interface of the second three-way valve (32) is directly connected to fluid reservoir (7), and described fluid reservoir (7) and liquid pipe cut
Only it is additionally provided with the 3rd three-way valve (35) between valve (9).
3. adjusting unit according to the large-capacity multiple air conditioner of the arbitrary described overlength distance conveying cold-producing medium of claim 1-2, it is special
Levy and be, use the Large Copacity multiple refrigeration unit of the overlength distance conveying cold-producing medium of natural cooling circularly cooling and use certainly
So the large-capacity multiple air conditioner of the overlength distance conveying cold-producing medium of cooling circularly cooling is adjusted in source pump, described gas-liquid separator
(16) and be additionally provided with the first three-way valve (25) between trachea stop valve (14), the first three-way valve (25) other end passes through
Trachea is connected on the trachea between the first check valve (4) and outdoor heat exchanger (5).
4. adjusting unit according to the large-capacity multiple air conditioner of the arbitrary described overlength distance conveying cold-producing medium of claim 1-3, it is special
Levy and be, between described fluid reservoir (7) and gas-liquid separator (16), be additionally provided with the first pressure-equalizing pipe (18), first
Pressure-equalizing pipe (18) is provided with the first electromagnetic valve (17).
5. large-capacity multiple air conditioner according to the arbitrary described overlength distance conveying cold-producing medium of claim 1-4 adjust unit, its
Being characterised by, described refrigerant liquid amount control device (15) and the first power delivery pump (8) composition cold-producing medium liquid measure control
System, described refrigerant liquid amount control device (15) uses liquidometer (19), pressure transducer or target flow control device
Detection, when refrigerant liquid amount control device (15) uses pressure transducer detection, described pressure transducer includes top pressure
Sensor Pd2 and base pressure sensor Pd3, refrigerant liquid amount control device (15) uses target flow control device to detect
Time, described target flow control device includes the first target stream switch (20), the second target stream switch (21) and the second electromagnetic valve (22),
Described first target stream switch (20), the second target stream switch (21) and the second electromagnetic valve (22) are all connected with fluid reservoir (7),
First target stream switch (20) other end connect respectively second target stream switch (21) other end and the second electromagnetic valve (22) another
End.
The large-capacity multiple air conditioner of overlength distance the most according to claim 2 conveying cold-producing medium adjusts source pump, its feature
It is, between described first power delivery pump (8) and liquid pipe stop valve (9), is provided with the 4th check valve (23).
The large-capacity multiple air conditioner of overlength distance the most according to claim 2 conveying cold-producing medium adjusts source pump, its feature
It is, between described fluid reservoir (7) and the second electromagnetic valve (22), is additionally provided with the second pressure-equalizing pipe (24).
The Large Copacity multiple heat pump air conditioner unit of overlength distance the most according to claim 2 conveying cold-producing medium, its feature
Being, described refrigerant liquid amount control device (15) is the second electromagnetic valve in target flow control device, and target flow control device
(22) the 4th three-way valve (36) is replaced with.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510054590.0A CN105987535A (en) | 2015-02-03 | 2015-02-03 | High-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of refrigerant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510054590.0A CN105987535A (en) | 2015-02-03 | 2015-02-03 | High-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of refrigerant |
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| CN201510054590.0A Pending CN105987535A (en) | 2015-02-03 | 2015-02-03 | High-capacity multi-split air-condition heat pump unit for ultra-long-distance conveying of refrigerant |
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| CN107178932A (en) * | 2016-03-09 | 2017-09-19 | 宁波奈兰环境系统有限公司 | A kind of overlength distance conveys the high energy efficiency VRF Air Conditioning System of refrigerant |
| CN107401849A (en) * | 2017-08-15 | 2017-11-28 | 广东美的暖通设备有限公司 | Multiple on-line system and its control method and device that loop valve body is subcooled |
| CN107560215A (en) * | 2017-08-15 | 2018-01-09 | 广东美的暖通设备有限公司 | Multiple on-line system and its control method and device that loop valve body is subcooled |
| CN108562082A (en) * | 2018-06-22 | 2018-09-21 | 临沂智慧新能源科技有限公司 | The cold and hot energy-storage system of Split type air source heat pump and its refrigeration, supply control method for heat |
| CN111473468A (en) * | 2020-04-24 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise through adjustment of outer valve and air conditioner |
| CN111473467A (en) * | 2020-04-24 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise by controlling differential pressure and air conditioner |
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| CN111473468A (en) * | 2020-04-24 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise through adjustment of outer valve and air conditioner |
| CN111473467A (en) * | 2020-04-24 | 2020-07-31 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise by controlling differential pressure and air conditioner |
| CN111473468B (en) * | 2020-04-24 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise through adjustment of outer valve and air conditioner |
| CN111473467B (en) * | 2020-04-24 | 2021-09-21 | 宁波奥克斯电气股份有限公司 | Control method and device for reducing noise by controlling differential pressure and air conditioner |
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Application publication date: 20161005 |