CN109442752A - A kind of superposition type hot-air system - Google Patents
A kind of superposition type hot-air system Download PDFInfo
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- CN109442752A CN109442752A CN201811419953.6A CN201811419953A CN109442752A CN 109442752 A CN109442752 A CN 109442752A CN 201811419953 A CN201811419953 A CN 201811419953A CN 109442752 A CN109442752 A CN 109442752A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 239000003507 refrigerant Substances 0.000 claims abstract description 19
- 238000010257 thawing Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 65
- 238000003860 storage Methods 0.000 claims description 36
- 230000008676 import Effects 0.000 claims description 18
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 238000009833 condensation Methods 0.000 abstract description 8
- 230000005494 condensation Effects 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000001035 drying Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 235000016936 Dendrocalamus strictus Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/06—Air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
Abstract
A kind of superposition type hot-air system includes enclosed heating recycle system, and low temperature hot-blast outlet, medium temperature hot-blast outlet, high-temperature hot-air are formed on the hot-blast pipe line of the superposition type hot-air system and exports three ladder-type hot air outlets；And it is formed with and heats subsystem to first gradient heating subsystem, the second gradient heating subsystem and the 3rd gradient of above three outlet hot wind supply respectively.A kind of superposition type hot-air system of the invention can effectively solve the northern frore area winter stable demand for producing high-temperature-hot-water or hot wind by above-mentioned setting；It produces high-temperature hot-air using the characteristic of one of cryogen by the way that different refrigerants is arranged, and automatic defrosting function also can ensure that unit more stable operation, higher condensation temperature is able to achieve compared with regular air source heat pump, so as to obtain higher leaving air temp.
Description
Technical field
The invention belongs to agricultural and sideline product drying fields, and in particular to a kind of superposition type hot-air system.
Background technique
Promotion with market to all kinds of agricultural and sideline products drying mouthfeel and quality requirements, manufacture of the manufacturer to drying equipment
Face unprecedented challenge.In addition, country, which is advocated energetically using new energy, bans existing coal-fired, oil burning boiler to realize
It is environmentally protective, the popularization and use of air-source progress just like a raging fire.But the weather of north of china in winter severe cold is to machine stable operation
And unit persistently exports that high-temperature hot-air is rather unfavorable and winter outdoor unit evaporation side can serious frosting.
It application No. is 2017210807270 utility model, discloses " a kind of middle-size and small-size grain dry hot-air system ", wraps
Include air-heater, air supply duct, drying tower pressure fan, several grain columns and exhausting-dusting equipment；The air-heater is whole
Machine, wherein helical-lobe compressor, evaporator, condenser, throttle valve, new wind filter etc. are in a whole equipment, the screw rod
Compressor, evaporator, throttle valve and condenser constitute heating circuit by piping connection；Refrigeration is prefabricated in the air-heater
Agent, evaporator are configured with evaporator fan, for assisting improving the heat absorption efficiency of evaporator；The new wind filter and condenser
In the fresh air channel of the air-heater, after fresh air is filtered by new wind filter, then is absorbed heat and heated up by condenser.
Application No. is the utility model of 201720568517X, disclose " a kind of using air as the multiple response type of heat transferring medium heat
Pump hot-air system ", including high temperature heat pump system, air heat energy switch room and hot pump in low temp system；The high temperature heat pump system packet
Include the first condenser, the first compressor, the first evaporator and first throttle valve；The hot pump in low temp system includes the second condensation
Device, the second compressor, the second evaporator and second throttle；First evaporator and the second condenser form air heat energy and hand over
Change room.Hot pump in low temp system and high temperature heat pump system are effectively combined use, realize the multiple response type of different temperatures, add third
The use of blower enhances the exchange effect of air heat energy.
Summary of the invention
It is effectively to solve the northern frore area winter stable demand for producing high-temperature-hot-water or hot wind, creates one herein
Kind of superposition type hot-air system, using environmentally friendly refrigerant to environment without effectively solved while destruction regular air source heat pump in winter without
Method normally produces the problem of high-temperature hot-air.Low-pressure stage system replaces R22 refrigerant using environmental protection refrigerant 407C；Hiigh pressure stage system uses
Environmentally friendly refrigerant R134a produces high-temperature hot-air using the characteristic of the cryogen, and automatic defrosting function also can ensure that the more stable fortune of unit
Row, is able to achieve higher condensation temperature compared with regular air source heat pump, so as to obtain higher leaving air temp.Its technical solution is specific
It is as follows:
A kind of superposition type hot-air system, include by compressor, four-way valve, condenser, liquid storage device, expansion valve, evaporator,
Four-way valve, gas-liquid separator, compressor are sequentially connected the enclosed heating recycle system of composition, it is characterised in that:
Low temperature hot-blast outlet, medium temperature hot-blast outlet, high temperature are formed on the hot-blast pipe line of the superposition type hot-air system
Three ladder-type hot air outlets of hot-blast outlet；
It is formed in the superposition type hot-air system:
First gradient heats subsystem, to give low temperature hot-blast outlet hot wind supply；
Second gradient heats subsystem, to give medium temperature hot-blast outlet hot wind supply；
3rd gradient heats subsystem, to export hot wind supply to high-temperature hot-air.
A kind of superposition type hot-air system according to the present invention, it is characterised in that:
First gradient heating subsystem is by sequentially connected first compressor (1-1), the first four-way valve (1-16), the
One condenser (1-3-2), the first liquid storage device (1-4), the first expansion valve (1-6), the first evaporator (1-7), the first four-way valve (1-
16), the enclosed heating circuit that the first gas-liquid separator (1-8), the first compressor (1-1) are constituted is constituted；
3rd gradient heating subsystem is by sequentially connected second compressor (2-1), the second four-way valve (2-2), the
Two condensers (2-3), the second liquid storage device (2-4), the second expansion valve (2-7), the second evaporator (1-3-1), the second four-way valve (2-
2), the enclosed heating circuit that the second gas-liquid separator (2-8), the second compressor (2-1) are constituted is constituted；
Second gradient heats subsystem, by the first condenser and 3rd gradient system in first gradient heating subsystem
The second evaporator in thermal sub-system is built in same heat exchanger difference runner and constitutes.
A kind of superposition type hot-air system according to the present invention, it is characterised in that:
Circulation refrigerant and 3rd gradient in first gradient heating subsystem heat the circulation in subsystem with cold
Matchmaker is different two kinds.
A kind of superposition type hot-air system according to the present invention, it is characterised in that:
The first economizer (1-5) is additionally provided between first liquid storage device (1-4) and the first expansion valve (1-6)；
The outlet of the inlet connection the first liquid storage device (1-4) of first economizer (1-5)；
The import of the liquid outlet connection the first expansion valve (1-6) of first economizer (1-5)；
The gas supplementing opening of first economizer (1-5) connects the first compressor inlet；
First tonifying Qi capillary (1- is set between the liquid outlet and self-loopa gas outlet of first economizer (1-5)
12), and on the first tonifying Qi capillary (1-12) the first solenoid valve (1-13) is set.
A kind of superposition type hot-air system according to the present invention, it is characterised in that:
The second economizer (2-5) is additionally provided between second liquid storage device (2-4) and the second expansion valve (2-7)；
The outlet of the inlet connection the second liquid storage device (2-4) of second economizer (2-5)；
The import of the liquid outlet connection the second expansion valve (2-7) of second economizer (2-5)；
The gas supplementing opening of second economizer (2-5) connects the second compressor inlet；
Second tonifying Qi capillary (2- is set between the liquid outlet and self-loopa gas outlet of second economizer (2-5)
9), and on the second tonifying Qi capillary (2-9) second solenoid valve (2-6) is set.
A kind of superposition type hot-air system according to the present invention, it is characterised in that:
The first threeway ratio tune is set on pipeline of first four-way valve (1-16) towards the first condenser (1-3-2)
It saves valve (1-14),
The import of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the first four-way valve (1-16)；
The first outlet of the first threeway ratio adjusting valve (1-14) is connected by pipeline and the first condenser (1-3-2)
It connects；
The second outlet of the first threeway ratio adjusting valve (1-14) is connected by pipeline and the second evaporator (1-3-1)
It connects；
The second threeway ratio is set on the connecting line of first condenser (1-3-2) and the first liquid storage device (1-4)
Regulating valve (1-15)；
First import of the second threeway ratio adjusting valve (1-15) is connected by pipeline and the first condenser (1-3-2)
It connects；
Second import of the second threeway ratio adjusting valve (1-15) is connected by pipeline and the second evaporator (1-3-1)
It connects；
The outlet of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the first liquid storage device (1-14).
A kind of superposition type hot-air system according to the present invention, it is characterised in that:
First compressor, the second compressor are all frequency-changeable compressor.
A kind of superposition type hot-air system according to the present invention, it is characterised in that:
Side the first expansion valve (1-6) in first gradient heating subsystem also sets up the third solenoid valve of piping connection
(1-9) and defrosting valve (1-10)；
The third solenoid valve (1-9) and pipeline and the first expansion valve where defrosting valve (1-10) of the piping connection
Pipeline where (1-6) is formed between the first liquid storage device (1-4) and the first evaporator (1-7) and is connected in parallel.
A kind of superposition type hot-air system of the invention,
Two sets are arranged first by compressor, four-way valve, condenser, liquid storage device, expansion valve, evaporator, four-way valve, gas-liquid point
From device, the sequentially connected closed hot-air circulation structure of compressor；And it is filled with environmental protection respectively in two sets of closed hot-air circulation structures
Refrigerant 407C, environmentally friendly refrigerant R134a；Subsystem is heated to be respectively formed first gradient heating subsystem and 3rd gradient,
It is correspondingly formed low temperature hot wind wind and high-temperature hot-air wind；
Secondly by the evaporator in the condenser and 3rd gradient heating subsystem heated first gradient in subsystem
It is set in a shell, to form the second gradient heating subsystem；
Accordingly, by two sets of closed hot-air circulation structures of setting, and by will be between two sets of closed hot-air circulation structures
Incidence relation is established, first gradient heating subsystem, the second heating subsystem and the 3rd gradient of superposition type hot-air system are formed
Heat the ladder-type hot wind air feed that subsystem is constituted.
Again, economizer is respectively set by heating in subsystem and 3rd gradient heating subsystem in first gradient respectively
And corresponding tonifying Qi capillary, the level established in respective system are adjusted, and are adjusted with forming multi-level environment suitability.
Then, by the way that the compressor in two sets of closed hot-air circulation structures is disposed as frequency-changeable compressor, to reinforcement
Multi-level environment suitability is adjusted, and forms more fully multi-level adapt to.
Finally, heating subsystem for the second gradient, by two threeway ratio adjusting valves of setting, establishes and be based on second
The hierarchy type heating wind that gradient heats subsystem is adjusted, and is adjusted and is echoed with the level of aforementioned foundation, the monoblock type in formation system
Level is adjusted, to sufficiently respond to varying environment；
And on the basis of above, in first gradient heating subsystem, it is also provided with and is arranged in parallel with the first expansion valve
Defrosting valve and corresponding solenoid valve, to formed based on first gradient heating subsystem automatic defrosting structure.
Summary, a kind of superposition type hot-air system of the invention can effectively solve the northern frore area winter by above-mentioned setting
Ji Wending produces the demand of high-temperature-hot-water or hot wind；It is conventional empty without effectively being solved while destruction to environment using environmentally friendly refrigerant
Air supply heat pump can not normally produce the problem of high-temperature hot-air in winter, specifically: subsystem is heated for first gradient, using ring
Cold insulation matchmaker R407C replaces R22 refrigerant；The cryogen is utilized using environmentally friendly refrigerant R134a for 3rd gradient heating subsystem
Characteristic produces high-temperature hot-air, and automatic defrosting function also can ensure that unit more stable operation, is able to achieve compared with regular air source heat pump
Higher condensation temperature, so as to obtain higher leaving air temp.
Detailed description of the invention
Fig. 1 is structural schematic block diagram of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is cold air distribution operational process schematic diagram of the invention；
Fig. 4 is medium temperature air-supply operational process schematic diagram of the invention；
Fig. 5 is the flow diagram that tonifying Qi circuit is opened in medium temperature air-supply operation of the invention；
Fig. 6 is the high temperature air-supply operation schematic diagram in the present invention；
Fig. 7 is the automatic defrosting schematic diagram in the present invention.
In figure,
1-1 is the first compressor；
1-16 is the first four-way valve；
1-3-2 is the first condenser；
1-4 is the first liquid storage device；
1-6 is the first expansion valve；
1-7 is the first evaporator；
1-16 is the first four-way valve of the invention；
1-8 is the first gas-liquid separator；
1-9 is third solenoid valve；
1-10 is defrosting valve；
1-12 is the first tonifying Qi capillary；
1-13 is the first solenoid valve；
1-14 is the first threeway ratio adjusting valve；
1-15 is the second threeway ratio adjusting valve；
2-1 is the second compressor；
2-2 is the second four-way valve；
2-3 is the second condenser；
2-4 is the second liquid storage device；
2-7 is the second expansion valve；
1-3-1 is the second evaporator；
2-2 is the second four-way valve；
2-8 is the second gas-liquid separator；
2-5 is the second economizer；
2-6 is second solenoid valve；
2-9 is the second tonifying Qi capillary.
Specific embodiment
In the following, being made according to specification drawings and specific embodiments to a kind of superposition type hot-air system of the invention further
It illustrates.
A kind of superposition type hot-air system as shown in Figure 1 includes by compressor, four-way valve, condenser, liquid storage device, swollen
Swollen valve, evaporator, four-way valve, gas-liquid separator, compressor are sequentially connected the enclosed heating recycle system of composition, in the overlapping
It is formed with low temperature hot-blast outlet, medium temperature hot-blast outlet, high-temperature hot-air on the hot-blast pipe line of formula hot-air system and exports three ladder-types
Hot air outlet；
It is formed in the superposition type hot-air system:
First gradient heats subsystem, to give low temperature hot-blast outlet hot wind supply；
Second gradient heats subsystem, to give medium temperature hot-blast outlet hot wind supply；
3rd gradient heats subsystem, to export hot wind supply to high-temperature hot-air.
Wherein,
As shown in Fig. 2, first gradient heats subsystem by sequentially connected first compressor (1-1), the first four-way valve (1-
16), the first condenser (1-3-2), the first liquid storage device (1-4), the first expansion valve (1-6), the first evaporator (1-7), the one or four
The enclosed heating circuit that port valve (1-16), the first gas-liquid separator (1-8), the first compressor (1-1) are constituted is constituted；
3rd gradient heats subsystem by sequentially connected second compressor (2-1), the second four-way valve (2-2), second cold
Condenser (2-3), the second liquid storage device (2-4), the second expansion valve (2-7), the second evaporator (1-3-1), the second four-way valve (2-2),
The enclosed heating circuit that second gas-liquid separator (2-8), the second compressor (2-1) are constituted is constituted；
Second gradient heats subsystem, by the first condenser and 3rd gradient system in first gradient heating subsystem
The second evaporator in thermal sub-system is built in same heat exchanger difference runner and constitutes.
Wherein,
Circulation refrigerant and 3rd gradient in first gradient heating subsystem heat the circulation in subsystem with cold
Matchmaker is different two kinds, specifically: circulation in first gradient subsystem is R407C with refrigerant；In first gradient subsystem
Circulation is R134a with refrigerant.
Wherein,
The first economizer (1-5) is additionally provided between first liquid storage device (1-4) and the first expansion valve (1-6)；
The outlet of the inlet connection the first liquid storage device (1-4) of first economizer (1-5)；
The import of the liquid outlet connection the first expansion valve (1-6) of first economizer (1-5)；
The gas supplementing opening of first economizer (1-5) connects the first compressor inlet；
First tonifying Qi capillary (1- is set between the liquid outlet and self-loopa gas outlet of first economizer (1-5)
12), and on the first tonifying Qi capillary (1-12) the first solenoid valve (1-13) is set.
Wherein,
The second economizer (2-5) is additionally provided between second liquid storage device (2-4) and the second expansion valve (2-7)；
The outlet of the inlet connection the second liquid storage device (2-4) of second economizer (2-5)；
The import of the liquid outlet connection the second expansion valve (2-7) of second economizer (2-5)；
The gas supplementing opening of second economizer (2-5) connects the second compressor inlet；
Second tonifying Qi capillary (2- is set between the liquid outlet and self-loopa gas outlet of second economizer (2-5)
9), and on the second tonifying Qi capillary (2-9) second solenoid valve (2-6) is set.
Wherein,
The first threeway ratio tune is set on pipeline of first four-way valve (1-16) towards the first condenser (1-3-2)
It saves valve (1-14),
The import of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the first four-way valve (1-16)；
The first outlet of the first threeway ratio adjusting valve (1-14) is connected by pipeline and the first condenser (1-3-2)
It connects；
The second outlet of the first threeway ratio adjusting valve (1-14) is connected by pipeline and the second evaporator (1-3-1)
It connects；
The second threeway ratio is set on the connecting line of first condenser (1-3-2) and the first liquid storage device (1-4)
Regulating valve (1-15)；
First import of the second threeway ratio adjusting valve (1-15) is connected by pipeline and the first condenser (1-3-2)
It connects；
Second import of the second threeway ratio adjusting valve (1-15) is connected by pipeline and the second evaporator (1-3-1)
It connects；
The outlet of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the first liquid storage device (1-14).
Wherein,
First compressor, the second compressor are all frequency-changeable compressor.
Wherein,
Side the first expansion valve (1-6) in first gradient heating subsystem also sets up the third solenoid valve of piping connection
(1-9) and defrosting valve (1-10)；
The third solenoid valve (1-9) and pipeline and the first expansion valve where defrosting valve (1-10) of the piping connection
Pipeline where (1-6) is formed between the first liquid storage device (1-4) and the first evaporator (1-7) and is connected in parallel.
Working principle and embodiment
This system dynamic operational illustrates:
According to the difference of the required temperature in drying specific function area, regulating system inside associated components are to reach different air-supplies
Temperature purpose.Specific movement is as follows:
1, cold air distribution is run
First gradient is used only at this time and heats subsystem for the place that the method for operation is more suitble to drying temperature early period not high
Condensation heat is directly discharged to use thermal field institute by system, and the operating cost of the mode is relatively low, increases compressor when load increases
Frequency uses heat demand to reach.Frequency conversion system is first passed through when ambient temperature reduces and meets load, and temperature continues decline and opens
Tonifying Qi solenoid valve is opened to offset energy loss caused by circumstance temperature reduction.When 0 DEG C or more, using variable frequency adjustment；When in 0 DEG C
At extremely -12 DEG C, adjusted using the Gas-supplying enthalpy-increasing based on economizer；When temperature is lower than -12 DEG C, using based on frequency-changeable compressor
Variable frequency adjustment+Gas-supplying enthalpy-increasing based on economizer adjusts the mode combined and adjusts.
Process is as shown in Figure 3.
2, medium temperature air-supply operation
For drying mid-term, temperature needed for drying place is opposite to be increased, and passes through mixing first gradient and 3rd gradient
The temperature of outlet air is condensed finally to reach design temperature demand.
Process is as shown in Figure 4.
When environment temperature is reduced to it is subzero when, low-temperature level system open tonifying Qi circuit, by a part of cryogen liquid through economy
Device 1-5, the degree of supercooling of cryogen liquid in increase system, to promote heating capacity.
Process is as shown in Figure 5.
By triple valve 1-14 and 1-15 in adjusting first gradient heating subsystem to adjust distribution to 1-3-1 and 1-3-2
In flow, the low temperature hot wind of 1-3-2 output and the high-temperature hot-air of 2-3 output become medium temperature hot wind and are sent again to heat after mixing
Place.
3, high temperature air-supply operation, as shown in Figure 6；
When needing to produce higher leaving air temp, first opens first gradient and heat subsystem circuit, be then turned on third ladder
Degree heating subsystem circuit, heats the condensation heat in subsystem for first gradient by evaporative condenser 1-3-2 and is transferred to third
Gradient heat subsystem, thus greatly improve 3rd gradient heating subsystem at low ambient temperatures reliability of operation and
Stability.When encountering severe cold weather, the tonifying Qi circuit in first gradient heating subsystem, cryogen liquid in increase system are opened
Enthalpy, thus play increase heating capacity effect；The second compressor frequency is raised simultaneously, system is directly increased by raising frequency rate
Refrigerant circulation flow is to increase quantity of heat production.In addition, compressor can be safely operated under great compression ratio operating condition, stablize
Power output.When 3rd gradient heating subsystem leaving air temp is very high, the tonifying Qi circuit in 3rd gradient heating subsystem is opened, it is real
The supercooling function of refrigerant liquid after now condensing while increasing system heating capacity, inhibits the excessive liter of delivery temperature well
Height, stability of the insurance system under hot operation.
4, automatic defrosting, as shown in Figure 7；
When equipment sensing system reaches defrost condition, the first condensation side blower is out of service.Switching the first four-way valve will
Hot-gas bypass is melted heat frost in fin using the sensible heat and latent heat of superheated refrigerant gas to the first evaporator.
A kind of superposition type hot-air system of the invention,
Two sets are arranged first by compressor, four-way valve, condenser, liquid storage device, expansion valve, evaporator, four-way valve, gas-liquid point
From device, the sequentially connected closed hot-air circulation structure of compressor；And it is filled with environmental protection respectively in two sets of closed hot-air circulation structures
Refrigerant 407C, environmentally friendly refrigerant R134a；Subsystem is heated to be respectively formed first gradient heating subsystem and 3rd gradient,
It is correspondingly formed low temperature hot wind wind and high-temperature hot-air wind；
Secondly by the evaporator in the condenser and 3rd gradient heating subsystem heated first gradient in subsystem
It is set in a shell, to form the second gradient heating subsystem；
Accordingly, by two sets of closed hot-air circulation structures of setting, and by will be between two sets of closed hot-air circulation structures
Incidence relation is established, first gradient heating subsystem, the second heating subsystem and the 3rd gradient of superposition type hot-air system are formed
Heat the ladder-type hot wind air feed that subsystem is constituted.
Again, economizer is respectively set by heating in subsystem and 3rd gradient heating subsystem in first gradient respectively
And corresponding tonifying Qi capillary, the level established in respective system are adjusted, and are adjusted with forming multi-level environment suitability.
Then, by the way that the compressor in two sets of closed hot-air circulation structures is disposed as frequency-changeable compressor, to reinforcement
Multi-level environment suitability is adjusted, and forms more fully multi-level adapt to.
Finally, heating subsystem for the second gradient, by two threeway ratio adjusting valves of setting, establishes and be based on second
The hierarchy type heating wind that gradient heats subsystem is adjusted, and is adjusted and is echoed with the level of aforementioned foundation, the monoblock type in formation system
Level is adjusted, to sufficiently respond to varying environment；
And on the basis of above, in first gradient heating subsystem, it is also provided with and is arranged in parallel with the first expansion valve
Defrosting valve and corresponding solenoid valve, to formed based on first gradient heating subsystem automatic defrosting structure.
Summary, a kind of superposition type hot-air system of the invention can effectively solve the northern frore area winter by above-mentioned setting
Ji Wending produces the demand of high-temperature-hot-water or hot wind；It is conventional empty without effectively being solved while destruction to environment using environmentally friendly refrigerant
Air supply heat pump can not normally produce the problem of high-temperature hot-air in winter, specifically: subsystem is heated for first gradient, using ring
Cold insulation matchmaker R407C replaces R22 refrigerant；The cryogen is utilized using environmentally friendly refrigerant R134a for 3rd gradient heating subsystem
Characteristic produces high-temperature hot-air, and automatic defrosting function also can ensure that unit more stable operation, is able to achieve compared with regular air source heat pump
Higher condensation temperature, so as to obtain higher leaving air temp.
Claims (9)
1. a kind of superposition type hot-air system includes by compressor, four-way valve, condenser, liquid storage device, expansion valve, evaporator, four
Port valve, gas-liquid separator, compressor are sequentially connected the enclosed heating recycle system of composition, it is characterised in that:
Low temperature hot-blast outlet, medium temperature hot-blast outlet, high-temperature hot-air are formed on the hot-blast pipe line of the superposition type hot-air system
Export three ladder-type hot air outlets；
It is formed in the superposition type hot-air system:
First gradient heats subsystem, to give low temperature hot-blast outlet hot wind supply；
Second gradient heats subsystem, to give medium temperature hot-blast outlet hot wind supply；
3rd gradient heats subsystem, to export hot wind supply to high-temperature hot-air.
2. a kind of superposition type hot-air system according to claim 1, it is characterised in that:
First gradient heating subsystem is by sequentially connected first compressor (1-1), the first four-way valve (1-16), first cold
Condenser (1-3-2), the first liquid storage device (1-4), the first expansion valve (1-6), the first evaporator (1-7), the first four-way valve (1-16),
The enclosed heating circuit that first gas-liquid separator (1-8), the first compressor (1-1) are constituted is constituted；
3rd gradient heating subsystem is by sequentially connected second compressor (2-1), the second four-way valve (2-2), second cold
Condenser (2-3), the second liquid storage device (2-4), the second expansion valve (2-7), the second evaporator (1-3-1), the second four-way valve (2-2),
The enclosed heating circuit that second gas-liquid separator (2-8), the second compressor (2-1) are constituted is constituted；
Second gradient heats subsystem, by the first condenser and 3rd gradient heating in first gradient heating subsystem
The second evaporator in system is built in same heat exchanger difference runner and constitutes.
3. a kind of superposition type hot-air system stated according to claim 2, it is characterised in that:
The circulation that circulation refrigerant and 3rd gradient in first gradient heating subsystem heat in subsystem is with refrigerant
Different two kinds.
4. a kind of superposition type hot-air system according to claim 2, it is characterised in that:
The first economizer (1-5) is additionally provided between first liquid storage device (1-4) and the first expansion valve (1-6)；
The outlet of the inlet connection the first liquid storage device (1-4) of first economizer (1-5)；
The import of the liquid outlet connection the first expansion valve (1-6) of first economizer (1-5)；
The gas supplementing opening of first economizer (1-5) connects the first compressor inlet；
First tonifying Qi capillary (1-12) is set between the liquid outlet and self-loopa gas outlet of first economizer (1-5),
And the first solenoid valve (1-13) is set on the first tonifying Qi capillary (1-12).
5. a kind of superposition type hot-air system according to claim 2, it is characterised in that:
The second economizer (2-5) is additionally provided between second liquid storage device (2-4) and the second expansion valve (2-7)；
The outlet of the inlet connection the second liquid storage device (2-4) of second economizer (2-5)；
The import of the liquid outlet connection the second expansion valve (2-7) of second economizer (2-5)；
The gas supplementing opening of second economizer (2-5) connects the second compressor inlet；
Second tonifying Qi capillary (2-9) is set between the liquid outlet and self-loopa gas outlet of second economizer (2-5), and
Second solenoid valve (2-6) is set on the second tonifying Qi capillary (2-9).
6. a kind of superposition type hot-air system according to claim 2, it is characterised in that:
The first threeway ratio adjusting valve is set on pipeline of first four-way valve (1-16) towards the first condenser (1-3-2)
(1-14),
The import of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the first four-way valve (1-16)；
The first outlet of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the first condenser (1-3-2)；
The second outlet of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the second evaporator (1-3-1)；
The second threeway proportion adjustment is set on the connecting line of first condenser (1-3-2) and the first liquid storage device (1-4)
Valve (1-15)；
First import of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the first condenser (1-3-2)；
Second import of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the second evaporator (1-3-1)；
The outlet of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the first liquid storage device (1-14).
7. a kind of superposition type hot-air system according to claim 4 and 5, it is characterised in that:
The first threeway ratio adjusting valve is set on pipeline of first four-way valve (1-16) towards the first condenser (1-3-2)
(1-14),
The import of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the first four-way valve (1-16)；
The first outlet of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the first condenser (1-3-2)；
The second outlet of the first threeway ratio adjusting valve (1-14) is connect by pipeline with the second evaporator (1-3-1)；
The second threeway proportion adjustment is set on the connecting line of first condenser (1-3-2) and the first liquid storage device (1-4)
Valve (1-15)；
First import of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the first condenser (1-3-2)；
Second import of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the second evaporator (1-3-1)；
The outlet of the second threeway ratio adjusting valve (1-15) is connect by pipeline with the first liquid storage device (1-14).
8. a kind of superposition type hot-air system according to claim 2, it is characterised in that:
First compressor, the second compressor are all frequency-changeable compressor.
9. a kind of superposition type hot-air system according to claim 2, it is characterised in that:
Side the first expansion valve (1-6) in first gradient heating subsystem also sets up the third solenoid valve (1-9) of piping connection
With defrosting valve (1-10)；
The third solenoid valve (1-9) and pipeline and the first expansion valve (1-6) where defrosting valve (1-10) of the piping connection
The pipeline at place is formed between the first liquid storage device (1-4) and the first evaporator (1-7) and is connected in parallel.
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| CN201811419953.6A CN109442752B (en) | 2018-11-26 | 2018-11-26 | Overlapping type hot air system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110701664A (en) * | 2019-11-11 | 2020-01-17 | 江苏天舒电器有限公司 | Wide-ring-temperature multi-stage water outlet variable-frequency air energy cascade type heat engine system and working method thereof |
| CN111595002A (en) * | 2020-05-18 | 2020-08-28 | 广东美的暖通设备有限公司 | Air conditioning system, control method thereof, control device thereof and readable storage medium |
| CN113959096A (en) * | 2021-11-05 | 2022-01-21 | 广州黑马科技有限公司 | Heat pump device capable of generating high-temperature air |
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|---|---|
| CN109442752B (en) | 2024-02-13 |
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