CN205783233U - A kind of ultra low temperature overlapping formula heating unit - Google Patents
A kind of ultra low temperature overlapping formula heating unit Download PDFInfo
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- CN205783233U CN205783233U CN201620457718.8U CN201620457718U CN205783233U CN 205783233 U CN205783233 U CN 205783233U CN 201620457718 U CN201620457718 U CN 201620457718U CN 205783233 U CN205783233 U CN 205783233U
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Abstract
This utility model provides a kind of ultra low temperature overlapping formula heating unit, including cryogenic system and high-temperature systems, it is characterized in that high-temperature systems is additionally arranged high temperature economizer, the outlet of warm condenser divides two, one branch is directly connected with a passage inlet of high temperature economizer, the outlet of one path of high temperature economizer connects high temperature throttling arrangement, after be connected with evaporative condenser again；Another branch is connected with the air injection enthalpy-increasing mouth of high temperature compressor after connecing the bypass choke valve of high temperature economizer.This unit operation environmental field is wider, and heating capacity and heating energy efficiency ratio are higher, heat water temperature higher；And heating stability is higher under low temperature environment, service life is longer, and the suitability is higher: can preferably adapt to the different heating loads at a temperature of the varying environment of whole Heating Period.Use hot gas bypass defrosting and intelligent defrosting to control technology, overcome tradition overlapping air source heat pump four-way valve defrosting system unstable, heat and must stop the defect low with heating efficiency.
Description
Technical field
This utility model relates to cold and heat supply apparatus field, particularly to a kind of ultra low temperature overlapping formula heat supplier
Group.
Background technology
At present the common air-source heat pump water chiller-heater of China is air conditioning unit and air source heat pump heating unit is basic
On be two kinds of independent devices, they are by compressor, heat exchanger, reducer, heat extractor, compressor
The blood circulation constituted in device.Coolant under the effect of compressor at system internal circulation flow.It
Completing the boosting temperature-rise period of gaseous state in compressor, temperature is up to 100 DEG C, and it is carried out with wind after entering heat exchanger
Heat exchanges, cooled and be converted into flow liquid state, and after it runs to heat extractor, liquid is absorbed heat rapidly evaporation
Be again converted to gaseous state, simultaneously at a temperature of be down to subzero 20 DEG C 30 DEG C, the at this moment air of heat extractor periphery
Continuously low-temperature heat quantity will be passed to coolant.Coolant constantly circulates be achieved that in air low
Warm amount is changed into heat of high temperature and adds the process of heating.
The most traditional Air Resource Heat Pump Unit and air source heat pump heating unit be two independent
Equipment, functions of the equipments are single, and utilization rate of equipment and installations is low and energy utilization rate is on the low side.Tradition cascade type heat pump heat
Water unit efficiency is on the low side, and unit heating operation operating mode is severe, and system compresses ratio is bigger than normal, and delivery temperature is high, profit
Oil viscosity is on the low side, and heat production coolant-temperature gage is not the highest, and unstable during system defrosting, the service life of system is relatively
The problem such as short.
Utility model content
For disadvantages described above, this utility model purpose is that how providing a kind of is suitable for the severe rings such as low temperature environment
Border, and the superposition type heating unit that Energy Efficiency Ratio is higher.
In order to solve problem above, the utility model proposes a kind of ultra low temperature overlapping formula heating unit, including
Cryogenic system and high-temperature systems, it is characterised in that in high-temperature systems, be additionally arranged high temperature economizer, warm condenser
Outlet divide two, a branch is directly connected with a passage inlet of high temperature economizer, high temperature economy
The outlet of one path of device connects high temperature throttling arrangement, after be connected with evaporative condenser again；Another branch connects height
It is connected with the air injection enthalpy-increasing mouth of high temperature compressor after the bypass choke valve of temperature economizer.
Described ultra low temperature overlapping formula heating unit, it is characterised in that evaporate at low temperature fin in cryogenic system
Low temperature bypass valve it is additionally arranged between the gas outlet of device and cryogenic compressor.
Described ultra low temperature overlapping formula heating unit, it is characterised in that described cryogenic compressor is DC frequency-changing pressure
Contracting machine.
Described ultra low temperature overlapping formula heating unit, it is characterised in that the operational mode of control system includes defrosting
Operational mode.
This utility model implement ultra low temperature overlapping formula heating unit running environment wider, heating capacity and
Heating energy efficiency ratio is higher, heats water temperature higher；And heating stability is higher under low temperature environment, use the longevity
Ordering longer, the suitability is higher: can preferably adapt to the difference at a temperature of the varying environment of whole Heating Period and adopt
Warm load.Use hot gas bypass defrosting and intelligent defrosting to control technology, overcome tradition overlapping air source heat pump
Four-way valve defrosting system is unstable, heats and must stop the defect low with heating efficiency.
Accompanying drawing explanation
Fig. 1 is ultra low temperature overlapping formula heat supplier group system block diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical scheme in this utility model embodiment
It is clearly and completely described, it is clear that described embodiment is only that this utility model part is implemented
Example rather than whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into this utility model and protects
The scope protected.
Fig. 1 is ultra low temperature overlapping formula heat supplier group system block diagram, and system includes high-temperature systems and cryogenic system,
High-temperature systems mainly includes high temperature choke valve 22, high temperature compressor 23, high temperature economizer 24, high temperature economizer
Bypass choke valve 25, warm condenser 26, high temperature refrigerant, high-temperature four-way valve 27 and high temperature gas-liquid separation
Device 28；Cryogenic system mainly includes cryogenic vaporizer blower fan 14, low temperature evaporator fin 15, and low temperature gas-liquid is divided
From device 16, cryogenic compressor 17, low temperature bypass valve 18, low temperature throttling arrangement 19, low-temperature liquid storage tank 20,
Low-temperature evaporation condenser 21 and low-temperature refrigerant；High-temperature systems and cryogenic system the most also include the connection copper of necessity
Pipe.
According to environment and user's needs, ultra low temperature overlapping formula heating unit choosing multiple mode operation, wherein
Having the pattern of marked feature compared to tradition superposition type heating unit is: ultralow temperature heating operation mode and removing
Frost operational mode.
Ultralow temperature heating operation mode:
When needing heating operation in low temperature environment, high-temperature systems and cryogenic system start simultaneously.Pass through high temperature
The work of system provides high-temperature-hot-water for heating system.High-temperature systems work is as follows: high temperature compressor 23 is by gas
The high temperature refrigerant of state low-temp low-pressure is compressed into the high temperature refrigerant gas of High Temperature High Pressure and passes through high temperature after sucking
Enter in warm condenser 26 after cross valve 27 and carry out heat release, be condensed into the temperature refrigerant liquid warp of high pressure
Crossing and be divided into two-way, wherein the cold-producing medium of main road enters into high temperature throttling after high temperature economizer 24 cools down again
Device 22 carries out reducing pressure by regulating flow, enters evaporative condenser after becoming the high temperature refrigerant gas-liquid mixture of low-temp low-pressure
Device 21 is evaporated heat absorption, and the gaseous state high temperature refrigerant becoming low-temp low-pressure is laggard through high-temperature four-way valve 27
Enter High Temperature Gas liquid/gas separator 28, be then return in high temperature compressor 33 continue this cycle of operation.Another road is auxiliary
The cold-producing medium on road is carried out through too high temperature economizer 24 by after high temperature economizer bypass choke valve 25 reducing pressure by regulating flow
Heat absorption evaporation, becomes and returns to compressor continuation in the air injection enthalpy-increasing mouth of gaseous refrigerant entrance high temperature compressor 23
Whole cycle of operation.Whole high-temperature systems constantly provides the heating hot water of high temperature to heating system.But it is whole
The thermal source of individual high-temperature systems is all provided by the low temperature of folding type cooling system.The work process of cryogenic system is as follows:
Cryogenic compressor 17 is compressed into the low temperature system of High Temperature High Pressure after being sucked by the low-temperature refrigerant of gaseous state low-temp low-pressure
Refrigerant gas direct evaporation condenser 21 carries out heat release and provides thermal source to high-temperature systems, the low temperature of High Temperature High Pressure
Refrigerant gas is cooled to be condensed into the low-temperature refrigerant liquid then warp of high pressure after evaporative condenser 21
The low temperature gas-liquid of low-temp low-pressure is become to mix by low temperature throttling arrangement 19 reducing pressure by regulating flow after crossing low temperature reservoir 20
Close cold-producing medium, be then evaporated heat absorption by low temperature evaporator fin 15, provide for whole superposition type system
Run final origin of heat be provided, the gaseous state low-temperature refrigerant becoming low-temp low-pressure divides through low temperature gas-liquid
From device 16, it is then return in cryogenic compressor 17 continue this cycle of operation.The operation of whole superposition type system
It is unable to do without high-temperature systems and the cooperating operation of cryogenic system.The heat being absorbed external environment by cryogenic system is same
Time constantly transfer heat to heating hot water by high-temperature systems, constantly heat to heating hot water.Simultaneously
Cryogenic system uses DC frequency-changing refrigeration system, and cryogenic compressor 17 uses DC frequency-changeable compressor, whole system
System FREQUENCY CONTROL by outside environment and use side drying thermic load be adjusted, thus prevent because of
The load of high and low pressure system does not mate and causes whole system fluctuation of service or break down.
Defrost operation pattern:
Heat pump runs the phenomenon that frosting can occur unavoidably, the quality of source pump defrost at low ambient temperatures
Directly decide the heating efficiency of whole system, particularly superposition type system, the direct shadow of defrost of cryogenic system
Ring the running status to high-temperature systems, the high temperature when defrost of this novel ultra low temperature overlapping formula heating unit runs
When the operation logic of system heats with normal low temp identical, and the same heating operation of the overall operation of cryogenic system,
The simply low temperature refrigerant gas major part direct evaporation condenser of the High Temperature High Pressure after cryogenic compressor 17 compression
Then complete whole circulation in 21, and the low temperature refrigerant gas of only fraction High Temperature High Pressure is by by low temperature
Logical valve 18 is directly entered in low temperature evaporator fin 15, utilizes the characteristic of its High Temperature High Pressure to be steamed by low temperature fin
The frost sent out on device 15 melts, and cold-producing medium self is cooled to the gaseous refrigerant of low-temp low-pressure and passes through low-temp. portion simultaneously
Divide gas-liquid separator 16, be then return in cryogenic compressor 17 continue this cycle of operation.Whole defrosting be
System is carried out after reaching defrosting condition.During defrosting, cryogenic system still heats circulation, the most in a steady stream carrying out
Constantly provide thermal source for high-temperature systems, so this defrosting formal system steady operation, do not interfere with high temperature
System properly functioning.
Above disclosed only this utility model one embodiment, can not limit this reality with this certainly
By novel interest field, one of ordinary skill in the art will appreciate that and realize the whole of above-described embodiment or portion
Split flow, and the equivalent variations made according to this utility model claim, still fall within what utility model was contained
Scope.
Claims (4)
1. a ultra low temperature overlapping formula heating unit, including cryogenic system and high-temperature systems, it is characterised in that high temperature system
Being additionally arranged high temperature economizer in system, the outlet of warm condenser divides two, and branch is directly and high temperature
One passage inlet of economizer is connected, and the outlet of a path of high temperature economizer connects high temperature throttling arrangement,
After be connected with evaporative condenser again；Another branch connect after the bypass choke valve of high temperature economizer with high-temperature high-pressure
The air injection enthalpy-increasing mouth of contracting machine is connected.
Ultra low temperature overlapping formula the most according to claim 1 heating unit, it is characterised in that in cryogenic system
Low temperature bypass valve it is additionally arranged between the gas outlet of low temperature evaporator fin and cryogenic compressor.
Ultra low temperature overlapping formula the most according to claim 2 heating unit, it is characterised in that described cryogenic compressor
For DC frequency-changeable compressor.
Ultra low temperature overlapping formula the most according to claim 3 heating unit, it is characterised in that the operation of control system
Pattern includes Defrost operation pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620457718.8U CN205783233U (en) | 2016-05-18 | 2016-05-18 | A kind of ultra low temperature overlapping formula heating unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620457718.8U CN205783233U (en) | 2016-05-18 | 2016-05-18 | A kind of ultra low temperature overlapping formula heating unit |
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| CN205783233U true CN205783233U (en) | 2016-12-07 |
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| CN201620457718.8U Active CN205783233U (en) | 2016-05-18 | 2016-05-18 | A kind of ultra low temperature overlapping formula heating unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758045A (en) * | 2016-04-25 | 2016-07-13 | 深圳市派沃新能源科技有限公司 | Ultralow-temperature overlapped triple generation heat pump unit |
| CN107763857A (en) * | 2017-10-27 | 2018-03-06 | 顺德职业技术学院 | Frequency conversion air injection enthalpy increasing heat pump water heater frequency dynamic optimizes and control method |
| WO2021103053A1 (en) * | 2019-11-28 | 2021-06-03 | 江苏苏净集团有限公司 | Carbon dioxide overlapping type heating system, and control method therefor |
-
2016
- 2016-05-18 CN CN201620457718.8U patent/CN205783233U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758045A (en) * | 2016-04-25 | 2016-07-13 | 深圳市派沃新能源科技有限公司 | Ultralow-temperature overlapped triple generation heat pump unit |
| CN107763857A (en) * | 2017-10-27 | 2018-03-06 | 顺德职业技术学院 | Frequency conversion air injection enthalpy increasing heat pump water heater frequency dynamic optimizes and control method |
| WO2019080275A1 (en) * | 2017-10-27 | 2019-05-02 | 顺德职业技术学院 | Frequency dynamic optimization and control method for frequency conversion enhanced vapor injection heat-pump water heater |
| WO2021103053A1 (en) * | 2019-11-28 | 2021-06-03 | 江苏苏净集团有限公司 | Carbon dioxide overlapping type heating system, and control method therefor |
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