CN106610145A - Air source heat pump heating system and control method thereof - Google Patents
Air source heat pump heating system and control method thereof Download PDFInfo
- Publication number
- CN106610145A CN106610145A CN201510688122.9A CN201510688122A CN106610145A CN 106610145 A CN106610145 A CN 106610145A CN 201510688122 A CN201510688122 A CN 201510688122A CN 106610145 A CN106610145 A CN 106610145A
- Authority
- CN
- China
- Prior art keywords
- vaporizer
- heating system
- air source
- heat pump
- regenerator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/06—Superheaters
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
Abstract
The invention discloses an air source heat pump heating system and a control method thereof, and belongs to the technical field of heat pumps. The air source heat pump heating system is designed to solve the problems that an existing air source heat pump heating system is too high in condenser outlet refrigerant equipment and too low in evaporation temperature. According to the air source heat pump heating system, a heat regenerator first branch communicates between a refrigerant outlet of a condenser and a refrigerant inlet of a throttle element; a heat regenerator second branch communicates between an inlet of a compressor and a refrigerant outlet of a first evaporator; and a second evaporator communicates between the refrigerant outlet of the condenser and a refrigerant inlet of the heat regenerator first branch and is used for carrying out heat exchange on refrigerant flowing out of the condenser. According to the control method of the air source heat pump heating system, the refrigerant flowing out of the condenser sequentially flows through the second evaporator and the heat regenerator first branch and then flows into the throttle element. The air source heat pump heating system can guarantee the proper refrigerant temperature generated before throttling and improve the evaporator heating capacity.
Description
Technical field
The present invention relates to art of heat pumps, and in particular to a kind of air source heat pump heating system and be based on the air
The control method of source thermodynamic heating system.
Background technology
In recent years, heat pump techniques receive much concern as a kind of new energy technology, and its application is also quite varied.
Air source heat pump heating system mainly includes compressor, condenser, restricting element and vaporizer.
A kind of existing carbon dioxide heat pump system, the system is except including compressor, condenser, restricting element
And beyond vaporizer, also include regenerator, the temperature and pressure that coolant enters restricting element is controlled by regenerator
Contracting machine suction temperature；Also a kind of heating air conditioner system, is provided with dual flow path vaporizer, that is, steams in the system
Send out device base section pipeline connection condensator outlet, condenser flow into vaporizer higher temperature coolant can in case
Only base of evaporator freezes.
The drawbacks of above two system has certain, carbon dioxide heat pump system are too high in heating return water temperature
When flow out condenser refrigerant temperature it is higher, compressor air suction temperature is still resulted in when lowering the temperature merely through regenerator
Degree is too high to normal work；Heating air conditioner system only cannot also ensure Suitable compression by dual flow path vaporizer
Refrigerant temperature before machine suction temperature and throttling.
The content of the invention
It is an object of the invention to propose that one kind can reduce throttle front refrigerant temperature, raising blood circulation effect
The air source heat pump heating system of rate.
Another object of the present invention is to propose a kind of heating capacity that can improve whole machine, raising system reliability
The air source heat pump heating system of property.
Another object of the present invention is to propose a kind of control more accurate, compressor operating air in hgher efficiency
The control method of source thermodynamic heating system.
It is up to this purpose, on the one hand, the present invention is employed the following technical solutions：
A kind of air source heat pump heating system, including be sequentially connected in series to form closed circuit compressor, condenser,
Restricting element and the first vaporizer, in the refrigerant import of the refrigerant exit and the restricting element of the condenser
Between be communicated with regenerator tie point；Go out in the import of the compressor and the coolant of first vaporizer
The second branch road of regenerator is communicated between mouthful；In the refrigerant exit and the regenerator first of the condenser
The second vaporizer is communicated between the refrigerant inlet on road, it is from the condenser stream that second vaporizer is used for
The coolant heat exchange for going out.
Used as a preferred version of the present invention, first vaporizer and second vaporizer are integrated into one
Body formula heat exchanger.
Used as a preferred version of the present invention, the integral heat exchanger includes two branch roads, wherein one
Branch road is first vaporizer, and another branch road is second vaporizer.
As a preferred version of the present invention, the second branch road of the regenerator tie point and the regenerator
The formula that becomes one regenerator, the integral type regenerator are tubular type regenerator.
Used as a preferred version of the present invention, first vaporizer and second vaporizer are tubular type
Heat exchanger.
On the other hand, the present invention is employed the following technical solutions：
A kind of control method based on above-mentioned air source heat pump heating system, the control method is to heat
The coolant that condenser is flowed out in journey is flowed into after the second vaporizer and the heat exchange of regenerator tie point is flowed through successively again
Restricting element.
Further, when the air source heat pump heating system is in heating operations, coolant is from the condensation
Device flows into the section after flowing through second vaporizer and regenerator tie point heat exchange after flowing out successively again
Fluid element, the coolant flowed out from the restricting element flow through the second branch road of regenerator Jing after the vaporization of the first vaporizer
Heat exchange enters back into compressor.
Beneficial effects of the present invention are：
(1), air source heat pump heating system of the invention is changed with one between condenser and restricting element
Hot loop, the coolant for not yet throttling enter back into restricting element after first passing through the heat-exchanging loop and thermal source generation exchange,
Between the first vaporizer and compressor inlet have another heat-exchanging loop, the coolant process after throttling this change
Compressor is entered back into after hot loop heat exchange, being designed to of this pair of heat-exchanging loop ensures cold before suitable throttling
Matchmaker's temperature and compressor air suction temperature, in particular for by CO2As coolant situation when, by heat-exchanging loop
The front temperature that throttles can be reduced, the loss in restricting element throttling process is reduced, the efficiency of blood circulation is improved.
(2), air source heat pump heating system coolant of the invention sequentially passed through before restricting element condenser,
Second vaporizer, regenerator tie point carry out three heat exchange coolings, then backheat is entered after the first vaporizer
Enter compressor, for the cooling of existing coolant once or twice is compared in the cooling of three coolant, the system of whole machine
Heat energy power is significantly improved, and system reliability is higher.
(3), air source heat pump heating system of the invention can be reclaimed from condenser stream by the second vaporizer
The heat of the higher coolant of the temperature that goes out, while low temperature environment evaporating temperature and caloric receptivity can be improved, improves
Evaporator pressure, improves compressor air suction efficiency and suction superheat, reduces compressor liquid hammer risk.
(4), the control method of air source heat pump heating system of the invention is that throttling is front first in heat-exchanging loop
Exchanged heat, after throttling in the coolant that the first vaporizer is vaporized again Jing after heat-exchanging loop heat exchange into compressor,
The control method flow process is simple, control more accurate, compressor operating is in hgher efficiency.
Description of the drawings
Fig. 1 is the structural representation of the air source heat pump heating system that the preferred embodiment of the present invention one is provided.
Fig. 2 is the structural representation of the integral heat exchanger that the preferred embodiment of the present invention one is provided.
Fig. 3 is the side view of the integral heat exchanger that the preferred embodiment of the present invention one is provided.
It is labeled as in figure：
1st, compressor；2nd, condenser；3rd, restricting element；41st, the first vaporizer；411st, the first evaporation
Device import；412nd, the first evaporator outlet；42nd, the second vaporizer；421st, the second evaporator；422、
Second evaporator outlet；51st, regenerator tie point；52nd, the second branch road of regenerator.
Specific embodiment
Technical scheme is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.
Preferred embodiment one：
This preferred embodiment discloses a kind of air source heat pump heating system.As shown in figure 1, air source heat pump is adopted
Heating system includes that being sequentially connected in series the compressor 1 to form closed circuit, condenser 2, restricting element 3 and first steams
Device 41 is sent out, wherein, restricting element 3 is preferably expansion valve.
Regenerator first is communicated between the refrigerant import of the refrigerant exit and restricting element 3 of condenser 2
Road 51；Regenerator second is communicated between the import of compressor 1 and the refrigerant exit of the first vaporizer 41
Road 52；Second is communicated between the refrigerant inlet of the refrigerant exit and regenerator tie point 51 of condenser 2
Vaporizer 42, the second vaporizer 42 are used to be the coolant heat exchange flowed out from condenser 2.
The concrete annexation of air source heat pump heating system is：The one of 1 outlet condenser 2 of compressor
End, the other end of condenser 2 connect the second evaporator 421, the connection backheat of the second evaporator outlet 422
51 one end of device tie point, other end connection expansion valve, expansion valve are connected with the first evaporator 411 again,
First evaporator outlet 412 is connected to 1 entrance of compressor Jing after the second branch road of regenerator 52.
In the present embodiment, as shown in Figures 2 and 3, preferably by the first vaporizer 41 and the second vaporizer 42
The formula that becomes one heat exchanger, the i.e. integral heat exchanger include two branch roads, wherein a branch road is first
Vaporizer 41, another branch road are the second vaporizer 42, and the coolant for flowing through the second vaporizer 42 can flow through the
One vaporizer 41, the integral heat exchanger are preferably pipe heat exchanger, or finned heat exchanger or pipe
Plate type heat exchanger, wherein, in Fig. 3, the direction of arrow is air flow.During work, coolant restricting element it
Before sequentially pass through condenser 2, the second vaporizer 42, regenerator tie point 51 carry out three times heat exchange cooling,
After the first vaporizer 41, backheat enters compressor 1 again, the cooling of three coolant compare it is existing once or
Twice for the cooling of coolant, the heating capacity of vaporizer, the heating capacity of whole machine are significantly improved,
System reliability is also higher
In the present embodiment, system coolant preferably adopts CO2, i.e. a kind of CO is provided2Air source heat pump heating system
System.The heat-exchanging loop that the system is arranged before throttling can be lowered into expansion valve before CO2Temperature, subtracts
The restriction loss of few expansion valve, improves the efficiency of blood circulation；First vaporizer when can increase low temperature environment
41 caloric receptivity simultaneously slows down its frosting velocity, improves the air-breathing effect of the pressure and compressor 1 of the first vaporizer 41
Rate, reduces compressor liquid hammer risk；Additionally, compressor 1 to run relatively reliable, service life longer.
Regenerator tie point 51 and the second branch road of regenerator 52 become one formula regenerator, and integral type is returned
Hot device is preferably tubular type regenerator.
Air source heat pump heating system in the present embodiment is the dual flow path of regenerator and vaporizer to be combined one
A heat-exchanging loop before forming throttling and a heat-exchanging loop after throttling are acted, only existing system is solved
When regenerator is set compressor often occur as suction temperature is too high cannot normal work problem, or only
Before suitable compressor air suction temperature and throttling cannot be ensured when arranging dual flow path vaporizer, refrigerant temperature asks
Topic.
Said system is mainly used in heating system, and three times before the system can be realized throttling exchange heat, thus
Whole machine heating capacity is significantly improved, and the COP (heating energy efficiency ratio) of system is greatly enhanced, and work can
By stablizing, compared with the system only exchanged heat once or twice before existing throttling, heating capacity has bright
Aobvious advantage, is suitable to popularization and application on a large scale.
It is specially based on the control method of the air source heat pump heating system in the present embodiment：
When air source heat pump heating system is in heating operations, coolant is flowed through successively from after the outflow of condenser 2
Second vaporizer 42 and regenerator tie point 51 flow into restricting element 3 after exchanging heat again, flow from restricting element 3
The coolant for going out flows through the heat exchange of the second branch road of regenerator 52 Jing after the vaporization of the first vaporizer 41 and enters back into compressor 1.
Above-mentioned control method control is more accurate, and before can either ensureing suitable throttling, refrigerant temperature and compressor are inhaled
Temperature degree, can pass through heat of the second vaporizer recovery from the higher coolant of the temperature that condenser flows out again,
Low temperature environment evaporating temperature and caloric receptivity can be improved simultaneously, improve compressor air suction efficiency and systematic function.
Preferred embodiment two：
This preferred embodiment discloses a kind of air source heat pump heating system, in the air source heat pump heating system,
Coolant can be but not limited to CO2, its structure is essentially identical with preferred embodiment one.The air source heat pump
Heating system includes being sequentially connected in series the compressor to form closed circuit, condenser, restricting element and the first evaporation
Device, is communicated with regenerator tie point between the refrigerant import of the refrigerant exit and restricting element of condenser；
The second branch road of regenerator is communicated between the import of compressor and the refrigerant exit of the first vaporizer；In condensation
The second vaporizer, the second evaporation are communicated between the refrigerant inlet of the refrigerant exit and regenerator tie point of device
Device is used to be the coolant heat exchange flowed out from condenser.
Difference is：First vaporizer and the second vaporizer can become one structure, or
Two heat exchangers being respectively provided with, the first vaporizer can be realized vaporizing coolant, and the second vaporizer can be real
The coolant for now flowing out from condenser is cooled down；Two vaporizers can both be tubular structure, it is also possible to
It is board-like or other structures, heat exchange can be realized.
The air source heat pump heating system provided in the present embodiment is applied in heating system, due to air source heat
The heating capacity of pump heating system is greatly enhanced and then the heating capacity of heating system is also correspondingly improved, phase
Than in the heating capacity of existing heating system, being heated using the air source heat pump heating system and there is significantly effect
Really.
The air source heat pump heating system that the present embodiment is provided can also be applied in other heatings, such as empty
The fields such as tune, hot dryer, heating effect are superior to existing level, are suitable to promote on a large scale.
Control method based on the air source heat pump heating system described in the present embodiment and one base of preferred embodiment
This is identical, will not be described here.
In the description of above-described embodiment, it should be noted that address term " first ", " second ", "
Three " etc., it is only used for describing purpose, and it is not intended that indicating or implying relative importance.
It is more than to combine the embodiment that accompanying drawing is provided, is only to realize preferred version of the invention rather than a limitation,
Any specific embodiment to the present invention is modified or carries out equivalent to some technical characteristics, and
Without departing from the spirit of technical solution of the present invention, the technical scheme scope being claimed in the present invention all should be covered and worked as
In.Protection scope of the present invention does not also pay thinkable of creative work institute including those skilled in the art
What alternate embodiments.
Claims (7)
1. a kind of air source heat pump heating system, including be sequentially connected in series to form closed circuit compressor (1),
Condenser (2), restricting element (3) and the first vaporizer (41), it is characterised in that
Connect between the refrigerant import of the refrigerant exit and the restricting element (3) of the condenser (2)
There is regenerator tie point (51)；In import and first vaporizer (41) of the compressor (1)
Refrigerant exit between be communicated with the second branch road of regenerator (52)；In the refrigerant exit of the condenser (2)
It is communicated with the second vaporizer (42) and the refrigerant inlet of the regenerator tie point (51) between, described
Two vaporizers (42) exchange heat for the coolant to flow out from the condenser (2).
2. a kind of air source heat pump heating system according to claim 1, it is characterised in that described
One vaporizer (41) and second vaporizer (42) become one formula heat exchanger.
3. a kind of air source heat pump heating system according to claim 2, it is characterised in that described
Body formula heat exchanger includes two branch roads, wherein a branch road is first vaporizer (41), another branch road
For second vaporizer (42).
4. a kind of air source heat pump heating system according to claim 1, it is characterised in that described time
Hot device tie point (51) and the second branch road of the regenerator (52) become one formula regenerator, described
Integral type regenerator is tubular type regenerator.
5. according to a kind of arbitrary described air source heat pump heating system of claim 1-4, it is characterised in that
First vaporizer (41) and second vaporizer (42) are pipe heat exchanger.
6. a kind of control method based on the arbitrary air source heat pump heating system of claim 1 to 5, its
It is characterised by, the control method is that the coolant that condenser (2) is flowed out in heating operations is flowing through the successively
Restricting element (3) is flowed into again after two vaporizers (42) and regenerator tie point (51) heat exchange.
7. the control method of air source heat pump heating system according to claim 6, it is characterised in that
When the air source heat pump heating system is in the heating operations, coolant from after the condenser (2) outflow according to
It is secondary flow through second vaporizer (42) and the regenerator tie point (51) heat exchange after flow into again it is described
Restricting element (3), the coolant flowed out from the restricting element (3) are flowed Jing after the first vaporizer (41) vaporization
The second branch road of Jing regenerators (52) heat exchange enters back into compressor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510688122.9A CN106610145A (en) | 2015-10-21 | 2015-10-21 | Air source heat pump heating system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510688122.9A CN106610145A (en) | 2015-10-21 | 2015-10-21 | Air source heat pump heating system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN106610145A true CN106610145A (en) | 2017-05-03 |
Family
ID=58611292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510688122.9A Pending CN106610145A (en) | 2015-10-21 | 2015-10-21 | Air source heat pump heating system and control method thereof |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883788A (en) * | 2017-11-10 | 2018-04-06 | 山东奇威特太阳能科技有限公司 | Isolated heat exchanger |
| CN108954920A (en) * | 2018-08-22 | 2018-12-07 | 珠海格力电器股份有限公司 | The heat exchanger and air conditioner of air conditioner |
| CN111854206A (en) * | 2019-04-28 | 2020-10-30 | 青岛海尔智能技术研发有限公司 | Refrigerator equipment, refrigerating system and control method of refrigerating system |
| CN113028688A (en) * | 2021-04-28 | 2021-06-25 | 福建联创智业建设工程有限公司 | Supermarket cold chain energy-saving control method, device and system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883788A (en) * | 2017-11-10 | 2018-04-06 | 山东奇威特太阳能科技有限公司 | Isolated heat exchanger |
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| CN111854206A (en) * | 2019-04-28 | 2020-10-30 | 青岛海尔智能技术研发有限公司 | Refrigerator equipment, refrigerating system and control method of refrigerating system |
| CN113028688A (en) * | 2021-04-28 | 2021-06-25 | 福建联创智业建设工程有限公司 | Supermarket cold chain energy-saving control method, device and system |
| CN113028688B (en) * | 2021-04-28 | 2022-05-10 | 福建联创智业建设工程有限公司 | Supermarket cold chain energy-saving control method, device and system |
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Application publication date: 20170503 |