CN206269418U - Multi-connected machine heat pump with three-level centrifugal compressor - Google Patents
Multi-connected machine heat pump with three-level centrifugal compressor Download PDFInfo
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- CN206269418U CN206269418U CN201621212689.5U CN201621212689U CN206269418U CN 206269418 U CN206269418 U CN 206269418U CN 201621212689 U CN201621212689 U CN 201621212689U CN 206269418 U CN206269418 U CN 206269418U
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- compression chamber
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- stage compression
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Abstract
The utility model discloses a kind of multi-connected machine heat pump with three-level centrifugal compressor,Including compressor,Four-way valve,Gas-liquid separator,Condenser,Tracheae stop valve,Oil eliminator,Main electric expansion valve,Liquid pipe stop valve,Evaporator,The compressor includes the one stage of compression chamber being sequentially connected with,Two-stage compression chamber and three stage compression chamber,The air inlet in the one stage of compression chamber is connected with the exhaust outlet of the gas-liquid separator,The exhaust outlet in the one stage of compression chamber is connected with the first triple valve,The other two ends of first triple valve are connected with the air inlet and exhaust outlet in the two-stage compression chamber respectively,The exhaust outlet in the two-stage compression chamber is also associated with the second triple valve,The other end of second triple valve is connected with the air inlet and exhaust outlet in the three stage compression chamber respectively,The exhaust outlet in the three stage compression chamber is connected with the oil eliminator.This heat pump can meet the performance requirement under the different load of system, and system effectiveness is high under sub-load.
Description
Technical field
The utility model is related to a kind of heat pump, specifically, is related to a kind of with three-level centrifugal compressor
Multi-connected machine heat pump.
Background technology
Using scroll compressor more in existing the multi-connected machine heat pump field, especially under low temperature ambient conditions, compressor
It is less efficient, and centrifugal compressor is used for large-scale cooling-water machine system, although efficiency is higher than scroll compressor, but by
Limited in its size and pressure ratio, it is impossible to for the multiple on-line system of small cold, can not well apply transformations to multi-connected machine
System.Multi-connected machine heat pump all can be reduced constantly with the reduction of environment temperature, heating capacity and heating efficiency, and people are to heating capacity
Demand be but continuously increased with the decline of environment temperature.Major technique reason is the scroll compression that normal air source heat pump is used
When contracting machine works at low ambient temperatures, the delivery temperature of compressor can exceed the working range that compressor is allowed, and compressor occurs
Frequently start and stop, it is impossible to normal work, when environment temperature is dropped to below 5 DEG C, evaporator surface can also frosting so that heat exchange system
Number is reduced, and heat pump needs continuous defrost to ensure the normal operation of system, and greatly reduces the comfortableness of user.In addition,
In order to absorb heat from outdoor air, its evaporating temperature will be preferably minimized heat pump, now the inspiratory volume increase of compressor, system
Refrigerant circulation reduces, and the pressure ratio of compressor increases, and volumetric efficiency declines, and heat pump heating capacity and COP will significantly
Reduce.The heating capacity that air source heat pump is improved under worst cold case is also all the time the problem that air-conditioning circle needs to solve.
In order to improve the heating capacity of multiple on-line system under worst cold case, air-conditioning heat pump researcher did extensive work, industry
Interior enterprise is proposed low-temperature strong-heating multi-split system successively in recent years, and quasi- two-stage compression system is employed mostly, also has and passes through
Increase the mode of supplementary module, release real two-stage compressor multiple on-line system.But, system is due to secondly level compression module
It is separately provided, needs to be connected with host module by pipeline during in-site installation, causes floor space to increase, and it is difficult to increase installation
Degree, system cannot realize many parallel connections of outer machine of big number, it is impossible to meet the requirement of bigger load.
The content of the invention
The utility model is separately provided to solve the multi-stage compression module of existing multi-connected machine heat pump, during in-site installation
Need to be connected with host module by pipeline, with floor space increase, a series of problems, such as installation difficulty is high, it is proposed that a kind of
Multi-connected machine heat pump with three-level centrifugal compressor, can solve the above problems.
In order to solve the above-mentioned technical problem, the utility model is achieved using following technical scheme：
A kind of multi-connected machine heat pump with three-level centrifugal compressor, including compressor, four-way valve and the four-way
The e ends connection of the condenser and the four-way valve of the c ends connection of the gas-liquid separator and the four-way valve of the s ends connection of valve
Tracheae stop valve and the four-way valve d ends connection oil eliminator, the main electric expansion valve being connected with the condenser and
The steaming that the main electric expansion valve connected liquid pipe stop valve, two ends are connected with the tracheae stop valve and liquid pipe stop valve respectively
Hair device, the compressor includes the one stage of compression chamber, two-stage compression chamber and the three stage compression chamber that are sequentially connected with, the one stage of compression chamber
Air inlet be connected with the exhaust outlet of the gas-liquid separator, the exhaust outlet in the one stage of compression chamber is connected with the first triple valve,
The other two ends of first triple valve are connected with the air inlet and exhaust outlet in the two-stage compression chamber respectively, the two-stage compression
The exhaust outlet in chamber is also associated with the second triple valve, and the other end of second triple valve is entered with the three stage compression chamber respectively
Gas port and exhaust outlet are connected, and the exhaust outlet in the three stage compression chamber is connected with the oil eliminator.
Further, described multi-connected machine heat pump also includes the first sheet heat exchanger, and first sheet heat exchanger includes
First heat exchanger channels and the first air supply passage, first heat exchanger channels are connected to the main electric expansion valve and liquid pipe stop valve
Between, one end of first air supply passage is connected by the first electric expansion valve with the main electric expansion valve, other end
Air inlet with the two-stage compression chamber is connected.
Further, described multi-connected machine heat pump also includes the second sheet heat exchanger, and second sheet heat exchanger includes
Second heat exchanger channels and the second air supply passage, described second heat exchanger channels one end are connected with first heat exchanger channels, and in addition one
End is connected with the liquid pipe stop valve, and described second air supply passage one end is logical with the described first heat exchange by the second electric expansion valve
Road is connected, and other end is connected with the air inlet in the three stage compression chamber.
Further, the compressor is centrifugal compressor, the one stage of compression chamber, two-stage compression chamber and three stage compression
The impeller size being respectively arranged with chamber in impeller, and the one stage of compression chamber, two-stage compression chamber and three stage compression chamber is sequentially passed
Increase.
Further, the output end of the condenser is also connected by a path with the input of the gas-liquid separator,
Liquid injection valve is provided with the path.
Further, the output end of the oil eliminator is connected by feather valve with the input of the gas-liquid separator.
Compared with prior art, advantage of the present utility model and good effect are：It is of the present utility model to be centrifuged with three-level
The multi-connected machine heat pump of formula compressor, by adjusting two flow directions of triple valve, can respectively realize one-level, two grades, three-level
Different tandem compounds, with the performance requirement under the different load for meeting system, limit of power is adjustable from 2Hp-80Hp, may replace one
Individual or multiple scroll compressors, system effectiveness is high under sub-load, therefore, remaining the advantage of conventional centrifugal compressor
Outside, compressor operation scope can also be widened, to multiple on-line system, even unit machine system, domestic air conditioning can use, from
And can realize energy-efficient.
After the detailed description of the utility model implementation method is read in conjunction with the figure, other features of the present utility model and advantage
Will become clearer.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of implementation of the multi-connected machine heat pump with three-level centrifugal compressor that the utility model is proposed
Example system diagram.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one, the present embodiment proposes a kind of multi-connected machine heat pump with three-level centrifugal compressor, such as Fig. 1
It is shown, including compressor 1, four-way valve 2 and four-way valve 2 s ends connection gas-liquid separator 4 and four-way valve 2 c ends connection
The oil eliminator 14 of the d ends connection of the tracheae stop valve 3 and four-way valve 2 of the e ends connection of condenser 5 and four-way valve 2, with condensation
The liquid pipe stop valve 7, two ends that is connected with main electric expansion valve 6 of main electric expansion valve 6 of the connection of device 5 respectively with tracheae stop valve 3
The evaporator 8 connected with liquid pipe stop valve 7, compressor 1 includes the one stage of compression chamber 10, the two-stage compression chamber 11 and three that are sequentially connected with
Level compression chamber 12, the air inlet in one stage of compression chamber 10 is connected with the exhaust outlet of gas-liquid separator 4, the exhaust outlet in one stage of compression chamber 10
The first triple valve 9 is connected with, the other two ends of the first triple valve 9 connect with the air inlet and exhaust outlet in two-stage compression chamber 11 respectively
Connect, the exhaust outlet in two-stage compression chamber 11 is also associated with the second triple valve 13, the other end of the second triple valve 13 respectively with three-level
Air inlet and the exhaust outlet connection of compression chamber 12, the exhaust outlet in three stage compression chamber 12 are connected with oil eliminator 14.The utility model
The multi-connected machine heat pump with three-level centrifugal compressor, compressor include one stage of compression chamber, two-stage compression chamber, three-level pressure
Contracting chamber, three designs for monolithic construction, without being respectively mounted, by adjusting two flow directions of triple valve, can respectively realize one
Level compression chamber, two-stage compression chamber, the different tandem compounds in three stage compression chamber, will with the performance under the different load for meeting system
Ask, limit of power is adjustable from 2Hp-80Hp, may replace one or more scroll compressors, system effectiveness is high under sub-load,
Additionally, the compressor in the system is outside the advantage for remaining conventional centrifugal compressor, can also be by compressor operation model
Enclose and widen, to multiple on-line system, even unit machine system, domestic air conditioning can use, so as to can realize energy-efficient.
Multi-connected machine heat pump in the present embodiment also includes the first sheet heat exchanger 15, as shown in figure 1, the first sheet heat exchanger
15 include the first heat exchanger channels and the first air supply passage, and the first heat exchanger channels are connected to main electric expansion valve 6 and liquid pipe stop valve 7
Between, one end of the first air supply passage is connected by the first electric expansion valve 16 with main electric expansion valve 6, other end with two grades
The air inlet connection of compression chamber 11.When the pressure at expulsion of one stage of compression chamber output is inadequate, by controlling the first electric expansion valve
16 open, and are that it carries out tonifying Qi, to improve the pressure at expulsion in one stage of compression chamber, improve compression efficiency.
As a same reason, multi-connected machine heat pump also includes the second sheet heat exchanger 17, and the second sheet heat exchanger 17 includes second
Heat exchanger channels and the second air supply passage, second heat exchanger channels one end are connected with the first heat exchanger channels, and other end is ended with liquid pipe
Valve 7 is connected, and second air supply passage one end is connected by the second electric expansion valve 18 with the first heat exchanger channels, other end and three-level
The air inlet connection of compression chamber 12.When the pressure at expulsion of two-stage compression chamber output is inadequate, by controlling the second electric expansion valve
18 open, and are that it carries out tonifying Qi, to improve the pressure at expulsion in two-stage compression chamber.
Additionally, the first sheet heat exchanger 15 and the second sheet heat exchanger 17 can also be substituted using flash tank realize, equally can be with
It is embodied as two-stage compression chamber, the function of three stage compression chamber tonifying Qi.
Compressor 1 is to divide in centrifugal compressor, the one stage of compression chamber 10, two-stage compression chamber 11 and three stage compression chamber 12
The impeller size not being provided with impeller, and one stage of compression chamber 10, two-stage compression chamber 11 and three stage compression chamber 12 is sequentially incremented by.Make
Compressed capability per one-level is variant.Control logic then can be according to the difference of load, the flow direction of regulating three-way valve, can be respectively
Realize one-level, two grades, the different tandem compounds of three-level, with the performance requirement under the different load for meeting system.For example set one
The load-bearing capacity of level compression chamber 10 is that the load-bearing capacity in 10%, two-stage compression chamber 11 is 40%, the load-bearing capacity in three stage compression chamber 12
It is 50%：
When compressor capacity load is 10%, two-stage compression chamber 11 is bypassed using the first triple valve 9, and pipeline, while
The bypass of three stage compression chamber 12 is fallen using the second triple valve 13 and pipeline, is now only compressed using one stage of compression chamber 10,
Meet performance requirement.
When load needed for compressor capacity is 50%, the flow of the first triple valve 9 is oriented to and adjusts to two-stage compression chamber 11, profit
Three stage compression chamber 12 is bypassed with the second triple valve 13 and pipeline, one stage of compression chamber 10+ two-stage compressions chamber 11 is now realized
Tandem compound, meet performance requirement.
When load needed for compressor capacity is 100%, the flow of the first triple valve 9 is oriented to and adjusts to two-stage compression chamber 11, the
The flow of two triple valve 13 is oriented to and adjusts to three stage compression chamber 12, now realizes one stage of compression chamber 10+ two-stage compressions chamber 11+ three-level pressures
The tandem compound in contracting chamber 12, meets performance requirement.
The output end of condenser 5 is also connected by a path with the input of gas-liquid separator 4, and spray is provided with the path
Liquid valve 19.
The output end of oil eliminator 14 is connected by feather valve 20 with the input of gas-liquid separator 4.
Certainly, described above is not that, to limitation of the present utility model, the utility model is also not limited to the example above,
Change, remodeling, addition or replacement that those skilled in the art are made in essential scope of the present utility model,
Also protection domain of the present utility model should be belonged to.
Claims (6)
1. a kind of multi-connected machine heat pump with three-level centrifugal compressor, including compressor, four-way valve and the four-way valve
S ends connection gas-liquid separator and the four-way valve c ends connection condenser and the four-way valve e ends connection gas
The oil eliminator of the d ends connection of pipe stop valve and the four-way valve, the main electric expansion valve being connected with the condenser and institute
State the evaporation that main electric expansion valve connected liquid pipe stop valve, two ends are connected with the tracheae stop valve and liquid pipe stop valve respectively
Device, it is characterised in that：The compressor includes the one stage of compression chamber, two-stage compression chamber and the three stage compression chamber that are sequentially connected with, described
The air inlet in one stage of compression chamber is connected with the exhaust outlet of the gas-liquid separator, and the exhaust outlet in the one stage of compression chamber is connected with
One triple valve, the other two ends of first triple valve are connected with the air inlet and exhaust outlet in the two-stage compression chamber respectively, institute
The exhaust outlet for stating two-stage compression chamber is also associated with the second triple valve, the other end of second triple valve respectively with the three-level
Air inlet and the exhaust outlet connection of compression chamber, the exhaust outlet in the three stage compression chamber are connected with the oil eliminator.
2. multi-connected machine heat pump according to claim 1, it is characterised in that：Described multi-connected machine heat pump also includes
First sheet heat exchanger, first sheet heat exchanger includes the first heat exchanger channels and the first air supply passage, first heat exchanger channels
It is connected between the main electric expansion valve and liquid pipe stop valve, one end of first air supply passage passes through the first electronic expansion
Valve is connected with the main electric expansion valve, and other end is connected with the air inlet in the two-stage compression chamber.
3. multi-connected machine heat pump according to claim 2, it is characterised in that：Described multi-connected machine heat pump also includes
Second sheet heat exchanger, second sheet heat exchanger includes the second heat exchanger channels and the second air supply passage, second heat exchanger channels
One end is connected with first heat exchanger channels, and other end is connected with the liquid pipe stop valve, described second air supply passage one end
It is connected with first heat exchanger channels by the second electric expansion valve, other end connects with the air inlet in the three stage compression chamber
Connect.
4. the multi-connected machine heat pump according to claim any one of 1-3, it is characterised in that：The compressor is centrifugal
Compressor, is respectively arranged with impeller, and the one stage of compression in the one stage of compression chamber, two-stage compression chamber and three stage compression chamber
Impeller size in chamber, two-stage compression chamber and three stage compression chamber is sequentially incremented by.
5. the multi-connected machine heat pump according to claim any one of 1-3, it is characterised in that：The output end of the condenser
Also it is connected with the input of the gas-liquid separator by a path, liquid injection valve is provided with the path.
6. the multi-connected machine heat pump according to claim any one of 1-3, it is characterised in that：The output of the oil eliminator
End is connected by feather valve with the input of the gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621212689.5U CN206269418U (en) | 2016-11-10 | 2016-11-10 | Multi-connected machine heat pump with three-level centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621212689.5U CN206269418U (en) | 2016-11-10 | 2016-11-10 | Multi-connected machine heat pump with three-level centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206269418U true CN206269418U (en) | 2017-06-20 |
Family
ID=59038055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621212689.5U Withdrawn - After Issue CN206269418U (en) | 2016-11-10 | 2016-11-10 | Multi-connected machine heat pump with three-level centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206269418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500393A (en) * | 2016-11-10 | 2017-03-15 | 青岛海尔中央空调有限公司 | There is the multi-connected machine heat pump of three-level centrifugal compressor |
| CN108426385A (en) * | 2018-04-17 | 2018-08-21 | 珠海格力电器股份有限公司 | Heat pump system and air conditioner |
| CN114593040A (en) * | 2022-03-21 | 2022-06-07 | 西安佰能达动力科技有限公司 | System and method for converting variable-pressure air inlet and balanced pressure of multi-stage circulating liquid seal compressor |
-
2016
- 2016-11-10 CN CN201621212689.5U patent/CN206269418U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500393A (en) * | 2016-11-10 | 2017-03-15 | 青岛海尔中央空调有限公司 | There is the multi-connected machine heat pump of three-level centrifugal compressor |
| CN106500393B (en) * | 2016-11-10 | 2023-09-29 | 青岛海尔中央空调有限公司 | Multi-split heat pump system with three-stage centrifugal compressor |
| CN108426385A (en) * | 2018-04-17 | 2018-08-21 | 珠海格力电器股份有限公司 | Heat pump system and air conditioner |
| CN108426385B (en) * | 2018-04-17 | 2023-12-08 | 珠海格力电器股份有限公司 | Heat pump system and air conditioner |
| CN114593040A (en) * | 2022-03-21 | 2022-06-07 | 西安佰能达动力科技有限公司 | System and method for converting variable-pressure air inlet and balanced pressure of multi-stage circulating liquid seal compressor |
| CN114593040B (en) * | 2022-03-21 | 2024-01-26 | 西安佰能达动力科技有限公司 | Variable-pressure air inlet and balance pressure conversion system and method for multistage circulating liquid seal compressor |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170620 Effective date of abandoning: 20230929 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170620 Effective date of abandoning: 20230929 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |