CN204438584U - Operation of air conditioning systems - Google Patents

Operation of air conditioning systems Download PDF

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Publication number
CN204438584U
CN204438584U CN201520026370.2U CN201520026370U CN204438584U CN 204438584 U CN204438584 U CN 204438584U CN 201520026370 U CN201520026370 U CN 201520026370U CN 204438584 U CN204438584 U CN 204438584U
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China
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valve
heat exchanger
pipeline
throttle
compressing
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CN201520026370.2U
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刘雄
杨艳芳
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刘雄
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Abstract

The utility model discloses a kind of operation of air conditioning systems, comprise the first compressing mechanism, the second compressing mechanism, the first cross valve, the second cross valve, First Heat Exchanger, the second heat exchanger, the 3rd heat exchanger, first throttle mechanism, second throttle body, the 3rd throttle mechanism; The high voltage nodes of described second cross valve is connected with the low pressure node of described second cross valve by the 62 pipeline, the first compressing mechanism port of export, the first compressing mechanism arrival end, the 63 pipeline successively, and the second commutation node of described second cross valve is connected by the 67 pipeline, the 3rd heat exchanger, the 3rd throttle mechanism, the 58 pipeline, first throttle mechanism, First Heat Exchanger, the 64 pipeline and second of the described first cross valve node that commutates successively.Structure is simple, and reliable operation, with low cost, summer can according to the needs production high/low temperature simultaneously air conditioning water of user, and winter, the oil return of each compressing mechanism was simple and reliable for the production of air conditioning hot.

Description

Operation of air conditioning systems
Technical field
The utility model relates to a kind of operation of air conditioning systems, belongs to refrigeration technology field.
Background technology
Along with expanding economy, civilian with in the air-conditioning system of industrial building, air conditioner cold and hot water unit obtains a large amount of uses, current this unit in summer only can produce the chilled water of single water temperature, be generally 7 DEG C/12 DEG C, be commonly called as " cryogenic freezing water ", winter is for the production of air conditioning hot; Its basic composition comprises compressor, cross valve, user side heat exchanger, heat source side heat exchanger, throttle mechanism five part.But in recent years along with the raising of building energy-saving standard and indoor environment standard, in the air-conditioning system of many buildings, in order to take away indoor humidity load and thermic load respectively, require have cryogenic freezing water and high temperature chilled water, and air conditioner cold and hot water unit conventional at present cannot meet this requirement simultaneously.
Summary of the invention
The purpose of this utility model is to provide one and is at least made up of two compressor structures, has high and low temperature two evaporating temperature summer, can cool new wind according to need production high and low temperature chilled water or the classification of user; Winter can be used for heat supply again, and the operation of air conditioning systems that the oil return of each compressor structure is simple and reliable.
In order to overcome above-mentioned technology Problems existing, the technical scheme of the utility model technical solution problem is:
A kind of operation of air conditioning systems, comprise the first compressing mechanism (1), the second cross valve (80), the second heat exchanger (4), the 3rd heat exchanger (8), the 3rd throttle mechanism (7), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the first cross valve (70), First Heat Exchanger (3), first throttle mechanism (5), second throttle body (6), the high voltage nodes (81) of described second cross valve (80) is successively by the 62 pipeline (62), first compressing mechanism (1) port of export, first compressing mechanism (1) arrival end, 63 pipeline (63) is connected with the low pressure node (83) of described second cross valve (80), second commutation node (84) of described second cross valve (80) is successively by the 67 pipeline (67), 3rd heat exchanger (8), 3rd throttle mechanism (7), 58 pipeline (58), first throttle mechanism (5), First Heat Exchanger (3), 64 pipeline (64) and second of described first cross valve (70) node (74) that commutates is connected, first commutation node (82) of described second cross valve (80) is connected by the 51 pipeline (51) and first of described first cross valve (70) node (72) that commutates, the high voltage nodes (71) of described first cross valve (70) is successively by the 60 pipeline (60), second compressing mechanism (2) port of export, second compressing mechanism (2) arrival end, 68 pipeline (68) is connected with the low pressure node (73) of described first cross valve (70), one end of described second heat exchanger (4) is successively by second throttle body (6), 52 pipeline (52) is connected with the 58 pipeline (58) between described first throttle mechanism (5) and the 3rd throttle mechanism (7), the other end of described second heat exchanger (4) is connected with the 51 pipeline (51) by the 61 pipeline (61).
Compared with prior art, its beneficial effect is the utility model:
1. when summer operation, have the two evaporating temperature of high/low temperature, can cool new wind according to need production high and low temperature chilled water or the classification of user, winter can be used for heat supply again;
2., in the course of work, the oil return of each compressor structure is simple and reliable;
3. overall structure is simple;
4. the utility model is applicable to industry and civilian operation of air conditioning systems, is specially adapted to the occasion requiring humiture to control respectively.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the utility model embodiment 2 structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model content is described in further detail.
Embodiment 1
As shown in Figure 1, the present embodiment is that one has the two evaporating temperature of high/low temperature, cooling new wind, can be used for again the operation of air conditioning systems of heat supply winter, for there being the occasion of cold heat demand the whole year according to need production high and low temperature chilled water or the classification of user.Whole equipment comprises following part: the first compressing mechanism 1, second compressing mechanism 2, first cross valve 70, second cross valve 80, first throttle mechanism 5, second throttle body 6, the 3rd throttle mechanism 7, First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8.First throttle mechanism 5, second throttle body 6, the 3rd throttle mechanism 7 are all electric expansion valve.
During work, First Heat Exchanger 3, the 3rd heat exchanger 8 are all user side heat exchangers, summer as evaporimeter, for user produces air conditioning water, winter as condenser, for user produces air conditioning hot; Second heat exchanger 4 is heat source side heat exchangers, and summer, for distributing the condensation heat that refrigeration produces to environment, winter, as evaporimeter, absorbed heat from environment (such as: outdoor air, surface water, underground water or soil) as condenser.
Workflow under each function is as described below respectively.
(1) cooling in summer function
(1) scheme one: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; First Heat Exchanger 3, second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work.
Under this scheme, First Heat Exchanger 3 is for being user's refrigeration; The condensation heat that second heat exchanger 4 produces for discharge refrigeration in environment.
During work, first throttle mechanism 5 normally works, second throttle body 6 standard-sized sheet, and the 3rd throttle mechanism 7 cuts out.First cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: after cold-producing medium is discharged from second compressing mechanism 2 port of export, successively through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 first commutation node 72, 51 pipeline 51, 61 pipeline 61, second heat exchanger 4, second throttle body 6, 52 pipeline 52, 58 pipeline 58, first throttle mechanism 5, First Heat Exchanger 3, 64 pipeline 64, first cross valve 70 second commutation node 74, first cross valve 70 low pressure node 73, 68 pipeline 68, get back to the second compressing mechanism 2 arrival end, enter the second compressing mechanism 2 to be compressed, complete and once circulate.
(2) scheme two: the first compressing mechanism 1 normally works, and the second compressing mechanism 2 does not work; First Heat Exchanger 3 does not work, and the second heat exchanger 4, the 3rd heat exchanger 8 normally work.
Under this scheme, the 3rd heat exchanger 8 is for being user's refrigeration; The condensation heat that second heat exchanger 4 produces for discharge refrigeration in environment.
During work, first throttle mechanism 5 closes, second throttle body 6 standard-sized sheet, and the 3rd throttle mechanism 7 normally works.First cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: after cold-producing medium is discharged from first compressing mechanism 1 port of export, successively through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 first commutation node 82, 51 pipeline 51, 61 pipeline 61, second heat exchanger 4, second throttle body 6, 52 pipeline 52, 58 pipeline 58, 3rd throttle mechanism 7, 3rd heat exchanger 8, 67 pipeline 67, second cross valve 80 second commutation node 84, second cross valve 80 low pressure node 83, 63 pipeline 63, get back to the first compressing mechanism 1 arrival end, enter the first compressing mechanism 1 to be compressed, complete and once circulate.
(3) scheme three: the first compressing mechanism 1, second compressing mechanism 2 all normally works; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 also all normally work.
Under this scheme, First Heat Exchanger 3 and the 3rd heat exchanger 8 are user's refrigeration under same evaporating temperature; The condensation heat that second heat exchanger 4 produces for discharge refrigeration in environment.
During work, first throttle mechanism 5, the 3rd throttle mechanism 7 all normally work, second throttle body 6 standard-sized sheet.First cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: the refrigerant liquid entering the 58 pipeline 58 is divided into two-way; The first via through the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 second commutation node 84, second cross valve 80 low pressure node the 83, the 63 pipeline 63, first compressing mechanism 1 arrival end, first compressing mechanism 1 port of export, the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 first commutation node 82, enters the 51 pipeline 51 successively; Second tunnel through first throttle mechanism 5, First Heat Exchanger the 3, the 64 pipeline 64, first cross valve 70 second commutation node 74, first cross valve 70 low pressure node the 73, the 68 pipeline 68, second compressing mechanism 2 arrival end, second compressing mechanism 2 port of export, the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 first commutation node 72, also enters the 51 pipeline 51 successively; Two-way, after the 51 pipeline 51 mixes, successively through the 61 pipeline, the second heat exchanger 4, second throttle body the 6, the 52 pipeline 52, enters the 58 pipeline 58 and is divided into two-way, complete and once circulate.
(4) scheme four: the first compressing mechanism 1, second compressing mechanism 2 all normally works; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 also all normally work.
Under this scheme, First Heat Exchanger 3 and the 3rd heat exchanger 8 work under different evaporating temperatures, and First Heat Exchanger 3 is for the production of high temperature chilled water, and the 3rd heat exchanger 8 is for the production of cryogenic freezing water; The condensation heat that second heat exchanger 4 produces for discharge refrigeration in environment.
During work, first throttle mechanism 5, the 3rd throttle mechanism 7 all normally work, second throttle body 6 standard-sized sheet.First cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is identical with scheme three.Unlike: 1) in the course of work, refrigerant liquid throttling is become the gas-fluid two-phase mixture of intermediate pressure by first throttle mechanism 5, high temperature chilled water is produced again by First Heat Exchanger 3, during work, the second compressing mechanism 2 is controlled by the outlet water temperature of method to high temperature chilled water changing Ya Zong mechanism output capacity; When the second compressing mechanism 2 is frequency-changeable compressors, the second compressing mechanism 2 is that the outlet water temperature of method to high temperature chilled water by changing compressor electric motor operating frequency controls.2) in the course of work, refrigerant liquid throttling is become the gas-fluid two-phase mixture of low pressure by the 3rd throttle mechanism 7, again by the 3rd heat exchanger 8 production cryogenic freezing water, during work, the first compressing mechanism 1 is controlled by the outlet water temperature of method to cryogenic freezing water changing Ya Zong mechanism output capacity; When the first compressing mechanism 1 is frequency-changeable compressor, the first compressing mechanism 1 is that the outlet water temperature of method to cryogenic freezing water by changing compressor electric motor operating frequency controls.
(5) scheme five: the first compressing mechanism 1, second compressing mechanism 2 all normally works; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 also all normally work.
Under this scheme, First Heat Exchanger 3 and the 3rd heat exchanger 8 work under different evaporating temperatures, and First Heat Exchanger 3 is for the production of cryogenic freezing water, and the 3rd heat exchanger 8 is for the production of high temperature chilled water; The condensation heat that second heat exchanger 4 produces for discharge refrigeration in environment.
During work, first throttle mechanism 5, the 3rd throttle mechanism 7 all normally work, second throttle body 6 standard-sized sheet.First cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is identical with scheme three.Unlike: 1) in the course of work, refrigerant liquid throttling is become the gas-fluid two-phase mixture of low pressure by first throttle mechanism 5, again by First Heat Exchanger 3 production cryogenic freezing water, during work, the second compressing mechanism 2 is controlled by the outlet water temperature of method to cryogenic freezing water changing Ya Zong mechanism output capacity; When the second compressing mechanism 2 is frequency-changeable compressors, the second compressing mechanism 2 is that the outlet water temperature of method to cryogenic freezing water by changing compressor electric motor operating frequency controls.2) in the course of work, refrigerant liquid throttling is become the gas-fluid two-phase mixture of intermediate pressure by the 3rd throttle mechanism 7, high temperature chilled water is produced again by the 3rd heat exchanger 8, during work, the first compressing mechanism 1 is controlled by the outlet water temperature of method to high temperature chilled water changing Ya Zong mechanism output capacity; When the first compressing mechanism 1 is frequency-changeable compressor, the first compressing mechanism 1 is that the outlet water temperature of method to high temperature chilled water by changing compressor electric motor operating frequency controls.
(2) winter heating's function
(1) scheme one: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; First Heat Exchanger 3, second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work.
Under this scheme, First Heat Exchanger 3 is for being user's heat supply; Second heat exchanger 4 is for draw heat from environment.
During work, first throttle mechanism 5 standard-sized sheet, second throttle body 6 normally works, and the 3rd throttle mechanism 7 cuts out.First cross valve 70 high voltage nodes 71 and the first cross valve 70 second node 74 that commutates communicates, and the first cross valve 70 first node 72 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: after cold-producing medium is discharged from second compressing mechanism 2 port of export, successively through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 second commutation node 74, 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5, 58 pipeline 58, 52 pipeline 52, second throttle body 6, second heat exchanger 4, 61 pipeline 61, 51 pipeline 51, first cross valve 70 first commutation node 72, first cross valve 70 low pressure node 73, 68 pipeline 68, get back to the second compressing mechanism 2 arrival end, enter the second compressing mechanism 2 to be compressed, complete and once circulate.
(2) scheme two: the first compressing mechanism 1 normally works, and the second compressing mechanism 2 does not work; First Heat Exchanger 3 does not work, and the second heat exchanger 4, the 3rd heat exchanger 8 normally work.
Under this scheme, the 3rd heat exchanger 8 is for being user's heat supply; Second heat exchanger 4 is for draw heat from environment.
During work, first throttle mechanism 5 closes, and second throttle body 6 normally works, the 3rd throttle mechanism 7 standard-sized sheet.First cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 second node 84 that commutates communicates, and the second cross valve 80 first node 82 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: after cold-producing medium is discharged from first compressing mechanism 1 port of export, successively through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 second commutation node 84, 67 pipeline 67, 3rd heat exchanger 8, 3rd throttle mechanism 7, 58 pipeline 58, 52 pipeline 52, second throttle body 6, second heat exchanger 4, 61 pipeline 61, 51 pipeline 51, second cross valve 80 first commutation node 82, second cross valve 80 low pressure node 83, 63 pipeline 63, get back to the first compressing mechanism 1 arrival end, enter the first compressing mechanism 1 to be compressed, complete and once circulate.
(3) scheme three: the first compressing mechanism 1, second compressing mechanism 2 all normally works; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 also all normally work.
Under this scheme, First Heat Exchanger 3 and the 3rd heat exchanger 8 are user's heat supply; Second heat exchanger 4 is for draw heat from environment.
During work, first throttle mechanism 5, the 3rd throttle mechanism 7 all standard-sized sheets, second throttle body 6 normally works.First cross valve 70 high voltage nodes 71 and the first cross valve 70 second node 74 that commutates communicates, and the first cross valve 70 first node 72 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 second node 84 that commutates communicates, and the second cross valve 80 first node 82 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: the low pressure refrigerant gas entering the 51 pipeline 51 is divided into two-way; The first via through the second cross valve 80 first commutation node 82, second cross valve 80 low pressure node the 83, the 63 pipeline 63, first compressing mechanism 1 arrival end, first compressing mechanism 1 port of export, the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 second commutation node the 84, the 67 pipeline 67, the 3rd heat exchanger 8, the 3rd throttle mechanism 7, enters the 58 pipeline 58 successively; Second tunnel through the first cross valve 70 first commutation node 72, first cross valve 70 low pressure node the 73, the 68 pipeline 68, second compressing mechanism 2 arrival end, second compressing mechanism 2 port of export, the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 second commutation node the 74, the 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5, also enters the 58 pipeline 58 successively; Two-way, after the 58 pipeline 58 mixes, successively through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, enters the 51 pipeline 51 and is divided into two-way, complete and once circulate.
(3) winter defrosting function
(1) utilize the 3rd heat exchanger 8 from user's heat absorption defrost
In this kind of defrosting situation, the first compressing mechanism 1 normally works, and the second compressing mechanism 2 does not work; First Heat Exchanger 3 does not work, and the second heat exchanger 4, the 3rd heat exchanger 8 normally work.
In this kind of defrosting situation, the 3rd heat exchanger 8 draw heat from user, the heat drawn, for the defrost of the second heat exchanger 4.
During work, first throttle mechanism 5 closes, and second throttle body 6 standard-sized sheet, the 3rd throttle mechanism 7 normally work.
During work, the first cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: after cold-producing medium is discharged from first compressing mechanism 1 port of export, successively through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 first commutation node 82, 51 pipeline 51, 61 pipeline 61, second heat exchanger 4, second throttle body 6, 52 pipeline 52, 58 pipeline 58, 3rd throttle mechanism 7, 3rd heat exchanger 8, 67 pipeline 67, second cross valve 80 second commutation node 84, second cross valve 80 low pressure node 83, 63 pipeline 63, get back to the first compressing mechanism 1 arrival end, enter the first compressing mechanism 1 to be compressed, complete and once circulate.
(2) utilize First Heat Exchanger 3 from user's heat absorption defrost
In this kind of defrosting situation, the second compressing mechanism 2 normally works, and the first compressing mechanism 1 does not work; First Heat Exchanger 3, second heat exchanger 4 normally works, and the 3rd heat exchanger 8 does not work.
In this kind of defrosting situation, First Heat Exchanger 3 is from user's draw heat, and the heat drawn, for the defrost of the second heat exchanger 4.
During work, first throttle mechanism 5 normally works, second throttle body 6 standard-sized sheet, and the 3rd throttle mechanism 7 cuts out.
During work, the first cross valve 70 high voltage nodes 71 and the first cross valve 70 first node 72 that commutates communicates, and the first cross valve 70 second node 74 that commutates communicates with the first cross valve 70 low pressure node 73.Second cross valve 80 high voltage nodes 81 and the second cross valve 80 first node 82 that commutates communicates, and the second cross valve 80 second node 84 that commutates communicates with the second cross valve 80 low pressure node 83.
Its workflow is: after cold-producing medium is discharged from second compressing mechanism 2 port of export, successively through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 first commutation node 72, 51 pipeline 51, 61 pipeline 61, second heat exchanger 4, second throttle body 6, 52 pipeline 52, 58 pipeline 58, first throttle mechanism 5, First Heat Exchanger 3, 64 pipeline 64, first cross valve 70 second commutation node 74, first cross valve 70 low pressure node 73, 68 pipeline 68, get back to the second compressing mechanism 2 arrival end, enter the second compressing mechanism 2 to be compressed, complete and once circulate.
From the above-described course of work of scheme shown in Fig. 1: during summer operation, after the lubricating oil entering the second heat exchanger 4 along with two compressor structures exhausts enters refrigerant liquid, return two compressor structures respectively via First Heat Exchanger 3, the 3rd heat exchanger 8 respectively along with refrigerant liquid respectively again; The capacity of compressing mechanism is large, and the refrigerant flow returning compressing mechanism via heat exchanger is also larger, corresponding adjoint that lubricants capacity also can be more.Winter is when working, First Heat Exchanger 3 is entered respectively, after the lubricating oil of the 3rd heat exchanger 8 enters refrigerant liquid along with compressing mechanism exhaust, again along with refrigerant liquid by after second throttle body 6 throttling, return two compressor structures respectively via the second heat exchanger 4; The capacity of compressing mechanism is large, and its inspiratory capacity is also large, corresponding adjoint that lubricants capacity also can be more.In addition, oil eliminator can be set respectively at the port of export of two compressor structures, also return line can be set respectively at the entrance end of two compressor structures, therefore can ensure that the lubricating oil entering refrigerant system along with the exhaust of two compressor structures respectively returns again every compressor structure, therefore the oil return of compressing mechanism is simple and reliable.
Embodiment 2
As shown in Figure 2, the present embodiment is also that one has the two evaporating temperature of high/low temperature, cooling new wind, can be used for again the operation of air conditioning systems of heat supply winter, for there being the occasion of cold heat demand the whole year according to need production high and low temperature chilled water or the classification of user.Scheme shown in Fig. 2 is the further improvement to scheme shown in Fig. 1.
In operation of air conditioning systems shown in Fig. 1 in practical work process, in order to avoid back flow of refrigerant enters compressing mechanism, a check valve can be set respectively at the exhaust outlet of the first compressing mechanism 1, second compressing mechanism 2, as shown in Figure 2; Now, the connected mode of the first check valve 21, second check valve 22 in scheme shown in Fig. 2 is: the first check valve 21 arrival end is connected with first compressing mechanism 1 port of export, and first check valve 21 port of export is connected with the 62 pipeline 62.Second check valve 22 arrival end is connected with second compressing mechanism 2 port of export, and second check valve 22 port of export is connected with the 60 pipeline 60.
Scheme shown in Fig. 2 also can realize all functions of scheme shown in Fig. 1.Scheme shown in the present embodiment Fig. 2 is also applicable to scheme described in all embodiments of the present utility model.
Embodiment 3
For scheme shown in embodiment 1 Fig. 1, by adding a liquid reservoir 50 in systems in which, can be improved further.Now, liquid reservoir 50 connected mode is in systems in which: on the 58 pipeline 58, be provided with a liquid reservoir 50, and first throttle mechanism 5 one end is connected with First Heat Exchanger 3, and first throttle mechanism 5 other end is connected with liquid reservoir 50 by the 58 pipeline 58; 3rd throttle mechanism 7 one end is connected with the 3rd heat exchanger 8, and the 3rd throttle mechanism 7 other end is also connected with liquid reservoir 50 by the 58 pipeline 58; Second throttle body 6 one end is connected with the second heat exchanger 4, and second throttle body 6 other end is connected with liquid reservoir the 50 or the 58 pipeline 58 by the 52 pipeline 52.The method of attachment in systems in which of the above-described liquid reservoir 50 of the present embodiment, is also applicable to scheme described in all embodiments of the present utility model.
In the scheme of the above-mentioned all embodiments of the utility model, any one check valve in described first check valve 21, second check valve 22 can both adopt magnetic valve, any one in have the throttle mechanism of turn-off function (such as: electric expansion valve) or flow control device substitutes.
In the scheme of the above-mentioned all embodiments of the utility model, the while of any one or two in first compressing mechanism 1, second compressing mechanism 2, can adopt in following compressor any one: screw compressor, helical-lobe compressor, rolling rotor compressor, sliding-vane compressor, rotary blade type compressor, centrifugal compressor, digital scroll compressor; The while of any one or two in first compressing mechanism 1, second compressing mechanism 2, also can be variable conpacitance compressor (such as: frequency-changeable compressor, digital scroll compressor), or constant speed compressor.In the scheme of the above-mentioned all embodiments of the utility model, the compressor bank that the first compressing mechanism 1, second compressing mechanism 2 can also be made up of at least two variable conpacitance compressors, or the compressor bank be made up of at least two constant speed compressors; In addition, the first compressing mechanism 1, second compressing mechanism 2 compressor bank that also can be made up of at least one variable conpacitance compressor and at least one constant speed compressor.
In the scheme of the above-mentioned all embodiments of the utility model, any one in First Heat Exchanger 3, second heat exchanger 4 or the 3rd heat exchanger 8, except can being refrigerant-air heat exchanger, also can be the heat exchanger of cold-producing medium-water-to-water heat exchanger or other kind; During as cold-producing medium-water-to-water heat exchanger, can adopt in volumetric heat exchanger, plate type heat exchanger, shell and tube exchanger or double pipe heat exchanger any one.When any one in First Heat Exchanger 3, second heat exchanger 4 or the 3rd heat exchanger 8 is as refrigerant-air heat exchanger, usual employing finned heat exchanger, the fin of described finned heat exchanger is generally aluminum or aluminum alloy material, and the occasion special at some also uses copper material.
In the scheme of the above-mentioned all embodiments of the utility model, in first throttle mechanism 5, second throttle body 6, the 3rd throttle mechanism 7 one, even all throttle mechanisms can both adopt the throttle mechanism (such as: electric expansion valve) with turn-off function substitute.
In the scheme of the above-mentioned all embodiments of the utility model, described all pipelines are all copper pipes.

Claims (7)

1. an operation of air conditioning systems, comprise the first compressing mechanism (1), the second cross valve (80), the second heat exchanger (4), the 3rd heat exchanger (8), the 3rd throttle mechanism (7), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the first cross valve (70), First Heat Exchanger (3), first throttle mechanism (5), second throttle body (6), the high voltage nodes (81) of described second cross valve (80) is successively by the 62 pipeline (62), first compressing mechanism (1) port of export, first compressing mechanism (1) arrival end, 63 pipeline (63) is connected with the low pressure node (83) of described second cross valve (80), second commutation node (84) of described second cross valve (80) is successively by the 67 pipeline (67), 3rd heat exchanger (8), 3rd throttle mechanism (7), 58 pipeline (58), first throttle mechanism (5), First Heat Exchanger (3), 64 pipeline (64) and second of described first cross valve (70) node (74) that commutates is connected, first commutation node (82) of described second cross valve (80) is connected by the 51 pipeline (51) and first of described first cross valve (70) node (72) that commutates, the high voltage nodes (71) of described first cross valve (70) is successively by the 60 pipeline (60), second compressing mechanism (2) port of export, second compressing mechanism (2) arrival end, 68 pipeline (68) is connected with the low pressure node (73) of described first cross valve (70), one end of described second heat exchanger (4) is successively by second throttle body (6), 52 pipeline (52) is connected with the 58 pipeline (58) between described first throttle mechanism (5) and the 3rd throttle mechanism (7), the other end of described second heat exchanger (4) is connected with the 51 pipeline (51) by the 61 pipeline (61).
2. operation of air conditioning systems according to claim 1, any one that it is characterized in that in described first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7) is electric expansion valve.
3. operation of air conditioning systems according to claim 1, it is characterized in that one first check valve (21) arrival end is connected with described first compressing mechanism (1) port of export, described first check valve (21) port of export is connected with the 62 pipeline (62).
4. operation of air conditioning systems according to claim 1, it is characterized in that one second check valve (22) arrival end is connected with described second compressing mechanism (2) port of export, described second check valve (22) port of export is connected with the 60 pipeline (60).
5. operation of air conditioning systems according to claim 1, it is characterized in that being provided with a liquid reservoir (50) on the 58 pipeline (58), described first throttle mechanism (5) one end is connected with First Heat Exchanger (3), and described first throttle mechanism (5) other end is connected with described liquid reservoir (50) by the 58 pipeline (58); Described 3rd throttle mechanism (7) one end is connected with the 3rd heat exchanger (8), and described 3rd throttle mechanism (7) other end is also connected with described liquid reservoir (50) by the 58 pipeline (58); Described second throttle body (6) one end is connected with the second heat exchanger (4), and described second throttle body (6) other end is connected with liquid reservoir (50) or the 58 pipeline (58) by the 52 pipeline (52).
6. operation of air conditioning systems according to claim 1, any one that it is characterized in that in described the first compressing mechanism (1), the second compressing mechanism (2) is variable conpacitance compressor structure.
7. operation of air conditioning systems according to claim 6, is characterized in that described variable conpacitance compressor structure is frequency-changeable compressor.
CN201520026370.2U 2015-01-07 2015-01-07 Operation of air conditioning systems Expired - Fee Related CN204438584U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534708A (en) * 2015-01-07 2015-04-22 刘雄 Air conditioner refrigeration device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534708A (en) * 2015-01-07 2015-04-22 刘雄 Air conditioner refrigeration device

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