CN103471276B - A kind of air injection enthalpy-increasing type aircondition - Google Patents
A kind of air injection enthalpy-increasing type aircondition Download PDFInfo
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- CN103471276B CN103471276B CN201310450566.XA CN201310450566A CN103471276B CN 103471276 B CN103471276 B CN 103471276B CN 201310450566 A CN201310450566 A CN 201310450566A CN 103471276 B CN103471276 B CN 103471276B
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Abstract
The invention discloses a kind of air injection enthalpy-increasing type aircondition, comprise the refrigeration cycle that connected to form by compressor, cross valve, condenser, evaporimeter, gas-liquid separator, economizer, reservoir and first throttle valve, second throttle, the first check valve, the second check valve, the 3rd check valve and the 4th check valve and heat closed circuit; In air injection enthalpy-increasing type aircondition provided by the invention, in each closed circuit, only have two choke valves, fewer than choke valve quantity of the prior art, not only simplify pipeline structure, and reduce cost; In addition, by arranging the flow direction of check valve, refrigeration cycle is without reservoir, then refrigerant can not be stored in reservoir, and the cold medium flux in refrigeration cycle does not reduce, than the good refrigeration effect of the refrigeration cycle through reservoir.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of air injection enthalpy-increasing type aircondition.
Background technology
Air injection enthalpy-increasing type aircondition generally comprises cross valve, compressor, condenser, evaporimeter, reservoir, economizer, choke valve, check valve etc.Use economizer, can improve refrigeration and the heating efficiency of aircondition, in order to realize refrigeration, heat in circulation and all can use economizer, existing air injection enthalpy-increasing type aircondition have employed the choke valve of more than three, make the structure of aircondition more complicated, cost is higher; And existing air injection enthalpy-increasing type aircondition is carrying out all using reservoir when freezing and heat, to reach the effect storing refrigerant in pipeline, but, in process of refrigerastion, refrigerant is after reservoir, and a part can be stored in reservoir, thus the flow-rate ratio making to enter the refrigerant carrying out kind of refrigeration cycle in pipeline does not use flow during reservoir little, thus the degree of supercooling of system reduces, refrigerating capacity reduces, and refrigeration is bad.
In sum, how simplifying the structure of air injection enthalpy-increasing type aircondition, reduce costs, meanwhile, improve the refrigeration of aircondition, is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of air injection enthalpy-increasing type aircondition, to simplify the structure of aircondition, reduce costs, improve the refrigeration of aircondition.
For achieving the above object, the invention provides following technical scheme:
A kind of air injection enthalpy-increasing type aircondition, comprises by some or all refrigeration cycles formed in compressor, cross valve, condenser, evaporimeter, gas-liquid separator, economizer and reservoir and heats closed circuit;
Also comprise first throttle valve, second throttle, the first check valve, the second check valve, the 3rd check valve, the 4th check valve;
The import of described first check valve is communicated with described condenser;
The outlet of described 3rd check valve is communicated with described evaporimeter;
The outlet of described 4th check valve and the inlet communication of described first check valve, the import of described 4th check valve and the inlet communication of described 3rd check valve;
The outlet of described second check valve and the outlet of described first check valve;
The two ends of described reservoir respectively with the import of described second check valve and the outlet of described 3rd check valve;
The two ends of described first throttle valve respectively with the described import of the 3rd check valve and the main road outlet of described economizer;
The two ends of described second throttle respectively with the outlet of described first check valve and the bypass inlet communication of described economizer;
The main road import of described economizer and the outlet of described first check valve;
The bypass outlet of described economizer is communicated with the intermediate injection mouth of described compressor.
Preferably, in above-mentioned air injection enthalpy-increasing type aircondition, the main road of described refrigeration cycle passes through successively: the air intake duct of the E port of the main road import of the C port of the blast pipe of compressor, the D port of cross valve, cross valve, condenser, the first check valve, economizer, the main road outlet of economizer, first throttle valve, the 3rd check valve, evaporimeter, cross valve, the S port of cross valve, gas-liquid separator, compressor.
Preferably, in above-mentioned air injection enthalpy-increasing type aircondition, the bypass of kind of refrigeration cycle passes through successively: the C port of the blast pipe of compressor, the D port of cross valve, cross valve, condenser, the first check valve, second throttle, the bypass import of economizer, the bypass outlet of economizer, the intermediate injection mouth of compressor.
Preferably, in above-mentioned air injection enthalpy-increasing type aircondition, the main road heating circulation passes through successively: the air intake duct of the C port of the main road import of the E port of the blast pipe of compressor, the D port of cross valve, cross valve, evaporimeter, reservoir, the second check valve, economizer, the main road outlet of economizer, first throttle valve, the 4th check valve, condenser, cross valve, the S port of cross valve, gas-liquid separator, compressor.
Preferably, in above-mentioned air injection enthalpy-increasing type aircondition, the bypass heating circulation passes through successively: the E port of the blast pipe of compressor, the D port of cross valve, cross valve, evaporimeter, reservoir, the second check valve, second throttle, the bypass import of economizer, the bypass outlet of economizer, the intermediate injection mouth of compressor.
Preferably, in above-mentioned air injection enthalpy-increasing type aircondition, it is characterized in that, described first throttle valve and described second throttle are electric expansion valve or heating power expansion valve.
Compared with prior art, the invention has the beneficial effects as follows:
In air injection enthalpy-increasing type aircondition provided by the invention, compressor, cross valve, condenser, evaporimeter, gas-liquid separator, economizer and reservoir are coupled together by first throttle valve, second throttle and four check valves, composition includes refrigeration cycle and heats the aircondition of closed circuit; Can find out in each closed circuit, to only have two choke valves, fewer than choke valve quantity of the prior art, not only simplify pipeline structure, and reduce cost; In addition, by arranging the flow direction of check valve, refrigeration cycle is without reservoir, then refrigerant can not be stored in reservoir, and the cold medium flux in refrigeration cycle does not reduce, than the good refrigeration effect of the refrigeration cycle through reservoir.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or scheme of the prior art, be briefly described to describing the required accompanying drawing used in embodiment or prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The syndeton schematic diagram of a kind of air injection enthalpy-increasing type aircondition that Fig. 1 provides for the embodiment of the present invention;
The circulation theory figure of the refrigeration cycle of a kind of air injection enthalpy-increasing type aircondition that Fig. 2 provides for the embodiment of the present invention;
The circulation theory figure heating closed circuit of a kind of air injection enthalpy-increasing type aircondition that Fig. 3 provides for the embodiment of the present invention.
In above-mentioned Fig. 1-Fig. 3,1 be compressor, 2 be cross valve, 3 be condenser, 4 be evaporimeter, 5 be gas-liquid separator, 6 be reservoir, 7 be economizer, 8 be first throttle valve, 9 be the 4th check valve for second throttle, 10 be the first check valve, 11 be the second check valve, 12 is the 3rd check valve, 13;
Wherein, the air entry, 103 of 101 to be the exhaust outlet, 102 of compressor be compressors is the intermediate injection mouth of compressor;
701 is the main road import, 702 of economizer is that the main road of economizer exports, the bypass of 703 to be the bypass import, 704 of economizer be economizers exports.
Detailed description of the invention
The invention provides a kind of air injection enthalpy-increasing type aircondition, simplify the structure of air injection enthalpy-increasing type aircondition, reduce cost, meanwhile, improve the refrigeration of aircondition.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of protection of the invention.
Please refer to Fig. 1, the syndeton schematic diagram of a kind of air injection enthalpy-increasing type aircondition that Fig. 1 provides for the embodiment of the present invention; The circulation theory figure of the refrigeration cycle of a kind of air injection enthalpy-increasing type aircondition that Fig. 2 provides for the embodiment of the present invention; The circulation theory figure heating closed circuit of a kind of air injection enthalpy-increasing type aircondition that Fig. 3 provides for the embodiment of the present invention.
Embodiments provide a kind of air injection enthalpy-increasing type aircondition, comprise compressor 1, cross valve 2, condenser 3, evaporimeter 4, gas-liquid separator 5, economizer 7, reservoir 6, first throttle valve 8.Second throttle 9, first check valve 10, second check valve 11, the 3rd check valve 12 and the 4th check valve 13.Some devices are wherein interconnected and are combined to form refrigeration cycle and heat closed circuit, and refrigeration cycle comprises main road and bypass, heats closed circuit and comprises main road and bypass equally.Connection between each device will be introduced below, as shown in Figure 1: the blast pipe 101 of compressor 1 is communicated with the D port of cross valve 2, the two ends of condenser 3 respectively with the C port of cross valve 2 and the inlet communication of the first check valve 10, the two ends of gas-liquid separator 5 are connected with the S port of cross valve 2 and the air intake duct 102 of compressor 1 respectively, the two ends of evaporimeter 4 respectively with the E port of cross valve 2 and the outlet of the 3rd check valve 12, the outlet of the 4th check valve 13 and the inlet communication of the first check valve 10, the import of the 4th check valve 13 and the inlet communication of the 3rd check valve 12, the outlet of the second check valve 11 and the outlet of the first check valve 10, the two ends of reservoir 6 respectively with the import of the second check valve 11 and the outlet of the 3rd check valve 12, the two ends of first throttle valve 8 export 702 with the import of the 3rd check valve 12 with the main road of economizer 7 respectively and are communicated with, the two ends of second throttle 9 are communicated with the bypass import 703 of economizer 7 with the outlet of the first check valve 10 respectively, the main road import 701 of economizer 7 and the outlet of the first check valve 10, the bypass outlet 704 of economizer 7 is communicated with the intermediate injection mouth 103 of compressor 1.
In above-mentioned air injection enthalpy-increasing type aircondition, because the quantity of the choke valve adopted only has first throttle valve 8 and second throttle 9 two, fewer than the quantity of choke valve of the prior art, therefore, simplify the pipeline be connected with choke valve, and the cost of choke valve is higher in the market, reduces the quantity of choke valve, reduce the cost of air injection enthalpy-increasing type aircondition on the whole; And, in refrigeration cycle, by four check valves are arranged in place, and the circulating direction of check valve is set, realize in refrigeration cycle, without reservoir 6, thus, refrigerant in refrigeration cycle can not be reduced, and compared with the refrigeration cycle through reservoir, the refrigeration of refrigeration cycle of the present invention is better.
In the present embodiment, the main road of kind of refrigeration cycle is optimized further, as shown in Figure 2, in figure, arrow points is the loop direction of refrigerant, and the main road of refrigeration cycle is connected with in turn according to loop direction: the air intake duct 102 of the E port of the main road import 701 of the C port of the blast pipe 101 of compressor 1, the D port of cross valve 2, cross valve 2, condenser 3, first check valve 10, economizer 7, the main road outlet 702 of economizer 7, first throttle valve 8, the 3rd check valve 12, evaporimeter 4, cross valve 2, the S port of cross valve 2, gas-liquid separator 5, compressor 1.The operation principle of the main road of refrigeration cycle is: refrigerant is collapsed into high temperature and high pressure gas through compressor 1, condenser 3 is entered through cross valve 2, refrigerant heat release in condenser 3 becomes high-pressure sub-cooled liquid, then the main road of economizer 7 is entered through the first check valve 10, refrigerant in economizer 7 main road is cooled further by the refrigerant in the bypass of economizer 7, degree of supercooling increases, refrigerant becomes low temperature two-phase state through first throttle valve 8 reducing pressure by regulating flow, then enter evaporimeter 4 heat absorption through the 3rd check valve 12 and become low area overheat gas, enter gas-liquid separator 5 through cross valve 2 afterwards and carry out gas-liquid separation, last low-pressure gas gets back to compressor 1, complete the main road circulation of a refrigeration cycle, and continue the circulation of next round main road.
In the present embodiment, the bypass of refrigeration cycle is optimized, as shown in Figure 2, the bypass of refrigeration cycle is connected with in turn according to loop direction: the C port of the blast pipe 101 of compressor 1, the D port of cross valve 2, cross valve 2, condenser 3, first check valve 10, second throttle 9, the bypass import 703 of economizer 7, the bypass outlet 704 of economizer 7, the intermediate injection mouth 103 of compressor 1.The operation principle of the bypass of refrigeration cycle is: refrigerant is collapsed into high temperature and high pressure gas through compressor 1, condenser 3 is entered through cross valve 2, in condenser 3, refrigerant carries out heat release and becomes high-pressure sub-cooled liquid, the second expansion valve 9 reducing pressure by regulating flow is entered through the first check valve 10, refrigerant becomes middle pressure two-phase state, enter in the bypass of economizer 7 afterwards, refrigerant absorbs the heat from the refrigerant in the main road of economizer 7 in the bypass of economizer 7, reach the object of cooling main road refrigerant further, after the bypass of economizer 7, hot gas is pressed through during refrigerant becomes, then get back to compressor 1 from the intermediate injection mouth 103 of compressor 1, complete the bypass circulation of a refrigeration cycle, and continue the circulation of next round bypass.
Can be seen by the main road of above-mentioned refrigeration cycle and bypass, refrigerant without reservoir 6, therefore, refrigerant in kind of refrigeration cycle can not be stored in reservoir 6, maintain flow and the degree of supercooling of the refrigerant in loop, compared with the refrigeration cycle through reservoir, improve refrigeration.
In the present embodiment, be optimized heating closed circuit, as shown in Figure 3, the main road heating closed circuit is connected with in turn according to loop direction: the air intake duct 102 of the C port of the main road import 701 of the E port of the blast pipe 101 of compressor 1, the D port of cross valve 2, cross valve 2, evaporimeter 4, reservoir 6, second check valve 11, economizer 7, the main road outlet 702 of economizer 7, first throttle valve 8, the 4th check valve 13, condenser 3, cross valve 2, the S port of cross valve 2, gas-liquid separator 5, compressor 1.The operation principle heating the main road of closed circuit is: what switch cross valve 2 obtains electricity condition, change the connection situation of each port, refrigerant becomes pressure high temperature hot gas through compressor 1, enter evaporimeter 4 through cross valve 2 to carry out heat release and become high-pressure sub-cooled liquid, enter in the main road of economizer 7 through reservoir 6 and the second check valve 11, refrigerant in main road is cooled further by the refrigerant in economizer 7 bypass, degree of supercooling increases, refrigerant in economizer 7 main road becomes low pressure two-phase state through the first expansion valve 8 reducing pressure by regulating flow, after enter condenser 3 through the 4th check valve 13, refrigerant evaporation endothermic in condenser 3 becomes low area overheat gas, then enter gas-liquid separator 5 through cross valve 2 and carry out gas-liquid separation, last low-pressure gas gets back to compressor 1, complete the main road circulation once heating closed circuit, and continue next circulation.
In the present embodiment, the bypass heating closed circuit is optimized, as shown in Figure 3, the bypass heating closed circuit is connected with in turn according to loop direction: the E port of the blast pipe 101 of compressor 1, the D port of cross valve 2, cross valve 2, evaporimeter 4, reservoir 6, second check valve 11, second throttle 9, the bypass import 703 of economizer 7, the bypass outlet 704 of economizer 7, the intermediate injection mouth 103 of compressor 1.The operation principle heating the bypass of closed circuit is: refrigerant becomes pressure high temperature hot gas through compressor 1, enter evaporimeter 4 through cross valve 2 to carry out heat release and become high-pressure sub-cooled liquid, again through reservoir 6 and the second check valve 11, refrigerant becomes middle pressure two-phase state by the reducing pressure by regulating flow of the second expansion valve 9, enter in the bypass of economizer 7 afterwards, refrigerant absorbs the heat of refrigerant in main road and presses through hot gas in becoming in bypass, then the intermediate injection mouth 103 through compressor 1 is got back in compressor 1, complete the bypass circulation once heating closed circuit, and continue the circulation of next round bypass.
First throttle valve 8 in the present embodiment and second throttle 9 are electric expansion valve or heating power expansion valve, are more preferably electric expansion valve.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. an air injection enthalpy-increasing type aircondition, comprises by some or all refrigeration cycles formed in compressor (1), cross valve (2), condenser (3), evaporimeter (4), gas-liquid separator (5), economizer (7) and reservoir (6) and heats closed circuit;
It is characterized in that, also comprise first throttle valve (8), second throttle (9), the first check valve (10), the second check valve (11), the 3rd check valve (12), the 4th check valve (13);
The import of described first check valve (10) is communicated with described condenser (3);
The outlet of described 3rd check valve (12) is communicated with described evaporimeter (4);
The described outlet of the 4th check valve (13) and the inlet communication of described first check valve (10), the import of described 4th check valve (13) and the inlet communication of described 3rd check valve (12);
The outlet of described second check valve (11) and the outlet of described first check valve (10);
The two ends of described reservoir (6) respectively with the import of described second check valve (11) and the outlet of described 3rd check valve (12);
The two ends of described first throttle valve (8) export (702) with the import of described 3rd check valve (12) with the main road of described economizer (7) respectively and are communicated with;
The two ends of described second throttle (9) are communicated with the bypass import (703) of described economizer (7) with the outlet of described first check valve (10) respectively;
The main road import (701) of described economizer (7) and the outlet of described first check valve (10);
Bypass outlet (704) of described economizer (7) is communicated with the intermediate injection mouth (103) of described compressor (1).
2. air injection enthalpy-increasing type aircondition according to claim 1, it is characterized in that, the main road of described refrigeration cycle passes through successively: the blast pipe (101) of compressor (1), the D port of cross valve (2), the C port of cross valve (2), condenser (3), first check valve (10), the main road import (701) of economizer (7), main road outlet (702) of economizer (7), first throttle valve (8), 3rd check valve (12), evaporimeter (4), the E port of cross valve (2), the S port of cross valve (2), gas-liquid separator (5), the air intake duct (102) of compressor (1).
3. air injection enthalpy-increasing type aircondition according to claim 1, it is characterized in that, the bypass of kind of refrigeration cycle passes through successively: the C port of the blast pipe (101) of compressor (1), the D port of cross valve (2), cross valve (2), condenser (3), the first check valve (10), second throttle (9), the bypass import (703) of economizer (7), bypass outlet (704) of economizer (7), the intermediate injection mouth (103) of compressor (1).
4. air injection enthalpy-increasing type aircondition according to claim 1, it is characterized in that, the main road heating circulation passes through successively: the blast pipe (101) of compressor (1), the D port of cross valve (2), the E port of cross valve (2), evaporimeter (4), reservoir (6), second check valve (11), the main road import (701) of economizer (7), main road outlet (702) of economizer (7), first throttle valve (8), 4th check valve (13), condenser (3), the C port of cross valve (2), the S port of cross valve (2), gas-liquid separator (5), the air intake duct (102) of compressor (1).
5. air injection enthalpy-increasing type aircondition according to claim 1, it is characterized in that, the bypass heating circulation passes through successively: the E port of the blast pipe (101) of compressor (1), the D port of cross valve (2), cross valve (2), evaporimeter (4), reservoir (6), the second check valve (11), second throttle (9), the bypass import (703) of economizer (7), bypass outlet (704) of economizer (7), the intermediate injection mouth (103) of compressor (1).
6. the air injection enthalpy-increasing type aircondition according to any one of claim 1-5, is characterized in that, described first throttle valve (8) and described second throttle (9) are electric expansion valve or heating power expansion valve.
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| CN104296413A (en) * | 2014-09-24 | 2015-01-21 | 广东欧科空调制冷有限公司 | Variable frequency low-temperature strong heat air conditioner system |
| CN104613665A (en) * | 2015-02-02 | 2015-05-13 | 珠海格力电器股份有限公司 | Heat pump air conditioner system |
| CN106152588A (en) * | 2015-04-21 | 2016-11-23 | 珠海格力电器股份有限公司 | Low-temp. spraying enthalpy unit |
| CN105222401A (en) * | 2015-10-12 | 2016-01-06 | 珠海格力电器股份有限公司 | Coolant circulating system and there is its heat-pump apparatus |
| CN106763909B (en) * | 2017-01-21 | 2023-04-18 | 佛山市德天电器有限公司 | Three-hole one-way valve and frostless heat pump system with three-hole one-way valve |
| CN107842486B (en) * | 2017-11-24 | 2024-01-26 | 安徽美芝精密制造有限公司 | Compressor and air conditioning system with same |
| CN109386909B (en) * | 2018-10-22 | 2020-10-16 | 广东美的暖通设备有限公司 | Outdoor unit, oil return control method and air conditioner |
| CN110160183A (en) * | 2019-05-31 | 2019-08-23 | 天普新能源科技有限公司 | Gas-supplying enthalpy-increasing air source heat pump |
| CN110425176B (en) * | 2019-07-30 | 2020-10-02 | 青岛科技大学 | Gas bearing supported centrifugal compressor gas supply system |
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| CN201885478U (en) * | 2010-12-20 | 2011-06-29 | 天津柯瑞斯空调设备有限公司 | Low temperature type air source heat pump unit |
| CN202304061U (en) * | 2011-10-20 | 2012-07-04 | 宁波奥克斯空调有限公司 | Air-source heat pump air conditioner with enhanced vapour injection (EVI) |
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| CN202928190U (en) * | 2012-11-20 | 2013-05-08 | 江苏瀚艺商用空调有限公司 | Enhanced vapor injection type air-conditioning unit |
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| CN203586601U (en) * | 2013-09-27 | 2014-05-07 | 深圳麦克维尔空调有限公司 | Enhanced-vapour-injection type air-conditioning device |
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