CN203203289U - Air conditioner - Google Patents

Abstract

The utility model provides an air conditioner, which comprises a compressor, a main circuit circulation and an auxiliary circuit circulation, wherein the main circuit circulation and the auxiliary circuit circulation are connected with the compressor; the main circuit cycle also comprises a condenser, an evaporator and an air supplementing device which is connected between the condenser and the evaporator and used for supplementing air to the compressor; the bypass circuit also includes a bypass condenser for supplying heat to the refrigerant entering the air make-up device and a bypass evaporator for cooling the refrigerant entering the evaporator. The utility model discloses because the compressor has three compression chamber, first and second compression chamber setting is in main road circulation, and the third compression chamber is established ties in auxiliary road circulation, and the compressor during operation compresses the refrigerant in main road circulation and the auxiliary road circulation simultaneously to reduce a compressor, and then the complexity of reduce cost, volume and control.

Description

Air-conditioner

Technical field

The utility model relates to field of air conditioning, in particular to a kind of air-conditioner.

Background technology

The air source heat pump heating capacity descends rapidly decay with outdoor environment temperature and can't meet consumers' demand.Tonifying Qi increases the enthalpy technology in the middle of existing employing twin-stage or the accurate two-stage compression, comprises the middle not exclusively cooling of two-stage throttling and the middle not exclusively cool cycles of one-level throttling, with raising low-temperature heating capacity and COP, reduces simultaneously compressor exhaust temperature.But it is not high that the prior art tonifying Qi increases the enthalpy ratio, causes tonifying Qi to increase enthalpy to improving the DeGrain of coefficient of performance in heating; When the Cold Winter outdoor environment temperature was very low, heating capacity still can't meet the demands.

Utilize machinery to cross ability, Energy Efficiency Ratio and the coefficient of performance that cold circulation can significantly improve air-conditioning or source pump, can cancel indoor auxiliary electric heater unit simultaneously.Machinery is crossed cold circulation need to be in bypass circulation of the basis of main road circulation coupling, but the general twin-tub series connection of adopting the series connection of two compressors or single compressor of existing Two-stage Compression, needing increases a bypass recycle compressor, has increased the complexity of cost, volume and control.

The utility model content

The utility model aims to provide a kind ofly to be controlled simple and can the Effective Raise heating capacity and the air-conditioner of heating performance.

The utility model provides a kind of air-conditioner, comprise compressor and the main road circulation that is connected with compressor and bypass circulation, compressor comprises the first compression chamber, the second compression chamber and the 3rd compression chamber, the first compression chamber and the second compression chamber are arranged in the main road circulation, and the 3rd compression chamber is connected in the bypass circulation; Main road circulation also comprise condenser, evaporimeter and be connected to condenser and evaporimeter between with the making-up air device to the compressor tonifying Qi; Bypass circulation also comprises to the bypass condenser of the cold-producing medium heat supply that enters making-up air device with to the bypass evaporimeter of the cold-producing medium refrigeration that enters evaporimeter.

Further, compressor is two-spool compressor, comprises the first cylinder and the second cylinder, and wherein, the first cylinder has the first compression chamber, is provided with the first slide plate and the second slide plate in the second cylinder so that the second cylinder is divided into the second compression chamber and the 3rd compression chamber; The first air entry and the first row gas port that is communicated with the second compression chamber is set on the second cylinder, and the second air entry that is communicated with the 3rd compression chamber and second row gas port, the second compression chamber is connected with the first compression chamber by the first air entry and is arranged in the main road circulation, and the 3rd compression chamber is connected in the bypass circulation by the second air entry and second row gas port.

Further, the angle between the first slide plate and the second slide plate is α, wherein, and 85 °≤α≤135 °.

Further, compressor is three-rotor compressor, comprises the first cylinder, the second cylinder and the 3rd cylinder, and wherein, the first cylinder has the first compression chamber, and the second cylinder has the second compression chamber, and the 3rd cylinder has the 3rd compression chamber; The first compression chamber and the second cylinder are mutually connected and are arranged in the main road circulation, and the 3rd compression chamber is connected in the bypass circulation.

Further, the capacity of the first compression chamber is VA, and the capacity of the second compression chamber is VB, and the capacity of the 3rd compression chamber is VC, wherein, and 1.0≤VA/VB≤1.35,0.1≤VC/VB≤0.4.

Further, the bypass condenser comprises that bypass condensation chamber and the main road of mutual isolation and heat exchange heat the chamber; The bypass evaporimeter comprises bypass evaporation cavity and the main road refrigerating chamber of mutual isolation and heat exchange; The bypass circulation comprises that also bypass throttling arrangement, bypass condensation chamber, bypass throttling arrangement, bypass evaporation cavity and the 3rd compression chamber are connected in series in the bypass circulation successively; Main road refrigerating chamber and main road heat in the circulation of chamber access main road.

Further, making-up air device is economizer, comprises the first refrigerant chamber and the second refrigerant chamber of mutual isolation and heat exchange; The main road that the first refrigerant chamber is connected on the bypass condenser heats between the gas supplementing opening of chamber and compressor, the main road of bypass condenser heats the chamber and is connected between condenser and the first refrigerant chamber, and heats to connect between the chamber at condenser and main road the first throttle device is set; The second refrigerant chamber is connected between the main road refrigerating chamber of condenser and bypass evaporimeter, and the main road refrigerating chamber of bypass evaporimeter is connected between evaporimeter and the second refrigerant chamber, and connects between main road refrigerating chamber and evaporimeter the second throttling arrangement is set.

Further, making-up air device is flash evaporation; Flash evaporation comprises and the first cold-producing medium port that is connected of condenser, the gaseous phase outlet that is connected with the gas supplementing opening of compressor and the second refrigerant port that is connected with evaporimeter; The main road of bypass condenser heats chamber series connection and is arranged between the first cold-producing medium port and condenser of flash evaporation, and connects between main road heats chamber and condenser the first throttle device is set; The series connection of the main road refrigerating chamber of bypass evaporimeter is arranged between the second refrigerant port and evaporimeter of flash evaporation, and connects between main road refrigerating chamber and evaporimeter the second throttling arrangement is set.

According to air-conditioner of the present utility model, because compressor has three compression chambers, the first and second compression chambers of compressor are arranged in the main road circulation, and the 3rd compression chamber is connected in the bypass circulation, when being compressor operating, compress simultaneously the cold-producing medium in main road circulation and the bypass circulation.Compare common machinery and cross the cold circulatory system and need two compressors to be separately positioned in main road circulation and the bypass circulation, the utility model can reduce by a bypass compressor, thus the complexity of reduction cost, volume and control.By the bypass circulation that is coupled with the main road circulation is set, the bypass condenser is to entering the cold-producing medium heat supply of making-up air device, effectively improved the air compensation of making-up air device, the bypass evaporimeter can improve the degree of supercooling of cold-producing medium to entering the cold-producing medium refrigeration of the second throttling arrangement.By improving air compensation and cold-producing medium degree of supercooling, refrigerating capacity and Energy Efficiency Ratio in the time of can effectively improving the air-conditioner cooling condition, and heating capacity and coefficient of performance in heating during heating condition.

Description of drawings

The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the system schematic according to the first embodiment of air-conditioner of the present utility model;

Fig. 2 is the system schematic according to the second embodiment of air-conditioner of the present utility model;

Fig. 3 is the structural representation according to the second cylinder of the first embodiment of the compressor of air-conditioner of the present utility model;

Fig. 4 is the structural representation according to the first embodiment of the compressor of air-conditioner of the present utility model; And

Fig. 5 is the structural representation according to the second embodiment of the compressor of air-conditioner of the present utility model.

The specific embodiment

Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

Shown in Fig. 1 to 2, according to air-conditioner of the present utility model, comprise compressor 1 and the main road circulation that is connected with compressor 1 and bypass circulation, compressor comprises the first compression chamber A, the second compression chamber B and the 3rd compression chamber C, the first compression chamber A and the second compression chamber B are arranged in the main road circulation, and the 3rd compression chamber C is connected in the bypass circulation; Main road circulation also comprise condenser 3, evaporimeter 2 and be connected to condenser 3 and evaporimeter 2 between with the making-up air device 5 to compressor 1 tonifying Qi; Bypass circulation also comprises to thebypass condenser 901 of the cold-producing medium heat supply that enters making-up air device 5 with to thebypass evaporimeter 902 of the cold-producing medium refrigeration that enters evaporimeter 2.

The utility model adopts the compressor 1 with three compression chambers, and the first and second compression chambers of compressor 1 are arranged in the main road circulation, and the 3rd compression chamber is connected in the bypass circulation.During compressor 1 work, compress simultaneously the cold-producing medium in main road circulation and the bypass circulation.Compare common machinery and cross the cold circulatory system and need two compressors to be separately positioned in main road circulation and the bypass circulation, the utility model can reduce by a bypass compressor, thus the complexity of reduction cost, volume and control.By the bypass circulation that is coupled with the main road circulation is set, 901 pairs of bypass condensers enter the cold-producing medium heat supply of making-up air device 5, effectively improved the air compensation of making-up air device 5,902 pairs in bypass evaporimeter enters the cold-producing medium refrigeration of thesecond throttling arrangement 402, can improve the degree of supercooling of cold-producing medium.By improving air compensation and cold-producing medium degree of supercooling, refrigerating capacity and Energy Efficiency Ratio in the time of can effectively improving the air-conditioner cooling condition, and heating capacity and coefficient of performance in heating during heating condition can also reduce the delivery temperature of compressor.

Particularly, as shown in Figure 3 and Figure 4, in the first embodiment of the compressor of air-conditioner of the present utility model, compressor 1 adopts two-spool compressor, namely comprise thefirst cylinder 10 and thesecond cylinder 20, but different from common two-spool compressor is that thesecond cylinder 20 of two-spool compressor of the present utility model has two slide plates, corresponding two slide plates have two air entries and two exhaust outlets.Namely thesecond cylinder 20 is divided into the second compression chamber B and the 3rd compression chamber C by thefirst slide plate 21 and thesecond slide plate 22 are set with thesecond cylinder 20, and thefirst cylinder 10 has the first compression chamber A.

The first compression chamber A and the second compression chamber B series connection form two stages of compression, and are arranged in the main road circulation, to the refrigerant compression of main road circulation.The 3rd compression chamber C has independently air entry and exhaust outlet, and air entry is connected with the pipeline of exhaust outlet with the bypass circulation.

More specifically, as shown in Figure 3, in thesecond cylinder 20, the angle between thefirst slide plate 21 and thesecond slide plate 22 is α, wherein, and 85 °≤α≤135 °.Setting position by choose reasonable thefirst slide plate 21 and thesecond slide plate 22, i.e. angle α between thefirst slide plate 21 and thesecond slide plate 22, can regulate the capacity relative size of the second compression chamber B and the 3rd compression chamber C, the amount of capacity of the 3rd compression chamber C directly affects the refrigerating capacity of bypass circulation, thereby affects the efficient of air-conditioner.Preferably, the capacity VA of the first compression chamber A, the capacity VB of the second compression chamber B, the capacity VC of the 3rd compression chamber C is when satisfying the scope of 1.0≤VA/VB≤1.35,0.1≤VC/VB≤0.4, can make main road internal circulating load and bypass internal circulating load reach optimum, thereby realize more excellent household air-conditioner.

The second embodiment of the compressor of air-conditioner of the present utility model as shown in Figure 5, compressor 1 adopts three-rotor compressor, be that compressor comprises thefirst cylinder 10, thesecond cylinder 20 and the3rd cylinder 30 as shown in Figure 5, accordingly, thefirst cylinder 10 has the first compression chamber A, and thesecond cylinder 20 has the second compression chamber B, and the3rd cylinder 30 has the 3rd compression chamber C, thefirst cylinder 10 and thesecond cylinder 20 are connected mutually, thereby the main road cold-producing medium is formed two stages of compression.The3rd cylinder 30 has independently air inlet and exhaust outlet, and is connected in the bypass circulation, to the refrigerant compression of bypass circulation.Similar with the first embodiment, the capacity VA of the first compression chamber A, the capacity VB of the second compression chamber B, the capacity VC of the 3rd compression chamber C, in satisfied 1.0≤VA/VB≤1.35,0.1 during the scope of≤VC/VB≤0.4, can make main road internal circulating load and bypass internal circulating load reach optimum, thereby realize more excellent household air-conditioner.

Main road circulation and bypass cycle throughbypass condenser 901 and 902 couplings of bypassevaporimeter.Bypass condenser 901 andbypass evaporimeter 902 all have two mutually refrigerant chamber of the also mutual heat exchange of isolation, be thatbypass condenser 901 comprises that bypass condensation chamber and the main road of mutual isolation and heat exchange heat the chamber,bypass evaporimeter 902 comprises bypass evaporation cavity and the main road refrigerating chamber of mutual isolation and heat exchange.Bypass condensation chamber and bypass evaporation cavity are connected in the bypass circulation, make respectively condensation of refrigerant and the evaporation of bypass circulation; Main road heats the chamber and the main road refrigerating chamber is arranged in the main road circulation.During work, the bypass cold-producing medium in the bypass condensation chamber and main road heat the main road cold-producing medium heat exchange in the chamber, thereby make the bypass condensation of refrigerant, the heat absorption of main road cold-producing medium, and make the part evaporation, thus the mass dryness fraction of the cold-producing medium that enters making-up air device 5 is improved; Main road cold-producing medium in the main road refrigerating chamber and the bypass cold-producing medium heat exchange in the bypass evaporation cavity, bypass cold-producing medium evaporation endothermic, thus make the cold-producing medium that enters thesecond throttling arrangement 402 excessively cold.

As shown in Figure 1, in the first embodiment of air-conditioner of the present utility model, making-up air device 5 is economizer, comprises the first refrigerant chamber and the second refrigerant chamber of mutual isolation and heat exchange; The main road that the first refrigerant chamber is connected onbypass condenser 901 heats between the gas supplementing opening of chamber and compressor 1, the main road ofbypass condenser 901 heats the chamber and is connected between condenser 3 and the first refrigerant chamber, and heats to connect between the chamber at condenser 3 and main roadfirst throttle device 401 is set; The second refrigerant chamber is connected between the main road refrigerating chamber of condenser 3 andbypass evaporimeter 902, the main road refrigerating chamber ofbypass evaporimeter 902 is connected between evaporimeter 2 and the second refrigerant chamber, and connects between main road refrigerating chamber and evaporimeter 2 thesecond throttling arrangement 402 is set.

During air conditioner heat-production work, the exhaust of compressor 1 is through condenser 3(indoor heat exchanger) after be divided into the first branch road and the second branch road (tonifying Qi road), the cold-producing medium of the first branch road enters the second refrigerant chamber of making-up air device 5(economizer) crossed cold after again through the main road refrigerating chamber ofbypass evaporimeter 902 by further excessively cold, through twice the first excessively cold branch road cold-producing medium through thesecond throttling arrangement 402 reducing pressure by regulating flows by evaporimeter 2(outdoor heat exchanger) enter the low pressure air suction mouth of compressor 1, the cold-producing medium of the second branch road (tonifying Qi road) enters the evaporation of bypass condenser heat absorbing part behindfirst throttle device 401 reducing pressure by regulating flows, again through the first refrigerant chamber of making-up air device 5(economizer) heat absorption enter after the evaporation fully compressor 1 gas supplementing opening and with the refrigerant mixed that enters from the low pressure air suction mouth through being compressed to for the first time intermediate pressure after discharge from exhaust outlet through for the second time compression again, form the main road circulation.The exhaust of the 3rd compression chamber C of compressor enters the bypass condensation chamber heat radiation ofbypass condenser 901 bybypass throttling arrangement 403 reducing pressure by regulating flows, enter the 3rd compression chamber C after the bypass evaporation cavity that enters againbypass evaporimeter 902 absorbs heat and evaporates and discharge after compression, form the bypass circulation.

In the first embodiment, through the cold-producing medium of thesecond throttling arrangement 402 by economizer andbypass evaporimeter 902 twice excessively cold, specific enthalpy significantly descends, thereby makes evaporimeter 2(outdoor heat exchanger) to import and export than the remarkable rising of enthalpy difference, the evaporimeter caloric receptivity increases and compressor reduces thanmerit.By bypass condenser 901 and twice heating of economizer, tonifying Qi road refrigerant mass fluxes increases through the cold-producing medium after thefirst throttle device 401, thereby increases air compensation, and then reduces the delivery temperature of compressor 1.Almost nil because of low-temperature receiver and the thermal source temperature difference of bypass circulation, so the coefficient of performance of bypass circulation is relatively very high, and heating capacity and the coefficient of performance in heating of air-conditioner all are significantly improved, and compressor exhaust temperature descends simultaneously.

As shown in Figure 2, in the second embodiment of air-conditioner of the present utility model, making-up air device 5 is flash evaporation; Flash evaporation comprises and the first cold-producing medium port that is connected of condenser 3, the gaseous phase outlet that is connected with the gas supplementing opening of compressor 1 and the second refrigerant port that is connected with evaporimeter 2; The main road ofbypass condenser 901 heats chamber series connection and is arranged between the first cold-producing medium port and condenser 3 of flash evaporation, and connects between main road heats chamber and condenser 3first throttle device 401 is set; The series connection of the main road refrigerating chamber ofbypass evaporimeter 902 is arranged between the second refrigerant port and evaporimeter 2 of flash evaporation, and connects between main road refrigerating chamber and evaporimeter 2 thesecond throttling arrangement 402 is set.

In this embodiment, during air conditioner heat-production work, the exhaust of compressor 1 is through condenser 3(indoor heat exchanger), after heating the chamber evaporation endothermic, the main road that entersbypass condenser 901 behind thefirst throttle device 401 enters making-up air device 5(flash evaporation), and gas-liquid separation in flash evaporation, gas refrigerant after the separation enters the compressor gas supplementing opening, the main road refrigerating chamber that liquid refrigerant after the separation entersbypass evaporimeter 902 cooling that is cooled enters evaporimeter 2(outdoor heat exchanger by thesecond throttling arrangement 402 reducing pressure by regulating flows) enter the air entry of compressor 1 after the heat absorption evaporation, compressed mix with the refrigerant gas that enters from gas supplementing opening to the intermediate pressure and further compressed after discharge from exhaust outlet, form the main road circulation.The exhaust of the 3rd compression chamber C enters the bypass condensation chamber heat radiation ofbypass condenser 901 bybypass throttling arrangement 403 reducing pressure by regulating flows, enter the 3rd compression chamber C after the bypass evaporation cavity that enters againbypass evaporimeter 902 absorbs heat and evaporates and discharge after compression, form the bypass circulation.

In this embodiment, excessively cold throughbypass evaporimeter 902 through the cold-producing medium of thesecond throttling arrangement 402, specific enthalpy significantly descends, thereby makes evaporimeter 2(outdoor heat exchanger) to import and export than the remarkable rising of enthalpy difference, the evaporimeter caloric receptivity increases and compressor reduces than merit., the amount of cold-producing medium gasification is increased, thereby increase flash evaporation to the air compensation of compressor 1 by 901 heating of bypass condenser through the cold-producing medium after thefirst throttle device 401, and then reduce the delivery temperature of compressor 1.Almost nil because of low-temperature receiver and the thermal source temperature difference of bypass circulation, so the coefficient of performance of bypass circulation is relatively very high, and heating capacity and the coefficient of performance in heating of air-conditioner all are significantly improved, and compressor exhaust temperature descends simultaneously.

The structure of the economizer of air-conditioner of the present utility model,bypass condenser 901 andbypass evaporimeter 902 can be double-tube heat exchanger, plate type heat exchanger, also can be micro-channel heat exchanger and miniature case tube heat exchanger.In air-conditioner of the present utility model, flash evaporation can be unidirectional flash evaporation or two-way flash evaporation, also can be that other have the flash evaporation of mending the gas carrying liquid function.First throttle device 401 and thesecond throttling arrangement 402 andbypass throttling arrangement 403 can be capillary, restriction sleeve, heating power expansion valve, electric expansion valve or aforementioned any reasonable combination.In air-conditioner of the present utility model, the parts such as four-way change-over valve that main road circulation and bypass circulation can add necessity are to adapt to refrigeration, to heat or the application scenario such as water heating.

As can be seen from the above description, the utility model the above embodiments have realized following technique effect:

According to air-conditioner of the present utility model, because compressor has three compression chambers, the first and second compression chambers of compressor are arranged in the main road circulation, and the 3rd compression chamber is connected in the bypass circulation, when being compressor operating, compress simultaneously the cold-producing medium in main road circulation and the bypass circulation.Compare common machinery and cross the cold circulatory system and need two compressors to be separately positioned in main road circulation and the bypass circulation, the utility model can reduce by a bypass compressor, thus the complexity of reduction cost, volume and control.By the bypass circulation that is coupled with the main road circulation is set, the bypass condenser is to entering the cold-producing medium heat supply of making-up air device, effectively improved the air compensation of making-up air device, the bypass evaporimeter can improve the degree of supercooling of cold-producing medium to entering the cold-producing medium refrigeration of the second throttling arrangement.By improving air compensation and cold-producing medium degree of supercooling, refrigerating capacity and Energy Efficiency Ratio in the time of can effectively improving the air-conditioner cooling condition, and heating capacity and coefficient of performance in heating during heating condition can also reduce the delivery temperature of compressor.

The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (8)

1. an air-conditioner comprises compressor (1) and the main road circulation that is connected with described compressor (1) and bypass circulation, it is characterized in that,

Described compressor comprises the first compression chamber (A), the second compression chamber (B) and the 3rd compression chamber (C), described the first compression chamber (A) and the second compression chamber (B) are arranged in the described main road circulation, and described the 3rd compression chamber (C) is connected in the described bypass circulation;

The circulation of described main road also comprise condenser (3), evaporimeter (2) and be connected to described condenser (3) and described evaporimeter (2) between with the making-up air device (5) to described compressor (1) tonifying Qi;

Described bypass circulation also comprises the bypass condenser (901) of the cold-producing medium heat supply that enters described making-up air device (5) and the bypass evaporimeter (902) that the cold-producing medium that enters described evaporimeter (2) is freezed.

2. air-conditioner according to claim 1 is characterized in that,

Described compressor (1) is two-spool compressor, comprise the first cylinder (10) and the second cylinder (20), wherein, described the first cylinder (10) has described the first compression chamber (A), is provided with the first slide plate (21) and the second slide plate (22) in described the second cylinder (20) so that described the second cylinder (20) is divided into described the second compression chamber (B) and described the 3rd compression chamber (C);

Upper the first air entry and the first row gas port that is communicated with described the second compression chamber (B) that arrange of described the second cylinder (20), and the second air entry and the second row gas port that are communicated with described the 3rd compression chamber (C), described the second compression chamber (B) is connected with described the first compression chamber (A) by described the first air entry and is arranged in the described main road circulation, and described the 3rd compression chamber (C) is connected in the described bypass circulation by described the second air entry and second row gas port.

3. air-conditioner according to claim 2 is characterized in that,

Angle between described the first slide plate (21) and described the second slide plate (22) is α, wherein, and 85 °≤α≤135 °.

4. air-conditioner according to claim 1 is characterized in that,

Described compressor (1) is three-rotor compressor, comprise the first cylinder (10), the second cylinder (20) and the 3rd cylinder (30), wherein, described the first cylinder (10) has described the first compression chamber (A), described the second cylinder (20) has described the second compression chamber (B), and described the 3rd cylinder (30) has described the 3rd compression chamber (C);

Described the first compression chamber (A) and described the second cylinder (20) are mutually connected and are arranged in the described main road circulation, and described the 3rd compression chamber (C) is connected in the described bypass circulation.

5. each described air-conditioner in 4 according to claim 1 is characterized in that,

The capacity of described the first compression chamber (A) is VA, and the capacity of described the second compression chamber (B) is VB, and the capacity of described the 3rd compression chamber (C) is VC, wherein, and 1.0≤VA/VB≤1.35,0.1≤VC/VB≤0.4.

6. air-conditioner according to claim 1 is characterized in that,

Described bypass condenser (901) comprises that bypass condensation chamber and the main road of mutual isolation and heat exchange heat the chamber;

Described bypass evaporimeter (902) comprises bypass evaporation cavity and the main road refrigerating chamber of mutual isolation and heat exchange;

Described bypass circulation comprises that also bypass throttling arrangement (403), described bypass condensation chamber, bypass throttling arrangement (403), bypass evaporation cavity and described the 3rd compression chamber (C) are connected in series in the described bypass circulation successively;

Described main road refrigerating chamber and main road heat the chamber and access in the described main road circulation.

7. air-conditioner according to claim 6 is characterized in that,

Described making-up air device (5) is economizer, comprises the first refrigerant chamber and the second refrigerant chamber of mutual isolation and heat exchange;

The main road that described the first refrigerant chamber is connected on described bypass condenser (901) heats between the gas supplementing opening of chamber and described compressor (1), the main road of described bypass condenser (901) heats the chamber and is connected between described condenser (3) and described the first refrigerant chamber, and heats to connect between the chamber at described condenser (3) and described main road first throttle device (401) is set;

Described second refrigerant chamber is connected between the main road refrigerating chamber of described condenser (3) and described bypass evaporimeter (902), the main road refrigerating chamber of described bypass evaporimeter (902) is connected between described evaporimeter (2) and the described second refrigerant chamber, and connects between described main road refrigerating chamber and described evaporimeter (2) the second throttling arrangement (402) is set.

8. air-conditioner according to claim 6 is characterized in that,

Described making-up air device (5) is flash evaporation;

Described flash evaporation comprises and the first cold-producing medium port that is connected of described condenser (3), the gaseous phase outlet that is connected with the gas supplementing opening of described compressor (1) and the second refrigerant port that is connected with described evaporimeter (2);

The main road of described bypass condenser (901) heats chamber series connection and is arranged between the first cold-producing medium port and described condenser (3) of described flash evaporation, and connects between described main road heats chamber and described condenser (3) first throttle device (401) is set;

The series connection of the main road refrigerating chamber of described bypass evaporimeter (902) is arranged between the second refrigerant port and described evaporimeter (2) of described flash evaporation, and connects between described main road refrigerating chamber and described evaporimeter (2) the second throttling arrangement (402) is set.

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