CN205825482U - Air conditioning system - Google Patents

Abstract

The open a kind of air conditioning system of this utility model, relates to field of air conditioning.Wherein air conditioning system includes compressor, outdoor heat converter, throttling arrangement and the indoor heat converter being sequentially connected with along cold-producing medium flow direction, and wherein compressor includes at least two compressors being connected in parallel.By the way of using multiple compressors to be connected in parallel, the multiple compressors being connected in parallel is carried out QI invigorating operation and twin-tub and the switching of triplex pattern such that it is able to realize improving energy efficiency, thus meet user's request.

Description

Air conditioning system

Technical field

This utility model relates to field of air conditioning, particularly to a kind of air conditioning system.

Background technology

At present, in order to promote multi-online air-conditioning system heating effect at low ambient temperatures, generally use air injection enthalpy-increasing pressure Contracting machine, i.e. by opening air injection enthalpy-increasing under worst cold case, disclosure satisfy that the demand of low-temperature heating to a certain extent.

But, under some load condition, separate unit huge discharge compressor and two small displacement compressors are compared, and efficiency is inclined Low, the most energy-conservation.Simultaneously under worst cold case, enthalpy-increasing compressor, due to the existence of QI invigorating, can improve inspiration capacity, increases The circulating load of cold-producing medium, can promote low-temperature heating ability to a certain extent, but due to system itself system at low ambient temperatures The decay of heat energy power is relatively big, the most still can not meet people's demand to heat under low temperature environment well.

Utility model content

This utility model embodiment provides a kind of air conditioning system, the side being connected in parallel by employing two or multiple compressors Formula, the mode using transfiguration and QI invigorating to combine can be realized as improving energy efficiency, thus meets user's request.

According to an aspect of the present utility model, it is provided that a kind of air conditioning system, including along cold-producing medium flow direction successively Compressor, outdoor heat converter, throttling arrangement and the indoor heat converter connected, wherein:

Compressor includes at least two compressors being connected in parallel.

In one embodiment, air conditioning system also includes Gas-supplying enthalpy-increasing branch road, wherein:

Pipeline connection between one end and throttling arrangement and the indoor heat converter of Gas-supplying enthalpy-increasing branch road, Gas-supplying enthalpy-increasing branch road The other end connect with the gas supplementing opening of each compressor, in order to supplement cold-producing medium to each compressor.

In one embodiment, Gas-supplying enthalpy-increasing branch road is provided with the control valve for regulating air compensation.

In one embodiment, air conditioning system also includes heat exchanger, for realizing the heat of Gas-supplying enthalpy-increasing branch road and pipeline Exchange.

In one embodiment, heat exchanger is plate type heat exchanger.

In one embodiment, further respectively have for disappearing at the gas supplementing opening of each compressor in Gas-supplying enthalpy-increasing branch road Making-up air device except superfeed pressure pulsation.

In one embodiment, being additionally provided with QI invigorating check valve in Gas-supplying enthalpy-increasing branch road, the conducting direction of QI invigorating check valve is From heat exchanger to corresponding making-up air device, to avoid cold-producing medium to enter pipeline from the gas supplementing opening of compressor.

In one embodiment, Gas-supplying enthalpy-increasing branch road is additionally provided with for controlling whether respectively to each compressor offer refrigeration The QI invigorating branch switch of agent.

In one embodiment, air conditioning system also includes the first transfiguration switch and the second transfiguration switch, wherein the first transfiguration One end of switch connects with the air vent of each compressor, and the other end of the first transfiguration switch is with the positive-displacement apparatus of each compressor even Logical, one end of the second transfiguration switch connects with the air entry of each compressor, the other end of the second transfiguration switch and each compressor Positive-displacement apparatus connects.

In one embodiment, air conditioning system also includes oil eliminator, and wherein oil eliminator is arranged on compressor and room On pipeline between outer heat-exchanger.

In one embodiment, the entrance of oil eliminator connects with the air vent of each compressor, and the first of oil eliminator goes out Mouth connects with the entrance of outdoor heat converter.

In one embodiment, the pipeline between the air vent and the entrance of oil eliminator of compressor is additionally provided with aerofluxus Check valve, the conducting direction of exhaust check valve is the entrance from the air vent of compressor to oil eliminator, thus avoids cold-producing medium Compressor is entered from the air vent of compressor.

In one embodiment, air conditioning system also includes all oil branch roads, wherein one end of the most oily branch road and oil eliminator Second outlet, all oil other ends of branch road connect with the air entry of each compressor.

In one embodiment, the most oily branch road is provided with throttle part.

In one embodiment, throttle part is capillary tube.

In one embodiment, the most oily branch road is additionally provided with all oil branch switch for controlling all oil branch road break-makes.

In one embodiment, all oil branch switch are oil return valve.

In one embodiment, air conditioning system also includes the oil extraction of oil extraction branch road, one end of oil extraction branch road and each compressor Mouth connection, the other end of oil extraction branch road connects with the entrance of oil eliminator.

In one embodiment, oil extraction branch road is additionally provided with oil extraction check valve, the conducting direction of oil extraction check valve be from The oil drain out of compressor is to the entrance of oil eliminator, thus avoids cold-producing medium to enter compressor from the oil drain out of compressor.

By detailed description to exemplary embodiment of the present utility model referring to the drawings, of the present utility model other Feature and advantage thereof will be made apparent from.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only It is embodiments more of the present utility model, for those of ordinary skill in the art, before not paying creative work Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the schematic diagram of one embodiment of this utility model air conditioning system.

Fig. 2 is the schematic diagram of this utility model another embodiment of air conditioning system.

Fig. 3 is the schematic diagram of the another embodiment of this utility model air conditioning system.

Fig. 4 is the schematic diagram of the another embodiment of this utility model air conditioning system.

Fig. 5 is the schematic diagram of the another embodiment of this utility model air conditioning system.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Description only actually at least one exemplary embodiment is illustrative below, never as to this practicality Any restriction that is novel and that apply or use.Based on the embodiment in this utility model, those of ordinary skill in the art are not having Have and make the every other embodiment obtained under creative work premise, broadly fall into the scope of this utility model protection.

Unless specifically stated otherwise, the parts illustrated the most in these embodiments and the table positioned opposite, digital of step Reach formula and numerical value is not intended to scope of the present utility model.

Simultaneously, it should be appreciated that for the ease of describing, the size of the various piece shown in accompanying drawing is not according to reality Proportionate relationship draw.

May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable In the case of when, described technology, method and apparatus should be considered to authorize a part for description.

It is shown here that any occurrence should be construed as merely exemplary with in all examples discussed, and not It is as restriction.Therefore, other example of exemplary embodiment can have different values.

It should also be noted that similar label and letter represent similar terms, therefore, the most a certain Xiang Yi in following accompanying drawing Individual accompanying drawing is defined, then need not it is further discussed in accompanying drawing subsequently.

Fig. 1 is the schematic diagram of one embodiment of this utility model air conditioning system.As it is shown in figure 1, this air conditioning system can include Compressor 1, outdoor heat converter 2, throttling arrangement 3 and the indoor heat converter 4 being sequentially connected with along cold-producing medium flow direction, Wherein compressor 1 includes at least two compressors being connected in parallel 11,12.

Wherein, the air vent 111 of compressor 11 and the air vent 112 of compressor 12 in parallel after with outdoor heat converter 2 even Logical, the air entry 112 of compressor 11 connects with indoor heat converter 4 after air entry 122 parallel connection of compressor 12.

Alternatively, compressor 11,12 can be screw compressor or rotor compressor.

Alternatively, indoor heat converter 4 can include a heat exchanger, it is possible to include the heat exchanger of multiple parallel connection. In the case of indoor heat converter 4 includes multiple heat exchanger in parallel, the air conditioning system involved by this utility model is many On-line system.

The air conditioning system provided based on this utility model above-described embodiment, by using two or multiple compressors parallel connection to connect The mode connect, uses the pattern of transfiguration and QI invigorating switching to realize improving energy efficiency, thus meets user's request.

Fig. 2 is the schematic diagram of this utility model another embodiment of air conditioning system.Compared with embodiment illustrated in fig. 1, in Fig. 2 institute Showing in embodiment, air conditioning system also includes Gas-supplying enthalpy-increasing branch road 5.Wherein, one end of Gas-supplying enthalpy-increasing branch road 5 and throttling arrangement 3 and Pipeline connection between indoor heat converter 4, the other end of Gas-supplying enthalpy-increasing branch road 5 connects with the gas supplementing opening of each compressor, such as The gas supplementing opening 123 that the other end of Gas-supplying enthalpy-increasing branch road 5 connects with compressor 12 with the gas supplementing opening 113 of compressor 11 respectively connects, To supplement cold-producing medium to each compressor 11,12.

Alternatively, Gas-supplying enthalpy-increasing branch road 5 is provided with the control valve 51 for regulating air compensation.Such as control valve 51 can be Electric expansion valve, the big I of air compensation is controlled according to the aperture size of control valve.

Alternatively, air conditioning system also includes heat exchanger 52, for realizing the heat friendship of Gas-supplying enthalpy-increasing branch road 5 and respective line Change.Such as, heat exchanger 52 can be plate type heat exchanger, in order to utilize the cold-producing medium after control valve 51 throttles to main circulation loop In cold-producing medium cool down.

Alternatively, in Gas-supplying enthalpy-increasing branch road 5, gas supplementing opening (113, the 123) place of close each compressor (11,12) is also distinguished It is provided with the making-up air device eliminating superfeed pressure pulsation.Such as, at the gas supplementing opening 113 of compressor 11, it is being provided with making-up air device 531, at the gas supplementing opening 123 of compressor 12, it is being provided with making-up air device 532.By arranging making-up air device, QI invigorating pressure can be eliminated Power is pulsed, and reduces QI invigorating noise.

Alternatively, being additionally provided with check valve 541 and 542 in Gas-supplying enthalpy-increasing branch road 5, the conducting direction of check valve 541 is from heat Exchanger 52 is to corresponding making-up air device 531, and the conducting direction of check valve 542 is to corresponding making-up air device from heat exchanger 52 532, thus avoid cold-producing medium from the gas supplementing opening 113,123 of compressor 11,12 enter throttling arrangement 3 and indoor heat converter 4 it Between pipeline.

Alternatively, Gas-supplying enthalpy-increasing branch road 5 is additionally provided with for controlling whether respectively to each compressor 11,12 offer cold-producing medium QI invigorating branch switch 551,552.Such as, QI invigorating branch switch 551,552 can be electromagnetic valve.Open by controlling QI invigorating branch road Close the state of 551,552, specific compressor can be carried out QI invigorating, or specific compressor not carried out QI invigorating.Such as, when Open QI invigorating branch switch 551, when simultaneously closing off QI invigorating branch switch 552, can be to compressor 11 QI invigorating, not to compressor 12 QI invigorating.

It should be noted that also show cross valve 101 and gas-liquid separator 102 in fig. 2, due to cross valve 101 He The function of gas-liquid separator 102 and effect are that those skilled in the art are understood, and the most do not launch to describe.

Additionally, in the embodiment depicted in figure 2, it is additionally provided with the check valve 31 in parallel with throttling arrangement 3.Wherein in air-conditioning system Time cold, cold-producing medium can pass through check valve 31, and throttling arrangement 3 does not throttles；When air-conditioning heating, cold-producing medium cannot pass through check valve 31, Now throttling arrangement 3 throttles.

Alternatively, in the embodiment depicted in figure 2, being additionally provided with the unloader 32 in parallel with throttling arrangement 3, it is in inlet pressure Carry out action time too high, after unlatching, carry out pressure release, to prevent hypertonia from causing component damage.

Fig. 3 is the schematic diagram of the another embodiment of this utility model air conditioning system.Compared with previous embodiment, shown in Fig. 3 In embodiment, also include the first transfiguration switch 61 and the second transfiguration switch 62, wherein:

One end of first transfiguration switch 61 connects with the air vent 111 of compressor 11, the air vent 121 of compressor 12, the The other end of one transfiguration switch 61 connects with the positive-displacement apparatus 114 of compressor 11, the positive-displacement apparatus 124 of compressor 12, and second becomes The one end holding switch 62 connects with the air entry 112 of compressor 11, the air entry 122 of compressor 12, the second transfiguration switch 62 The other end connects with the positive-displacement apparatus 114 of compressor 11, the positive-displacement apparatus 124 of compressor 12.

Such as, 61 open when the first transfiguration switchs, the second transfiguration switch 62 closedown time, the air vent row of compressor 11 and 12 The high-pressure refrigerant gone out switchs 61 through the first transfiguration, respectively enters the positive-displacement apparatus 114 in compressor 11 and compressor 12 In positive-displacement apparatus 124.Under high pressure effect, the slide plate in the 3rd compression cylinder of compressor 11 and 12 releases lockup state, Compressor 11 and 12 all runs with triplex.

And when the first transfiguration switch 61 closedown, the second transfiguration switch 62 are opened, cold-producing medium is by the second transfiguration switch 62 Respectively enter the air entry 112 in compressor 11 and the air entry 122 in compressor 12.Owing to pressure reduces, compressor 11 Enter lockup state with the slide plate in the 3rd compression cylinder of 12, thus compressor 11 and 12 all runs with twin-tub.

By using corresponding triplex or twin-tub operational mode according to system loading change, can reach the most energy-efficient fortune Row state.Alternatively, the first transfiguration switch 61 and the second transfiguration switch 62 can be electromagnetic valve.

Fig. 4 is the schematic diagram of the another embodiment of this utility model air conditioning system.Compared with previous embodiment, also include oil point From device 7, wherein oil eliminator 7 is arranged on the pipeline between compressor 1 and outdoor heat converter 2.

Wherein, the entrance 71 of oil eliminator 7 connects with the air vent of each compressor, i.e. with the air vent 111 of compressor 11, The air vent 121 of compressor 12 connects, the first outlet 72 entering by cross valve 101 and outdoor heat converter 2 of oil eliminator 7 Mouth 21 connection.

Additionally, air conditioning system also includes equal oil branch road 8, wherein all one end of oil branch road 8 exports with the second of oil eliminator 7 73 connections, all oil other ends of branch road 8 connect with the air entry of each compressor, i.e. with the air entry 112 of compressor 11 and pressing The air entry 122 of contracting machine 12 connects.

Thus, isolated for oil eliminator 7 oil can be distributed to compressor 11 and 12 by all oil branch roads 8, thus realize The purpose of compressor chamber all oil.

Alternatively, the most oily branch road 8 is provided with throttle part 81, in order to realize the effect of reducing pressure by regulating flow.Such as, throttle part 81 can be capillary tube.

Alternatively, the most oily branch road 8 is additionally provided with all oil branch switch 82 for controlling all oil branch road 8 break-makes.Such as, all Oil branch switch 82 can be oil return valve.

Alternatively, the pipeline between the air vent 111 and the entrance 71 of oil eliminator 7 of compressor 11 is additionally provided with unidirectional Valve 63, on the pipeline between the air vent 121 and the entrance 71 of oil eliminator 7 of compressor 12, it is additionally provided with check valve 64, unidirectional The conducting direction of valve 63 is the entrance 71 from the air vent 111 of compressor 11 to oil eliminator 7, and the conducting direction of check valve 64 is From the entrance 71 of the air vent 121 of compressor 12 to oil eliminator 7, thus cold-producing medium is avoided to enter pressure from the air vent of compressor Contracting machine, i.e. avoids cold-producing medium to enter compressor 11 from the air vent 111 of compressor 11, avoid cold-producing medium from compressor 12 simultaneously Air vent 121 enters compressor 12.

Fig. 5 is the schematic diagram of the another embodiment of this utility model air conditioning system.Compared with previous embodiment, described in Fig. 5 In embodiment, also include oil extraction branch road 9.The oil drain out 114 of one end of oil extraction branch road 9 and compressor 11 and the row of compressor 12 Hydraulic fluid port 124 connects, and the other end of oil extraction branch road 9 connects with the entrance 71 of oil eliminator 7.

Wherein, after the oil level within certain compressor exceedes oil drain out, oil more than needed in this compressor is arranged through oil drain out Go out, after oil eliminator 2 separates, returned to the air entry of whole compressor by all oil branch roads 8, thus it is equal to reach compressor chamber The purpose of oil.

Alternatively, being additionally provided with check valve 91 and 92 on oil extraction branch road 9, the conducting direction of check valve 91 is from compressor 11 Oil drain out 114 to the entrance 71 of oil eliminator 7, the conducting direction of check valve 92 is to oil from the oil drain out 124 of compressor 12 The entrance 71 of separator 7, thus avoid the oil drain out 124 of the cold-producing medium oil drain out 114 from compressor 11 and compressor 12 to enter Compressor 11 and 12 is internal.

This utility model, by the way of employing two or multiple compressors are connected in parallel, uses triplex according to load condition Or twin-tub Gas-supplying enthalpy-increasing operational mode, can accomplish that-20 degree heating capacities are unattenuated ,-30 degree heating capacities reach name and heat More than the 70% of ability, high-temperature refrigeration amount reaches more than the 90% of nominal capacity.

Description of the present utility model is given for the sake of example and description, and is not exhaustively or to incite somebody to action this Utility model is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art. Selecting and describing embodiment is in order to principle of the present utility model and actual application are more preferably described, and makes the common skill of this area Art personnel it will be appreciated that this utility model thus design is suitable to the various embodiments with various amendments of special-purpose.

Claims (19)

1. an air conditioning system, it is characterised in that include compressor (1), the room being sequentially connected with along cold-producing medium flow direction Outer heat-exchanger (2), throttling arrangement (3) and indoor heat converter (4), wherein:

Described compressor (1) includes at least two compressors being connected in parallel (11,12).

Air conditioning system the most according to claim 1, it is characterised in that also include Gas-supplying enthalpy-increasing branch road (5), wherein:

Pipeline between one end and described throttling arrangement (3) and the described indoor heat converter (4) of described Gas-supplying enthalpy-increasing branch road (5) Connection, the other end of described Gas-supplying enthalpy-increasing branch road (5) connects with the gas supplementing opening (113,123) of each described compressor (11,12), with Just cold-producing medium is supplemented to each described compressor (11,12).

Air conditioning system the most according to claim 2, it is characterised in that be provided with for adjusting in described Gas-supplying enthalpy-increasing branch road (5) The control valve (51) of joint air compensation.

Air conditioning system the most according to claim 2, it is characterised in that also include heat exchanger (52), is used for realizing described Gas-supplying enthalpy-increasing branch road (5) and the heat exchange of described pipeline.

Air conditioning system the most according to claim 4, it is characterised in that described heat exchanger (52) is plate type heat exchanger.

Air conditioning system the most according to claim 4, it is characterised in that near each institute in described Gas-supplying enthalpy-increasing branch road (5) State gas supplementing opening (113, the 123) place of compressor (11,12) further respectively have making-up air device for eliminating QI invigorating pulsation (531, 532)。

Air conditioning system the most according to claim 6, it is characterised in that be additionally provided with QI invigorating in described Gas-supplying enthalpy-increasing branch road (5) Check valve (541,542), the conducting direction of described QI invigorating check valve (541,542) from described heat exchanger (52) to corresponding Described making-up air device (531,532), to avoid the cold-producing medium gas supplementing opening (113,123) from described compressor (11,12) to enter institute State pipeline.

Air conditioning system the most according to claim 2, it is characterised in that described Gas-supplying enthalpy-increasing branch road (5) is additionally provided with for Control whether to provide to each described compressor (11,12) the QI invigorating branch switch (551,552) of cold-producing medium respectively.

9. according to the air conditioning system according to any one of claim 1-8, it is characterised in that also include the first transfiguration switch (61) With the second transfiguration switch (62), one end of wherein said first transfiguration switch (61) and the aerofluxus of each described compressor (11,12) Mouth (111,121) connection, the other end of described first transfiguration switch (61) and the positive-displacement apparatus of each described compressor (11,12) (114,124) connect, the air entry of one end and each described compressor (11,12) of described second transfiguration switch (62) (112, 122) connection, the other end of described second transfiguration switch (62) and the positive-displacement apparatus (114,124) of each described compressor (11,12) Connection.

10. according to the air conditioning system according to any one of claim 1-8, it is characterised in that also include oil eliminator (7), its Described in oil eliminator (7) be arranged on the pipeline between described compressor (1) and described outdoor heat converter (2).

11. air conditioning systems according to claim 10, it is characterised in that the entrance (71) of described oil eliminator (7) is with each Air vent (111, the 121) connection of described compressor (11,12), the first outlet (72) of described oil eliminator (7) and described room Entrance (21) connection of outer heat-exchanger (2).

12. air conditioning systems according to claim 11, it is characterised in that at the air vent of described compressor (11,12) Exhaust check valve (63,64) it is additionally provided with on pipeline between the entrance (71) of (111,121) and described oil eliminator (7), described The conducting direction of exhaust check valve (63,64) is that the air vent (111,121) from described compressor (11,12) is to described separating of oil The entrance (71) of device (7), thus avoid cold-producing medium to enter described pressure from the air vent (111,121) of described compressor (11,12) Contracting machine (11,12).

13. air conditioning systems according to claim 11, it is characterised in that also include all oil branch road (8), wherein said equal oil One end of branch road (8) connects with the second outlet (73) of described oil eliminator (7), and the other end of described equal oil branch road (8) is with each Air entry (112, the 122) connection of described compressor (11,12).

14. air conditioning systems according to claim 13, it is characterised in that be provided with throttle part in described equal oil branch road (8) (81)。

15. air conditioning systems according to claim 14, it is characterised in that described throttle part (81) is capillary tube.

16. air conditioning systems according to claim 13, it is characterised in that be additionally provided with for controlling in described equal oil branch road (8) Make all oil branch switch (82) of described equal oil branch road (8) break-make.

17. air conditioning systems according to claim 16, it is characterised in that described equal oil branch switch (82) is oil return valve.

18. air conditioning systems according to claim 13, it is characterised in that also include oil extraction branch road (9), described oil extraction branch road (9) one end connects with the oil drain out (114,124) of each described compressor (11,12), the other end of described oil extraction branch road (9) with Entrance (71) connection of described oil eliminator (7).

19. air conditioning systems according to claim 18, it is characterised in that be additionally provided with oil extraction on described oil extraction branch road (9) Check valve (91,92), the conducting direction of described oil extraction check valve (91,92) is the oil drain out from described compressor (11,12) (114,124) are to the entrance (71) of described oil eliminator (7), thus avoid cold-producing medium from the oil extraction of described compressor (11,12) Mouth (114,124) enters described compressor (11,12).