CN104457047A

CN104457047A - Refrigeration equipment for air conditioner

Info

Publication number: CN104457047A
Application number: CN201410736096.8A
Authority: CN
Inventors: 刘雄; 杨艳芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-29
Filing date: 2014-11-29
Publication date: 2015-03-25
Anticipated expiration: 2034-11-29
Also published as: CN104457047B

Abstract

The invention discloses refrigeration equipment for an air conditioner. The refrigeration equipment for the air conditioner comprises a first compression mechanism, a second compression mechanism, a first four-way valve, a second four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first throttle mechanism, a second throttle mechanism, a third throttle mechanism, a first one-way valve and a second one-way valve; the low-pressure node of the first four-way valve is connected with the low-pressure node of the second four-way valve through a sixty-fifth pipeline; the high-pressure node of the first four-way valve is connected with the sixty-fifth pipeline between the low-pressure node of the first four-way valve and the low-pressure node of the second four-way valve through a sixtieth pipeline, the outlet end of the second compression mechanism and the inlet end of the second compression mechanism in sequence; the high-pressure node of the second four-way valve is connected with the outlet end of the first compression mechanism through a sixty-second pipeline. The refrigeration equipment for the air conditioner, disclosed by the invention, is simple in structure, reliable in working and low in cost; dual-temperature cold supply or (and) heat supply can be realized in the operation process; a refrigerant can be prevented from being remained in the heat exchanger; the flow resistance of the refrigerant is reduced.

Description

Operation of air conditioning systems

Technical field

The present invention relates to a kind of operation of air conditioning systems, belong to refrigeration technology field.

Background technology

Present invention applicant disclosed on 01 02nd, 2013, the application number patent of invention that is 201210381271.7 and disclosed in the 25 days December in 2013, application number is that the claims 1 to 3 of the patent of invention of 201310422163.4 proposes a kind of operation of air conditioning systems scheme respectively, its system composition is respectively as shown in Figure 4,5, 6 (that is: the Figure of description 1 to 3 of patent of invention 201210381271.7 and 201310422163.4).From foregoing invention patent specification: Fig. 4,5,6 (that is: the Figure of description 1 to 3 of patent of invention 201210381271.7 and 201310422163.4) respectively shown in scheme can be used for processing the thermostatic and humidistatic air conditioning unit group of air, for having refrigeration, occasion for warm dehumidification the whole year.

From Fig. 4, the description of Fig. 5 and foregoing invention patent is known: work as Fig. 4, when scheme shown in Fig. 5 works under refrigerated dehumidification holds concurrently air reheating function, 3rd heat exchanger 8 uses as condenser, for the reheating of air, and caloric requirement is controlled by adjustment the 3rd throttle mechanism 7 again, as everyone knows, when the 3rd throttle mechanism 7 pass hour, the resistance in refrigerant circulating process can be increased, compressor power consumption is caused to increase, on the other hand when the 3rd throttle mechanism 7 pass hour, a part of refrigerant liquid also can be caused to be trapped in the 3rd heat exchanger 8, circulating mass of refrigerant is caused to change, adverse effect can be caused to the normal operation of operation of air conditioning systems under serious conditions, in order to overcome this impact, the charging amount of cold-producing medium certainly will be increased again.

In addition, also known from the description of Fig. 4, Fig. 5 and foregoing invention patent: when scheme shown in Fig. 4, Fig. 5 works for three in the scheme of separate refrigeration function, the second heat exchanger 4 and the 3rd heat exchanger 8 can only adopt same evaporating temperature cool air or dehumidify; And different evaporating temperatures can not be adopted to cool air or dehumidify, namely in air conditioner unit, second heat exchanger 4 first adopts higher evaporating temperature cool air or dehumidify, then the 3rd heat exchanger 8 adopts lower evaporating temperature cool further air or dehumidify again, to reach energy-conservation object.

Similar problem, also exist in scheme shown in Fig. 6, it is known from the description of foregoing invention patent: when scheme shown in Fig. 6 works refrigerated dehumidification holds concurrently air reheating function, First Heat Exchanger 3 uses as condenser, for the reheating of air, and caloric requirement controls by regulating first throttle mechanism 5 again, therefore, when first throttle mechanism 5 pass hour, also the resistance in refrigerant circulating process can be increased, compressor power consumption is caused to increase, on the other hand when first throttle mechanism 5 pass hour, a part of refrigerant liquid can be caused equally to be trapped in First Heat Exchanger 3, circulating mass of refrigerant is caused to change, adverse effect is caused to the normal operation of operation of air conditioning systems.Scheme shown in Fig. 6 is when the scheme three times work of separate refrigeration function, and First Heat Exchanger 3 and the second heat exchanger 4 also can only adopt same evaporating temperature cool air or dehumidify; And different evaporating temperatures can not be adopted to cool air or dehumidify, cause the energy consumption of Air flow or dehumidifying larger.

Summary of the invention

The object of this invention is to provide one and can reduce compressor power consumption in the course of the work, refrigerant liquid is avoided to be detained in heat exchanger, and can adopt simultaneously two different evaporating temperatures or (with) condensation temperature carries out work, and the simple operation of air conditioning systems of structure.

In order to overcome above-mentioned technology Problems existing, the technical scheme of technical solution problem of the present invention is:

1, a kind of operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7), the first check valve (21) and the second check valve (22), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second check valve (22) arrival end, second check valve (22) port of export, 59 pipeline (59) is connected with the 67 pipeline (67), 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 by the 65 pipeline (65) between the low pressure node (73) of the 51 pipeline (51) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80).

2, a kind of operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7), the first check valve (21) and the second check valve (22), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second check valve (22) arrival end, second check valve (22) port of export, 59 pipeline (59) is connected with the 67 pipeline (67), 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 63 pipeline (63) by the 51 pipeline (51).

3, a kind of operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7), the first check valve (21) and the second check valve (22), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second check valve (22) arrival end, second check valve (22) port of export, 59 pipeline (59) is connected with the 67 pipeline (67), 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 68 pipeline (68) by the 51 pipeline (51).

4, a kind of operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7) and the first check valve (21), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second heat exchanger (4), 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).

Compared with prior art, its beneficial effect is in the present invention:

1. operationally, the delay of cold-producing medium in heat exchanger can be avoided, compressor power consumption can be reduced;

2. can use simultaneously two different evaporating temperatures or (with) condensation temperature carries out work;

3. structure is simple;

4. the present invention is applicable to industry and civilian operation of air conditioning systems, is specially adapted to the occasion cold and hot amount being had to different temperatures demand.

Accompanying drawing explanation

Fig. 1 is the embodiment of the present invention 1 structural representation;

Fig. 2 is the embodiment of the present invention 2 structural representation;

Fig. 3 is the embodiment of the present invention 3 structural representation;

Fig. 4 is prior art structural representation;

Fig. 5 is prior art structural representation;

Fig. 6 is prior art structural representation.

Detailed description of the invention

Below in conjunction with accompanying drawing, content of the present invention is described in further detail.

Embodiment 1

As shown in Figure 1, the present embodiment is a kind of operation of air conditioning systems that simultaneously can control the temperature of air, humidity, for having refrigeration the whole year, supplying the occasion of warm dehumidification.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 check valve 21 and the second check valve 22; First throttle mechanism 5, second throttle body 6, the 3rd throttle mechanism 7 are all electric expansion valve.

Second heat exchanger 4, the 3rd heat exchanger 8 are arranged in same air conditioner unit 10, and along the flow direction of air, the 3rd heat exchanger 8 is in the downwind side of the second heat exchanger 4; There are two temperature-detecting devices, its set-up mode is: along the flow direction of air, first temperature-detecting device 31 is arranged at the inlet side of the second heat exchanger 4, for detecting the second heat exchanger 4 intake air dry-bulb temperature, second temperature-detecting device 32 is also arranged at the inlet side of the second heat exchanger 4, for detecting the intake air wet-bulb temperature of the second heat exchanger 4.Air handled by air conditioner unit 10 is indoor circulation air.

This operation of air conditioning systems, in whole year operation process, can realize several functions.During work, First Heat Exchanger 3 is heat source side heat exchangers, and summer and spring and autumn are as condenser, and distribute the condensation heat produced in refrigeration or dehumidification process to environment, winter, as evaporimeter, absorbs heat from environment, for adding hot-air; Second heat exchanger 4 is the coolers in air conditioner unit 10, can realize cooling or the dehumidifying of air; 3rd heat exchanger 8 is heater in air conditioner unit 10 or cooler, during as heater, can realize heating or the reheating of air, controls wind pushing temperature, during as cooler, can realize cooling or the dehumidifying of air.Workflow under each function is as described below respectively.

(1) separate refrigeration function

During work, the first cross valve 70 high voltage nodes 71 and the first cross valve 70 node 74 that commutates communicates, and the first cross valve 70 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 node 82 that commutates communicates, and the second cross valve 80 node 84 that commutates communicates with the second cross valve 80 low pressure node 83.

Scheme one: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; In air conditioner unit 10, the second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the second 4 pairs, heat exchanger air cools or cool-down dehumidification.

During work, first throttle mechanism 5 standard-sized sheet, second throttle body 6 normally works, and the 3rd throttle mechanism 7 cuts out.

Its workflow is: after cold-producing medium is discharged from second compressing mechanism 2 port of export, to commutate node the 74, the 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism the 5, the 58 pipeline the 58, the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 51 pipeline the 51, the 65 pipeline the 65, the 68 pipeline 68 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, get back to the second compressing mechanism 2 arrival end, enter the second compressing mechanism 2 to be compressed, complete and once circulate.

Scheme two: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; In air conditioner unit 10, the second heat exchanger 4 does not work, and the 3rd heat exchanger 8 normally works.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the 3rd 8 pairs, heat exchanger air cools or cool-down dehumidification.

During work, first throttle mechanism 5 standard-sized sheet, second throttle body 6 is closed, and the 3rd throttle mechanism 7 normally works.

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 commutates node 74, 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5, 58 pipeline 58, 3rd throttle mechanism 7, 3rd heat exchanger 8, 67 pipeline 67, second cross valve 80 commutates node 84, second cross valve 80 low pressure node 83, 65 pipeline 65, 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.

Scheme three: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; In air conditioner unit 10, the second heat exchanger 4, the 3rd heat exchanger 8 all work.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the second heat exchanger 4, the 3rd heat exchanger 8 pairs of air cool or cool-down dehumidification.

During work, first throttle mechanism 5 standard-sized sheet, second throttle body 6, the 3rd throttle mechanism 7 normally work.

Its workflow is: after cold-producing medium is discharged from second compressing mechanism 2 port of export, to commutate node the 74, the 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 58 pipeline 58 and be divided into two-way; The first via through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 51 pipeline 51, enters the 65 pipeline 65 successively; Commutating node 84, second cross valve 80 low pressure node 83 through the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively in second tunnel, also enters the 65 pipeline 65; Two-way, after the 65 pipeline 65 mixes, through the 68 pipeline 68, is got back to the second compressing mechanism 2 arrival end, is entered the second compressing mechanism 2 and compressed, complete and once circulate.

Scheme four: the first compressing mechanism 1, second compressing mechanism 2 all normally works; In air conditioner unit 10, the second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way is after the 64 pipeline 64 mixes, again successively through First Heat Exchanger 3, first throttle mechanism the 5, the 58 pipeline the 58, the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 51 pipeline 51, enter the 65 pipeline 65 and be divided into two-way; Once more enter two compressor structures to be compressed, complete and once circulate.

Scheme five: the first compressing mechanism 1, second compressing mechanism 2 all normally works; In air conditioner unit 10, the second heat exchanger 4 does not work, and the 3rd heat exchanger 8 normally works.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way is after the 64 pipeline 64 mixes, to commutate node 84, second cross valve 80 low pressure node 83 through First Heat Exchanger 3, first throttle mechanism the 5, the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively again, enter the 65 pipeline 65 and be divided into two-way, once more enter two compressor structures to be compressed, complete and once circulate.

Scheme six: the first compressing mechanism 1, second compressing mechanism 2 all normally works; In air conditioner unit 10, the second heat exchanger 4, the 3rd heat exchanger 8 also all work.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way after the 64 pipeline 64 mixes, more successively through First Heat Exchanger 3, first throttle mechanism 5, enters the 58 pipeline 58 and is divided into again two-way; The first via through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 51 pipeline 51, enters the 65 pipeline 65 successively; Commutating node 84, second cross valve 80 low pressure node 83 through the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively in second tunnel, also enters the 65 pipeline 65; Two-way, after the 65 pipeline 65 mixes, is divided into two-way once more, enters two compressor structures respectively and is compressed, complete and once circulate.

(2) refrigerated dehumidification is held concurrently air reheating function

Under this function, the second 4 pairs, heat exchanger air carries out cool-down dehumidification, and the condensation heat some that produces of dehumidifying utilizes First Heat Exchanger 3 to enter environment, another part in the 3rd heat exchanger 8 for the reheating of air.

During work, first throttle mechanism 5, the 3rd throttle mechanism 7 standard-sized sheet, second throttle body 6 normally works; First compressing mechanism 1, second compressing mechanism 2 all normally works.

During work, the first cross valve 70 high voltage nodes 71 and the first cross valve 70 node 74 that commutates communicates, and the first cross valve 70 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 node 84 that commutates communicates, and the second cross valve 80 node 82 that commutates communicates with the second cross valve 80 low pressure node 83.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node the 74, the 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 58 pipeline 58; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 84, the 67 pipeline 67, the 3rd heat exchanger 8, the 3rd throttle mechanism 7 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 58 pipeline 58; Two-way after the 58 pipeline 58 mixes, more successively through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 51 pipeline 51, enters the 65 pipeline 65 and is divided into two-way; Once more enter two compressor structures respectively to be compressed, complete and once circulate.

In the course of work, the control strategy of air conditioner unit 10 intake air dry-bulb temperature is: the actual dry-bulb temperature of the second heat exchanger 4 intake air that controller 30 detects according to the air conditioner unit 10 intake air dry-bulb temperature of setting and the first temperature-detecting device 31, control the cold-producing medium output flow of the first compressing mechanism 1, realize the control to air conditioner unit 10 intake air dry-bulb temperature.

When the first compressing mechanism 1 is frequency-changeable compressor, in the course of work, the control strategy of air conditioner unit 10 intake air dry-bulb temperature is: the actual dry-bulb temperature of the second heat exchanger 4 intake air that controller 30 detects according to the air conditioner unit 10 intake air dry-bulb temperature of setting and the first temperature-detecting device 31, control the operating frequency of the first compressing mechanism 1, realize the control to air conditioner unit 10 intake air dry-bulb temperature.Concrete control procedure for: when the actual dry-bulb temperature of the second heat exchanger 4 intake air that the first temperature-detecting device 31 detects lower than setting air conditioner unit 10 intake air dry-bulb temperature time, increase the operating frequency of the first compressing mechanism 1; When the actual dry-bulb temperature of the second heat exchanger 4 intake air that the first temperature-detecting device 31 detects is higher than the air conditioner unit 10 intake air dry-bulb temperature set, reduce the operating frequency of the first compressing mechanism 1.

In the course of work, the control strategy of air conditioner unit 10 intake air wet-bulb temperature is: the actual wet-bulb temperature of the second heat exchanger 4 intake air that controller 30 detects according to the air conditioner unit 10 intake air wet-bulb temperature of setting and the second temperature-detecting device 32, control the cold-producing medium output flow of the second compressing mechanism 2, realize the control to air conditioner unit 10 intake air wet-bulb temperature.

When the second compressing mechanism 2 is frequency-changeable compressors, in the course of work, the control strategy of air conditioner unit 10 intake air wet-bulb temperature is: the actual wet-bulb temperature of the second heat exchanger 4 intake air that controller 30 detects according to the air conditioner unit 10 intake air wet-bulb temperature of setting and the second temperature-detecting device 32, control the operating frequency of the second compressing mechanism 2, realize the control to air conditioner unit 10 intake air wet-bulb temperature.Concrete control procedure for: when the actual wet-bulb temperature of the second heat exchanger 4 intake air that the second temperature-detecting device 32 detects lower than setting air conditioner unit 10 intake air wet-bulb temperature time, reduce the operating frequency of the second compressing mechanism 2; When the actual wet-bulb temperature of the second heat exchanger 4 intake air that the second temperature-detecting device 32 detects is higher than the air conditioner unit 10 intake air wet-bulb temperature set, increase the operating frequency of the second compressing mechanism 2.

(3) winter air heating function

Under this function, First Heat Exchanger 3 draw heat from environment, the heat drawn, for the heating of air in the 3rd heat exchanger 8, the second heat exchanger 4 does not work.

During work, the first cross valve 70 high voltage nodes 71 and the first cross valve 70 node 72 that commutates communicates, and the first cross valve 70 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 node 84 that commutates communicates, and the second cross valve 80 node 82 that commutates communicates with the second cross valve 80 low pressure node 83.

Scheme one: the first compressing mechanism 1 normally works, and the second compressing mechanism 2 does not work.

During work, first throttle mechanism 5 normally works, and second throttle body 6 is closed, the 3rd throttle mechanism 7 standard-sized sheet.

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 commutates node 84, 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, first cross valve 70 commutates node 74, first cross valve 70 low pressure node 73, 65 pipeline 65, 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.

Scheme two: the first compressing mechanism 1, second compressing mechanism 2 all normally works.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node the 72, the 61 pipeline 61, second check valve 22 arrival end, second check valve 22 port of export, the 59 pipeline 59 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 67 pipeline 67; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node 84 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 67 pipeline 67; Two-way is after the 67 pipeline 67 mixes, to commutate node 74, first cross valve 70 low pressure node 73 through the 3rd heat exchanger 8, the 3rd throttle mechanism the 7, the 58 pipeline 58, first throttle mechanism 5, First Heat Exchanger the 3, the 64 pipeline 64, first cross valve 70 successively again, enter the 65 pipeline 65 and be divided into two-way; Once more enter two compressor structures respectively to be compressed, complete and once circulate.

(4) the double heating function of dehumidifying in winter

In this function, First Heat Exchanger 3 draw heat from environment, the second 4 pairs, heat exchanger air carries out cool-down dehumidification, and the condensation heat produced that dehumidifies and the heat drawn from environment, all for the heating of air in the 3rd heat exchanger 8.

During work, first throttle mechanism 5, second throttle body 6 normally work, the 3rd throttle mechanism 7 standard-sized sheet.

Its workflow is: after cold-producing medium is discharged from first compressing mechanism 1 port of export, to commutate node the 84, the 67 pipeline 67, the 3rd heat exchanger 8, the 3rd throttle mechanism 7 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, enter the 58 pipeline 58 and be divided into two-way; The first via to commutate node 74, first cross valve 70 low pressure node 73 through first throttle mechanism 5, First Heat Exchanger the 3, the 64 pipeline 64, first cross valve 70 successively, enters the 65 pipeline 65; Second tunnel through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 51 pipeline 51, also enters the 65 pipeline 65 successively; Two-way after the 65 pipeline 65 mixes, then through the 63 pipeline 63, enters the first compressing mechanism 1 and is compressed, complete and once circulate.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node the 72, the 61 pipeline 61, second check valve 22 arrival end, second check valve 22 port of export, the 59 pipeline 59 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 67 pipeline 67; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node 84 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 67 pipeline 67; Two-way after the 67 pipeline 67 mixes, more successively through the 3rd heat exchanger 8, the 3rd throttle mechanism 7, enters the 58 pipeline 58 and is divided into again two-way; The first via to commutate node 74, first cross valve 70 low pressure node 73 through first throttle mechanism 5, First Heat Exchanger the 3, the 64 pipeline 64, first cross valve 70 successively, enters the 65 pipeline 65; Second tunnel through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 51 pipeline 51, also enters the 65 pipeline 65 successively; Two-way, after the 65 pipeline 65 mixes, is divided into two-way again, again enters two compressor structures respectively and compressed, complete and once circulate.

(5) winter frost removing function

Under this function, the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; In air conditioner unit 10, the second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work; Second heat exchanger 4 absorbs heat from the air air conditioner unit 10, and the heat absorbed is for the defrosting of First Heat Exchanger 3.

During work, first throttle mechanism 5 standard-sized sheet, second throttle body 6 normally works, and the 3rd throttle mechanism 7 cuts out.Its workflow is identical with the scheme one of the present embodiment separate refrigeration function.

In scheme shown in Fig. 1, second heat exchanger 4 connection scheme is in systems in which: second heat exchanger 4 one end is connected with the 58 pipeline 58 between first throttle mechanism 5 and the 3rd throttle mechanism 7 by second throttle body the 6, the 52 pipeline 52 successively, and second heat exchanger 4 other end is connected with the 65 pipeline 65 between the first cross valve 70 low pressure node 73 and the second cross valve 80 low pressure node 83 by the 51 pipeline 51.

Except such scheme, the second heat exchanger 4 also has two following connection schemes in systems in which:

1) second heat exchanger 4 one end is connected with the 58 pipeline 58 between first throttle mechanism 5 and the 3rd throttle mechanism 7 by second throttle body the 6, the 52 pipeline 52 successively, and second heat exchanger 4 other end is connected with the 63 pipeline 63 by the 51 pipeline 51.

2) second heat exchanger 4 one end is connected with the 58 pipeline 58 between first throttle mechanism 5 and the 3rd throttle mechanism 7 by second throttle body the 6, the 52 pipeline 52 successively, and second heat exchanger 4 other end is connected with the 68 pipeline 68 by the 51 pipeline 51.

Embodiment 2

As shown in Figure 2, the present embodiment is also a kind of operation of air conditioning systems that simultaneously can control the temperature of air, humidity, for having refrigeration the whole year, supplying the occasion of warm dehumidification.The difference of scheme shown in scheme and Fig. 1 shown in Fig. 2 is: do not have the second check valve 22, and the second heat exchanger 4 connection scheme is in systems in which different simultaneously.

Whole equipment shown in Fig. 2 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 check valve 21.First throttle mechanism 5, second throttle body 6, the 3rd throttle mechanism 7 are all electric expansion valve.

This operation of air conditioning systems, in whole year operation process, can realize several functions.During work, First Heat Exchanger 3 is heat source side heat exchangers, and summer and spring and autumn are as condenser, and distribute the condensation heat produced in refrigeration or dehumidification process to environment, winter, as evaporimeter, absorbs heat from environment, for adding hot-air.

Second heat exchanger 4 is cooler in air conditioner unit 10 or heater, and during as cooler, summer or transition season can realize cooling or the dehumidifying of air; During as heater, the heating of air can be realized winter.

3rd heat exchanger 8 is heater in air conditioner unit 10 or cooler, during as heater, can realize heating or the reheating of air, controls wind pushing temperature, during as cooler, can realize cooling or the dehumidifying of air.Workflow under each function is as described below respectively.

(1) separate refrigeration function

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 commutates 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, first cross valve 70 commutates node 72, first cross valve 70 low pressure node 73, 65 pipeline 65, 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.

Scheme two: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; In air conditioner unit 10, the second heat exchanger 4 does not work, and the 3rd heat exchanger 8 works.

Its workflow is: after cold-producing medium is discharged from second compressing mechanism 2 port of export, to commutate node the 74, the 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 58 pipeline 58 and be divided into two-way; The first via to commutate node 72, first cross valve 70 low pressure node 73 through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively, enters the 65 pipeline 65; Commutating node 84, second cross valve 80 low pressure node 83 through the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively in second tunnel, also enters the 65 pipeline 65; Two-way, after the 65 pipeline 65 mixes, through the 68 pipeline 68, is got back to the second compressing mechanism 2 arrival end, is entered the second compressing mechanism 2 and compressed, complete and once circulate.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way is after the 64 pipeline 64 mixes, to commutate node 72, first cross valve 70 low pressure node 73 through First Heat Exchanger 3, first throttle mechanism the 5, the 58 pipeline the 58, the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively again, enter the 65 pipeline 65 and be divided into two-way; Once more enter two compressor structures respectively to be compressed, complete and once circulate.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way is after the 64 pipeline 64 mixes, to commutate node 84, second cross valve 80 low pressure node 83 through First Heat Exchanger 3, first throttle mechanism the 5, the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively again, enter the 65 pipeline 65 and be divided into two-way, once more enter two compressor structures respectively to be compressed, complete and once circulate.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the second heat exchanger 4, the 3rd heat exchanger 8 pairs of air cool or cool-down dehumidification.，

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way after the 64 pipeline 64 mixes, more successively through First Heat Exchanger 3, first throttle mechanism 5, enters the 58 pipeline 58 and is divided into again two-way; The first via to commutate node 72, first cross valve 70 low pressure node 73 through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively, enters the 65 pipeline 65; Commutating node 84, second cross valve 80 low pressure node 83 through the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively in second tunnel, also enters the 65 pipeline 65; Two-way, after the 65 pipeline 65 mixes, once more enters two compressor structures respectively and is compressed, complete and once circulate.

(2) refrigerated dehumidification is held concurrently air reheating function

During work, first throttle mechanism 5, the 3rd throttle mechanism 7 standard-sized sheet, second throttle body 6 normally works.First compressing mechanism 1, second compressing mechanism 2 all normally works.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node the 74, the 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 58 pipeline 58; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 84, the 67 pipeline 67, the 3rd heat exchanger 8, the 3rd throttle mechanism 7 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 58 pipeline 58; Two-way is after the 58 pipeline 58 mixes, to commutate node 72, first cross valve 70 low pressure node 73 through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively again, enter the 65 pipeline 65 and be divided into two-way; Once more enter two compressor structures respectively to be compressed, complete and once circulate.

In the course of work, under this function, the regulable control strategy of air conditioner unit 10 intake air dry-bulb temperature, wet-bulb temperature is identical with the method for embodiment 1 under this function.

(3) winter air heating function

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 draw heat from environment, and the second heat exchanger 4 is for being air heat.

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 node 72 that commutates communicates, and the first cross valve 70 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 node 82 that commutates communicates, and the second cross valve 80 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 commutates node 72, 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 commutates node 74, first cross valve 70 low pressure node 73, 65 pipeline 65, 68 pipeline 68, get back to again the second compressing mechanism 2 arrival end, enter the second compressing mechanism 2 to be compressed, complete and once circulate.

Scheme two: 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 work.

Under this scheme, First Heat Exchanger 3 draw heat from environment, the heat drawn, for the heating of air in the second heat exchanger 4, the 3rd heat exchanger 8.

During work, first throttle mechanism 5 normally works, second throttle body 6, the 3rd throttle mechanism 7 all standard-sized sheets.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node the 72, the 61 pipeline 61, second heat exchanger 4, second throttle body the 6, the 52 pipeline 52 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 58 pipeline 58; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 84, the 67 pipeline 67, the 3rd heat exchanger 8, the 3rd throttle mechanism 7 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 58 pipeline 58; Two-way after the 58 pipeline 58 mixes, then to commutate node 74, first cross valve 70 low pressure node 73 through first throttle mechanism 5, First Heat Exchanger the 3, the 64 pipeline 64, first cross valve 70 successively, enters the 65 pipeline 65 and is divided into two-way; Once more enter two compressors respectively to be compressed, complete one action circulation.

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 work.

Under this scheme, First Heat Exchanger 3 draw heat from environment, the second heat exchanger 4, the 3rd heat exchanger 8 work under different condensation temperatures, add hot-air.That is: the second heat exchanger 4 first adopts the intake air of lower condensation temperature to air conditioner unit 10 to heat; Then, the 3rd heat exchanger 8 adopts higher condensation temperature to continue to heat the air from the second heat exchanger 4 again.Thus improve operating efficiency of the present invention, reach energy-conservation object.

During work, first throttle mechanism 5 normally works, second throttle body 6 standard-sized sheet, and the 3rd throttle mechanism 7 is for controlling the pressure at expulsion of the first compressing mechanism 1.

During work, the first cross valve 70 high voltage nodes 71 and the first cross valve 70 node 72 that commutates communicates, and the first cross valve 70 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 node 84 that commutates communicates, and the second cross valve 80 node 82 that commutates communicates with the second cross valve 80 low pressure node 83.Its workflow is identical with the scheme two of the present embodiment heating function in winter.

In the course of work of this programme, first compressing mechanism 1, second compressing mechanism 2 can adopt variable conpacitance compressor, and the air themperature of method to the 3rd heat exchanger 8, second heat exchanger 4 downwind side exporting refrigerant flow by changing compressor controls respectively.Specifically, when the first compressing mechanism 1, second compressing mechanism 2 is frequency-changeable compressors, the second compressing mechanism 2 is controlled by the air dry-bulb temperature of method to the second heat exchanger 4 downwind side changing its operating frequency; First compressing mechanism 1 is controlled by the air dry-bulb temperature of method to the 3rd heat exchanger 8 downwind side changing its operating frequency.

In the course of work, 3rd throttle mechanism 7 is for controlling the pressure at expulsion of the first compressing mechanism 1, its concrete control method is as follows: on the basis of the 3rd heat exchanger 8 downwind side air themperature expected (that is: the setting value of controller setting), add a heat transfer temperature difference, as the saturation temperature value that the first compressing mechanism 1 pressure at expulsion expected is corresponding, the pressure at expulsion that the first compressing mechanism 1 is expected is determined according to this saturation temperature value, during work, controller is by the valve opening of adjustment the 3rd throttle mechanism 7, the pressure at expulsion of the first compressing mechanism 1 reality is controlled as desired value.Concrete control method is: when the pressure at expulsion of the first compressing mechanism 1 reality is greater than desired value, and when exceeding allowed band, then increase the valve opening of the 3rd throttle mechanism 7; When the pressure at expulsion of the first compressing mechanism 1 reality is less than desired value, and when exceeding allowed band, then reduce the valve opening of the 3rd throttle mechanism 7; When deviation between the pressure at expulsion and desired value of the first compressing mechanism 1 reality is in allowed band, then keep the valve opening of the 3rd throttle mechanism 7 constant.

(4) winter frost removing function

Embodiment 3

As shown in Figure 3, the present embodiment is a kind of operation of air conditioning systems with two evaporating temperature and condensation temperature, for there being the occasion of refrigeration and heating demands the whole year.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 check valve 21 and flow direction control valve 40; First throttle mechanism 5, second throttle body 6, the 3rd throttle mechanism 7 are all electric expansion valve.Operation of air conditioning systems shown in the present embodiment Fig. 3 with the difference of operation of air conditioning systems shown in embodiment 2 Fig. 2 is on system composition: on the basis of operation of air conditioning systems shown in embodiment 2 Fig. 2, a flow direction control valve 40 is added in operation of air conditioning systems shown in Fig. 3, set-up mode in flow direction control valve 40 system is: flow direction control valve 40 is arranged on the 65 pipeline 65, and flow direction control valve 40 one end is connected with the 63 pipeline 63, flow direction control valve 40 other end is connected with the 68 pipeline 68.

During work, the First Heat Exchanger 3 in operation of air conditioning systems shown in Fig. 3 is heat source side heat exchangers, when summer and spring and autumn are as condenser, the condensation heat produced in process of refrigerastion is distributed to environment, winter, as evaporimeter, absorbs heat from environment, for the heating of user.

Second heat exchanger 4 and the 3rd heat exchanger 8 are all user side heat exchangers, when summer and spring and autumn are as evaporimeter, for user's cooling, winter as condenser, for being user's heating.

Workflow under each function is as described below respectively.

(1) refrigerating function

Scheme one: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; Flow direction control valve 40 is opened; First Heat Exchanger 3, second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the second heat exchanger 4 is user's refrigeration.

Scheme two: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; Flow direction control valve 40 is opened; Second heat exchanger 4 does not work, and First Heat Exchanger 3, the 3rd heat exchanger 8 work.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the 3rd heat exchanger 8 is user's refrigeration.

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 commutates node 74, 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5, 58 pipeline 58, 3rd throttle mechanism 7, 3rd heat exchanger 8, 67 pipeline 67, second cross valve 80 commutates node 84, second cross valve 80 low pressure node 83, 65 pipeline 65, flow direction control valve 40, 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.

Scheme three: the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; Flow direction control valve 40 is opened; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 all work.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the second heat exchanger 4, the 3rd heat exchanger 8 work under same evaporating temperature, is user's refrigeration.

Its workflow is: after cold-producing medium is discharged from second compressing mechanism 2 port of export, to commutate node the 74, the 64 pipeline 64, First Heat Exchanger 3, first throttle mechanism 5 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 58 pipeline 58 and be divided into two-way; The first via to commutate node 72, first cross valve 70 low pressure node 73 through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively, enters the 65 pipeline 65; To commutate node 84, second cross valve 80 low pressure node the 83, the 65 pipeline 65, flow direction control valve 40, after first via refrigerant mixed through the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively in second tunnel; Again through the 68 pipeline 68, get back to the second compressing mechanism 2 arrival end, enter the second compressing mechanism 2 and compressed, complete and once circulate.

Scheme four: the first compressing mechanism 1, second compressing mechanism 2 all normally works; Flow direction control valve 40 is opened; First Heat Exchanger 3, second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way is after the 64 pipeline 64 mixes, to commutate node 72, first cross valve 70 low pressure node 73 through First Heat Exchanger 3, first throttle mechanism the 5, the 58 pipeline the 58, the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively again, enter the 65 pipeline 65 and be divided into two-way; The first via, through the 68 pipeline 68, gets back to again the second compressing mechanism 2 arrival end; The first compressing mechanism 1 arrival end, successively through flow direction control valve the 40, the 63 pipeline 63, is got back to again in second tunnel; Again enter two compressor structures respectively to be compressed, complete and once circulate.

Scheme five: the first compressing mechanism 1, second compressing mechanism 2 all normally works; Flow direction control valve 40 is opened; Second heat exchanger 4 does not work, and First Heat Exchanger 3, the 3rd heat exchanger 8 normally work.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way is after the 64 pipeline 64 mixes, to commutate node 84, second cross valve 80 low pressure node 83 through First Heat Exchanger 3, first throttle mechanism the 5, the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively again, enter the 65 pipeline 65 and be divided into two-way; The first via, successively through flow direction control valve the 40, the 68 pipeline 68, gets back to again the second compressing mechanism 2 arrival end; The first compressing mechanism 1 arrival end, through the 63 pipeline 63, is got back to again in second tunnel; Again enter two compressor structures to be compressed, complete and once circulate.

Scheme six: the first compressing mechanism 1, second compressing mechanism 2 all normally works; Flow direction control valve 40 is opened; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 all work.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way after the 64 pipeline 64 mixes, more successively through First Heat Exchanger 3, first throttle mechanism 5, enters the 58 pipeline 58 and is divided into again two-way; The first via to commutate node 72, first cross valve 70 low pressure node 73 through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively, enters the 65 pipeline 65; Commutating node 84, second cross valve 80 low pressure node 83 through the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively in second tunnel, also enters the 65 pipeline 65; After mixing via flow direction control valve 40 in the 65 pipeline 65, be once more divided into two-way, the first via, through the 68 pipeline 68, gets back to again the second compressing mechanism 2 arrival end; The first compressing mechanism 1 arrival end, through the 63 pipeline 63, is got back to again in second tunnel; Again enter two compressor structures to be compressed, complete and once circulate.

Scheme seven: the first compressing mechanism 1, second compressing mechanism 2 all normally works; Flow direction control valve 40 is closed; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 all work.

Under this scheme, the condensation heat produced of freezing all enters environment (outdoor air or cooling water or soil etc.) by First Heat Exchanger 3, and the second heat exchanger 4, the 3rd heat exchanger 8 work under different evaporating temperatures, is user's refrigeration; Such as: in the air-conditioning system of independent temperature-humidity control, the second heat exchanger 4 for the production of high temperature chilled water, for meeting the sensible heat demand of air-conditioned room, the 3rd heat exchanger 8 for the production of cryogenic freezing water, for meeting the dehumidification of new wind.

Its workflow is: because flow direction control valve 40 during work is closed, enter the cold-producing medium of the 65 pipeline 65, be divided into independently two-way via the first cross valve 70 low pressure node 73, second cross valve 80 low pressure node 83; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node 74 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 64 pipeline 64; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 82, the 66 pipeline 66, first check valve the 21, the 69 pipeline 69 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 64 pipeline 64; Two-way after the 64 pipeline 64 mixes, more successively through First Heat Exchanger 3, first throttle mechanism 5, enters the 58 pipeline 58 and is divided into again two-way; The first via to commutate node 72, first cross valve 70 low pressure node the 73, the 65 pipeline the 65, the 68 pipeline 68 through the 52 pipeline 52, second throttle body 6, second heat exchanger the 4, the 61 pipeline 61, first cross valve 70 successively, gets back to again the second compressing mechanism 2 arrival end; Commutating node 84, second cross valve 80 low pressure node the 83, the 65 pipeline the 65, the 63 pipeline 63 through the 58 pipeline 58, the 3rd throttle mechanism 7, the 3rd heat exchanger the 8, the 67 pipeline 67, second cross valve 80 successively in second tunnel, gets back to again the first compressing mechanism 1 arrival end; Two-way cold-producing medium once more enters two compressor structures respectively and is compressed, and completes and once circulates.

(2) winter heating function

Under this scheme, First Heat Exchanger 3 is for draw heat from environment, and the second heat exchanger 4 is for being user's heating.

Scheme two: the first compressing mechanism 1, second compressing mechanism 2 all normally works; Flow direction control valve 40 is opened; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 all work.

Under this scheme, First Heat Exchanger 3 draw heat from environment, the second heat exchanger 4, the 3rd heat exchanger 8 work under same condensation temperature, are user's heating.

Its workflow is: the cold-producing medium entering the 65 pipeline 65 is divided into two-way; The first via is after the 68 pipeline 68, enter the second compressing mechanism 2 to be compressed, after discharging from second compressing mechanism 2 port of export, to commutate node the 72, the 61 pipeline 61, second heat exchanger 4, second throttle body the 6, the 52 pipeline 52 through the 60 pipeline 60, first cross valve 70 high voltage nodes 71, first cross valve 70 successively, enter the 58 pipeline 58; Second tunnel is after the 63 pipeline 63, enter the first compressing mechanism 1 to be compressed, after discharging from first compressing mechanism 1 port of export, to commutate node the 84, the 67 pipeline 67, the 3rd heat exchanger 8, the 3rd throttle mechanism 7 through the 62 pipeline 62, second cross valve 80 high voltage nodes 81, second cross valve 80 successively, also enter the 58 pipeline 58; Two-way after the 58 pipeline 58 mixes, then to commutate node 74, first cross valve 70 low pressure node 73 through first throttle mechanism 5, First Heat Exchanger the 3, the 64 pipeline 64, first cross valve 70 successively, enters the 65 pipeline 65 and is divided into two-way; The first via, through the 68 pipeline 68, gets back to again the second compressing mechanism 2 arrival end; The first compressing mechanism 1 arrival end, successively through flow direction control valve the 40, the 63 pipeline 63, is got back to again in second tunnel; Again enter two compressor structures respectively to be compressed, complete and once circulate.

Scheme three: the first compressing mechanism 1, second compressing mechanism 2 all normally works; Flow direction control valve 40 is opened; First Heat Exchanger 3, second heat exchanger 4, the 3rd heat exchanger 8 all work.

Under this scheme, First Heat Exchanger 3 draw heat from environment, the second heat exchanger 4, the 3rd heat exchanger 8 work under different condensation temperatures, are user's heating.Such as: the second heat exchanger 4 is for the production of low-temperature water heating, and the 3rd heat exchanger 8 is for the production of high-temperature-hot-water.

In the course of work of this programme, the first compressing mechanism 1, second compressing mechanism 2 can adopt variable conpacitance compressor, and the temperature of method to high/low temperature hot water exporting refrigerant flow by changing compressor controls respectively.Specifically, when the first compressing mechanism 1, second compressing mechanism 2 is frequency-changeable compressors, the second compressing mechanism 2 is controlled the low-temperature water heating temperature that the second heat exchanger 4 exports by the method changing its operating frequency; First compressing mechanism 1 is controlled the high-temperature-hot-water temperature that the 3rd heat exchanger 8 exports by the method changing its operating frequency.

In the course of work, 3rd throttle mechanism 7 is for controlling the pressure at expulsion of the first compressing mechanism 1, its concrete control method is as follows: export on the basis of high-temperature-hot-water temperature (that is: the setting value of controller setting) at the 3rd heat exchanger 8 expected, add a heat transfer temperature difference, as the saturation temperature value that the first compressing mechanism 1 pressure at expulsion expected is corresponding, the pressure at expulsion that the first compressing mechanism 1 is expected is determined according to this saturation temperature value, during work, controller is by the valve opening of adjustment the 3rd throttle mechanism 7, the pressure at expulsion of the first compressing mechanism 1 reality is controlled as desired value.Concrete control method is: when the pressure at expulsion of the first compressing mechanism 1 reality is greater than desired value, and when exceeding allowed band, then increase the valve opening of the 3rd throttle mechanism 7; When the pressure at expulsion of the first compressing mechanism 1 reality is less than desired value, and when exceeding allowed band, then reduce the valve opening of the 3rd throttle mechanism 7; When deviation between the pressure at expulsion and desired value of the first compressing mechanism 1 reality is in allowed band, then keep the valve opening of the 3rd throttle mechanism 7 constant.

(3) winter frost removing function

Under this function, the second heat exchanger 4 absorbs heat, for the defrost of First Heat Exchanger 3 from user.

During work, the first compressing mechanism 1 does not work, and the second compressing mechanism 2 normally works; Flow direction control valve 40 is opened; First Heat Exchanger 3, second heat exchanger 4 works, and the 3rd heat exchanger 8 does not work.First throttle mechanism 5 standard-sized sheet, second throttle body 6 normally works, and the 3rd throttle mechanism 7 cuts out.Under this function, its workflow is identical with the scheme one under the present embodiment refrigerating function.

The installation method of flow direction control valve 40 in scheme shown in embodiment 3 Fig. 3 and effect at work are also applicable to embodiment 1 Fig. 1.When increasing a flow direction control valve 40 in scheme shown in embodiment 1 Fig. 1, now, the concrete mounting means of flow direction control valve 40 in scheme shown in Fig. 1 is: flow direction control valve 40 is arranged on the 65 pipeline 65, and flow direction control valve 40 one end is connected with the 63 pipeline 63, flow direction control valve 40 other end is connected with the 51 pipeline 51 with the 68 pipeline 68.

For scheme shown in embodiment 1 Fig. 1, when it is in the scheme six times work of separate refrigeration function, and when flow direction control valve 40 is closed, as shown in Figure 1, in air conditioner unit 10, the second heat exchanger 4, the 3rd heat exchanger 8 can adopt different evaporating temperatures to carry out work respectively; That is: the second heat exchanger 4 first adopts the intake air of higher evaporating temperature to air conditioner unit 10 cool and dehumidify; Then, the 3rd heat exchanger 8 adopts lower evaporating temperature to continue cool the air from the second heat exchanger 4 and dehumidify again.Thus improve operating efficiency of the present invention, reach energy-conservation object.

The mounting means of flow direction control valve 40 in scheme shown in embodiment 1 Fig. 1 and method of work and effect are also applicable to the change programme of scheme shown in the Fig. 1 described in embodiment 1.

The installation method of flow direction control valve 40 in scheme shown in embodiment 3 Fig. 3 and effect at work are equally also applicable to scheme shown in embodiment 2 Fig. 2.Now, the concrete mounting means of flow direction control valve 40 in scheme shown in Fig. 2 is: flow direction control valve 40 is arranged on the 65 pipeline 65, and flow direction control valve 40 one end is connected with the 63 pipeline 63, flow direction control valve 40 other end is connected with the 68 pipeline 68.

For scheme shown in embodiment 2 Fig. 2, when it is in the scheme six times work of separate refrigeration function, and when flow direction control valve 40 is closed, as shown in Figure 2, in air conditioner unit 10, the second heat exchanger 4, the 3rd heat exchanger 8 adopt different evaporating temperatures to carry out work respectively; That is: the second heat exchanger 4 first adopts the intake air of higher evaporating temperature to air conditioner unit 10 cool and dehumidify; Then, the 3rd heat exchanger 8 adopts lower evaporating temperature to continue cool the air from the second heat exchanger 4 and dehumidify again.Thus improve operating efficiency of the present invention, reach energy-conservation object.

In addition, flow direction control valve 40 also has following mounting means in scheme shown in embodiment 1 Fig. 1, that is: flow direction control valve 40 is arranged on the 65 pipeline 65, and flow direction control valve 40 one end is connected with the 51 pipeline 51 with the 63 pipeline 63, flow direction control valve 40 other end is connected with the 68 pipeline 68.Under this scheme, work under scheme shown in Fig. 1 dehumidifies double heating function in the winter time, and flow direction control valve 40 is when closing, first compressing mechanism 1 is by changing the method for its operating frequency, the wet-bulb temperature of air handled by air conditioner unit 10 is controlled, second compressing mechanism 2, by changing the method for its operating frequency, controls the dry-bulb temperature of air handled by air conditioner unit 10.The workflow that scheme shown in cold-producing medium workflow under this scheme with embodiment 1 Fig. 1 dehumidifies under double heating function is in the winter time substantially identical, unique difference is: on the 65 pipeline 65, because flow direction control valve 40 is closed, therefore the 65 pipeline 65 has been divided into two separate parts.When working under other function of this scheme, flow direction control valve 40 is in opening.Flow direction control valve 40 the above mounting means in scheme shown in embodiment 1 Fig. 1, is also applicable to the change programme of scheme shown in the Fig. 1 described in embodiment 1.

Embodiment 4

Shown in embodiment 1 Fig. 1, scheme is when reality uses, and has following further improvement project: increase a liquid reservoir 50 in systems in which.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 applicable to scheme described in all embodiments of the present invention.

On the basis of embodiment 4, can be improved further all embodiments of the present invention by increasing the 4th throttle mechanism 9, now, the method for attachment of the 4th throttle mechanism 9 in system (that is: air conditioner refrigerating of the present invention is standby) has following five kinds of modes:

1) the 4th throttle mechanism 9 one end is connected with liquid reservoir 50, and the 4th throttle mechanism 9 other end is connected with the second vapor injection mouth of the first compressing mechanism 1.2) the 4th throttle mechanism 9 one end is connected with liquid reservoir 50, and the 4th throttle mechanism 9 other end is connected with the second vapor injection mouth of the second compressing mechanism 2.3) the 4th throttle mechanism 9 one end is connected with liquid reservoir 50, and the 4th throttle mechanism 9 other end is connected with the 65 pipeline 65.4) the 4th throttle mechanism 9 one end is connected with liquid reservoir 50, and the 4th throttle mechanism 9 other end is connected with the 63 pipeline 63.5) the 4th throttle mechanism 9 one end is connected with liquid reservoir 50, and the 4th throttle mechanism 9 other end is connected with the 68 pipeline 68.

In the scheme of the above-mentioned all embodiments of the present invention, 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.Flow direction control valve 40 can adopt magnetic valve, or other has the flow control device of turn-off function.

In the scheme of the above-mentioned all embodiments of the present invention, 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 present invention, 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 also can be the compressor bank of at least one variable conpacitance compressor and at least one constant speed compressor composition.

In the scheme of the above-mentioned all embodiments of the present invention, 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 present invention, in first throttle mechanism 5, second throttle body 6, the 3rd throttle mechanism 7, the 4th throttle mechanism 9 one or more, 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 present invention, described all pipelines are all copper pipes.

Claims

1. an operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7), the first check valve (21) and the second check valve (22), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second check valve (22) arrival end, second check valve (22) port of export, 59 pipeline (59) is connected with the 67 pipeline (67), 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 by the 65 pipeline (65) between the low pressure node (73) of the 51 pipeline (51) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80).

2. an operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7), the first check valve (21) and the second check valve (22), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second check valve (22) arrival end, second check valve (22) port of export, 59 pipeline (59) is connected with the 67 pipeline (67), 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 63 pipeline (63) by the 51 pipeline (51).

3. an operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7), the first check valve (21) and the second check valve (22), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second check valve (22) arrival end, second check valve (22) port of export, 59 pipeline (59) is connected with the 67 pipeline (67), 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 68 pipeline (68) by the 51 pipeline (51).

4. the operation of air conditioning systems according to claim arbitrary in claims 1 to 3, it is characterized in that a flow direction control valve (40) is arranged on the 65 pipeline (65), and described flow direction control valve (40) one end is connected with the 63 pipeline (63), described flow direction control valve (40) other end is connected with the 51 pipeline (51) with the 68 pipeline (68).

5. the operation of air conditioning systems according to claim arbitrary in claims 1 to 3, it is characterized in that a flow direction control valve (40) is arranged on the 65 pipeline (65), and described flow direction control valve (40) one end is connected with the 51 pipeline (51) with the 63 pipeline (63), described flow direction control valve (40) other end is connected with the 68 pipeline (68).

6. an operation of air conditioning systems, comprise the first compressing mechanism (1), the first cross valve (70), the second cross valve (80), First Heat Exchanger (3), the second heat exchanger (4), the 3rd heat exchanger (8), first throttle mechanism (5), second throttle body (6), the 3rd throttle mechanism (7) and the first check valve (21), it is characterized in that: this operation of air conditioning systems also comprises the second compressing mechanism (2), the low pressure node (73) of described first cross valve (70) is connected by the low pressure node (83) of the 65 pipeline (65) with described second cross valve (80), 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, the 65 pipeline (65) between the low pressure node (73) of the 68 pipeline (68) and described first cross valve (70) and the low pressure node (83) of the second cross valve (80) is connected, 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 also connected with the 65 pipeline (65) between the low pressure node (73) of described first cross valve (70) and the low pressure node (83) of the second cross valve (80), any one commutation node (84) in described second cross valve (80) two commutation node 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 described first cross valve (70) two any one commutation in node node (74) that commutates is connected, another commutation node (82) of described second cross valve (80) is successively by the 66 pipeline (66), first check valve (21) arrival end, first check valve (21) port of export, 69 pipeline (69) is connected with the 64 pipeline (64), another commutation node (72) of described first cross valve (70) is successively by the 61 pipeline (61), second heat exchanger (4), 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).

7. operation of air conditioning systems according to claim 6, it is characterized in that a flow direction control valve (40) is arranged on the 65 pipeline (65), and described flow direction control valve (40) one end is connected with the 63 pipeline (63), described flow direction control valve (40) other end is connected with the 68 pipeline (68).

8., according to the operation of air conditioning systems in claim 1,2,3,6 described in arbitrary claim, any one that it is characterized in that in described first compressing mechanism (1) and the second compressing mechanism (2) is variable conpacitance compressor.

9., according to the operation of air conditioning systems in claim 4 and 5 described in arbitrary claim, it is characterized in that described flow direction control valve (40) is magnetic valve.

10. operation of air conditioning systems according to claim 7, is characterized in that described flow direction control valve (40) is magnetic valve.