CN103791578A

CN103791578A - Air-conditioning and refrigeration equipment

Info

Publication number: CN103791578A
Application number: CN201410060489.1A
Authority: CN
Inventors: 刘雄; 杨艳芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-17
Filing date: 2014-02-17
Publication date: 2014-05-14
Also published as: CN104197580B; CN204006791U; CN104197580A

Abstract

The invention discloses air-conditioning and refrigeration equipment. The air-conditioning and refrigeration equipment comprises a compressing mechanism, a user side heat exchanger, a heat source side heat exchanger, a heater, a first throttle mechanism, a second throttle mechanism, a first flow direction control valve and a second flow direction control valve. The outlet end of the heater passes through the second throttle mechanism and a sixty-fifth pipe in sequence and is connected with either of two connection ports of the heat source side heat exchanger. The other connection port of the heat source side heat exchanger is connected with either of two connection end points of the first flow direction control valve through a seventieth pipe. One end of the second flow direction control valve is connected with a pipe between the outlet end of the heater and the second throttle mechanism, and the other end of the second flow direction control valve is connected with the seventieth pipe. The inlet end of the first throttle mechanism is connected with the sixty-fifth pipe through a sixty-sixth pipe. The air-conditioning and refrigeration equipment is simple in structure, reliable in work, low in cost and capable of achieving multiple functions such as refrigeration, heating and hot water production.

Description

Operation of air conditioning systems

Technical field

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

Background technology

The present patent application people was on 02 01st, 2012 patent of invention disclosed, application number is 201110315796.6, and the claim 1 of the patent of invention disclosed on 04 10th, 2013, application number is 201210028411.2 proposed a kind of operation of air conditioning systems scheme, its system forms as shown in Figure 6.Description from foregoing invention patent: the scheme shown in Fig. 6 can realize several functions, the occasion of be specially adapted to there is refrigeration the whole year, domestic hot-water's demand is warmed up in confession.But from the description of Fig. 6 and above-mentioned two patents of invention, in running, there is following defect in the scheme shown in Fig. 6:

1) the refrigerant superheat steam of discharging from compressing mechanism 1 enters the 3rd heat exchanger 8, conventionally only can emit part heat, therefore, may be all gas from the 3rd heat exchanger 8 cold-producing medium out, or gas-fluid two-phase mixture, so in the time that these cold-producing mediums pass through the second throttle mechanism 7, can produce larger pressure drop (that is: circulation resistance), therefore can cause adverse effect to the cycle performance of operation of air conditioning systems.

2) because in the course of work, the second heat exchanger 4 can be played the part of respectively the dual role of condenser and evaporimeter, therefore, for example, in the time that the second heat exchanger 4 is selected the heat exchanger of some type (: plate type heat exchanger), in order to improve the heat exchange property of heat exchanger, reduce cold-producing medium by the drag losses of heat exchanger, avoid in heat transfer process, gas-liquid between refrigerant gas and liquid is impacted, and generation noise, therefore in the time that the second heat exchanger 4 is played the part of the role of condenser, can require cold-producing medium upper entering and lower leaving; In the time that the second heat exchanger 4 is played the part of the role of evaporimeter, can require cold-producing medium bottom in and top out; And the scheme shown in Fig. 6 can not realize above-mentioned requirements.

Similarly problem is also present in following patent and patent application,

The present patent application people was on 07 11st, 2012 patents of invention disclosed, application number is 201210057854.4;

The present patent application people was on 01 02nd, 2013 patent of invention disclosed, application number is 201110462200.5;

The patent of invention that the present patent application people obtained the authorization on 04 11st, 2012, the patent No. is 201010271025.7;

The patent of invention that the present patent application people obtained the authorization on 05 23rd, 2012, the patent No. is 201010508119.1;

The patent of invention that the present patent application people obtained the authorization on 07 18th, 2012, the patent No. is 201110009021.6.

Summary of the invention

The object of this invention is to provide a kind of circulation resistance that can reduce in the course of the work cold-producing medium; Make heat source side heat exchanger in the time using as condenser, cold-producing medium can be realized upper entering and lower leaving, and heat source side heat exchanger is in the time using as evaporimeter simultaneously, and cold-producing medium can be realized bottom in and top out; And can in whole year operation process, can realize the operation of air conditioning systems of several functions.

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

A kind of operation of air conditioning systems, at least comprise compressing mechanism (1), user's side heat exchanger (3), heat source side heat exchanger (4), heater (8), first throttle mechanism (5), the second throttle mechanism (7) and the first flow direction control valve (41), it is characterized in that: this operation of air conditioning systems also comprises the second flow direction control valve (42), the port of export of described heater (8) is successively through the second throttle mechanism (7), the 65 pipeline (65), be connected with any one connectivity port in (4) two connectivity ports of described heat source side heat exchanger, another connectivity port of described heat source side heat exchanger (4) is connected by any one connection end point in (41) two connection end points of the 70 pipeline (70) and the first flow direction control valve, described the second flow direction control valve (42) one end is connected with the pipeline between heater (8) port of export and the second throttle mechanism (7), described the second flow direction control valve (42) other end is connected with the 70 pipeline (70), the arrival end of described first throttle mechanism (5) is connected with the 65 pipeline (65) by the 66 pipeline (66).

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

1., while operation, can reduce the circulation resistance of cold-producing medium; Improve the heat exchange property of heat source side heat exchanger; Avoid in the heat transfer process of heat source side heat exchanger, the gas-liquid between refrigerant gas and liquid is impacted, and avoids producing noise in heat source side heat exchanger;

2. can realize the several functions such as refrigeration, heating, supply domestic hot-water;

3. work is more stable, reliable;

4. the present invention is applicable to industry and civilian operation of air conditioning systems, is specially adapted to refrigeration, heating, supply domestic hot-water to have the occasion of requirement.

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 representations;

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

Fig. 4 is the embodiment of the present invention 4 structural representations;

Fig. 5 is the embodiment of the present invention 5 structural representations;

Fig. 6 is prior art structural representation;

Fig. 7 is the water system structural representation matching with the embodiment of the present invention 1 to 3;

Fig. 8 is the water system structural representation matching with the embodiment of the present invention 5.

The specific embodiment

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

Embodiment 1

As shown in Figure 1, whole operation of air conditioning systems comprises following part: compressing mechanism 1, first throttle mechanism 5, the second throttle mechanism 7, user's side heat exchanger 3, heat source side heat exchanger 4, heater 8, the first flow direction control valve 41 and the second flow direction control valve 42; First throttle mechanism 5, the second throttle mechanism 7 are all electric expansion valve; The first flow direction control valve 41 and the second flow direction control valve 42 are magnetic valve.

The connected mode of the each part of above operation of air conditioning systems is as follows:

The port of export of heater 8 is successively through the second throttle mechanism 7, the 65 pipeline 65, be connected with any one connectivity port in 4 two connectivity ports of heat source side heat exchanger, another connectivity port of heat source side heat exchanger 4 is connected by any one connection end point in 41 two connection end points of the 70 pipeline 70 and the first flow direction control valve, second flow direction control valve 42 one end are connected with the pipeline between heater 8 ports of export and the second throttle mechanism 7, second flow direction control valve 42 other ends are connected with the 70 pipeline 70, the arrival end of first throttle mechanism 5 is connected with the 65 pipeline 65 by the 66 pipeline 66,

The arrival end of heater 8, successively through the 60 pipeline 60, compressing mechanism 1 port of export, compressing mechanism 1 arrival end, the 63 pipeline 63, user's side heat exchanger 3, is connected with the port of export of first throttle mechanism 5; Another connection end point of the first flow direction control valve 41 is connected with the 63 pipeline 63 between compressing mechanism 1 arrival end and user's side heat exchanger 3 by the 61 pipeline 61.

This operation of air conditioning systems, in whole year operation process, can realize several functions.Summer, while work, user's side heat exchanger 3 was as evaporimeter, for the production of chilled water or cooling-air; The partial condensation heat that heater 8 produces for reclaiming process of refrigerastion, produces hot water; As shown in Figure 7, the hot water that heater 8 is produced is again by hot water heater 30 productive life hot water, and 50 in Fig. 7 is hot-water circulating pump; Heat source side heat exchanger 4, as condenser, distributes the condensation heat of not recycling in process of refrigerastion to environment.

When transition season work, user's side heat exchanger 3 is not worked; Heat source side heat exchanger 4, as evaporimeter, for absorbing heat from environment, then is produced hot water by heater 8, and then by the hot water heater 30 productive life hot water in Fig. 7.

Winter, while work, user's side heat exchanger 3 was not also worked; Heat source side heat exchanger 4, as evaporimeter, for absorbing heat from environment, then is produced hot water by heater 8; As shown in Figure 7, the water side heat face of producing is for the production of domestic hot-water (utilizing hot water heater 30 to produce), on the other hand for heating (shown in Fig. 7,40 is heating system), when work, for regulating by electric T-shaped valve 80 for the heat that adds of warm productive life hot water.

Workflow under each function is as described below respectively.

(1) the double heat recovery function of refrigeration

Under this function, user's side heat exchanger 3 is as evaporimeter, for the production of chilled water or cooling-air; The partial condensation heat that heater 8 produces for reclaiming process of refrigerastion, productive life hot water; Heat source side heat exchanger 4, as condenser, distributes the condensation heat of not recycling in process of refrigerastion to environment.Under this function, cold-producing medium is with the mode of the upper entering and lower leaving heat source side heat exchanger 4 of flowing through.

When work, first throttle mechanism 5 normally works, and the second throttle mechanism 7 cuts out; The first flow direction control valve 41 is closed, the second flow direction control valve 42 standard-sized sheets.

Its workflow is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through arrival end, the port of export of heater 8, the second flow direction control valve 42, heat source side heat exchanger the 4, the 65 pipeline the 65, the 66 pipeline 66, first throttle mechanism 5 arrival ends, first throttle mechanism 5 ports of export, user's side heat exchanger the 3, the 63 pipeline 63 of the 60 pipeline 60, heater 8, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(2) heat-production functions

Under this function, user's side heat exchanger 3 is not worked; Heat source side heat exchanger 4 is as evaporimeter, for absorbing heat from environment; In the time that transition season is worked, heater 8 is for the production of domestic hot-water; In the winter time, heater 8 is for the production of domestic hot-water and heating.Under this function, cold-producing medium is with the mode of the bottom in and top out heat source side heat exchanger 4 of flowing through.

When work, first throttle mechanism 5 closes, and the second throttle mechanism 7 is normally worked; The first flow direction control valve 41 standard-sized sheets, the second flow direction control valve 42 is closed.

Its workflow is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through arrival end, the port of export of heater 8, the second throttle mechanism the 7, the 65 pipeline 65, heat source side heat exchanger the 4, the 70 pipeline 70, first flow direction control valve the 41, the 61 pipeline the 61, the 63 pipeline 63 of the 60 pipeline 60, heater 8, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(3) defrost function

Under this function, user's side heat exchanger 3 is for from indoor draw heat, the heat of drawing, and in heat source side heat exchanger 4, for defrosting, heater 8 is not worked, and cold-producing medium is only by heater 8.Under this function, cold-producing medium is with the mode of the upper entering and lower leaving heat source side heat exchanger 4 of flowing through.

Embodiment 2

As shown in Figure 2, scheme shown in Fig. 2 with the difference of scheme shown in Fig. 1 is: compared with scheme shown in Fig. 1, in the scheme shown in Fig. 2, a cross valve 2, the second check valve 22 and a capillary 12 are increased, meanwhile, with the first flow direction control valve 41 in scheme shown in the first check valve 21 alternate figures 1.

The connected mode of the each part of operation of air conditioning systems shown in Fig. 2 is as follows:

The port of export of heater 8 is successively through the second throttle mechanism 7, the 65 pipeline 65, be connected with any one connectivity port in 4 two connectivity ports of heat source side heat exchanger, another connectivity port of heat source side heat exchanger 4 is connected by any one connection end point in 41 two connection end points of the 70 pipeline 70 and the first flow direction control valve, second flow direction control valve 42 one end are connected with the pipeline between heater 8 ports of export and the second throttle mechanism 7, second flow direction control valve 42 other ends are connected with the 70 pipeline 70, first throttle mechanism 5 arrival ends are connected with the 65 pipeline 65 by the 66 pipeline 66,

The arrival end of heater 8 is successively through the 60 pipeline 60, compressing mechanism 1 port of export, compressing mechanism 1 arrival end, the 63 pipeline 63, user's side heat exchanger 3, is connected with first throttle mechanism 5 ports of export; Another connection end point of the first flow direction control valve 41 is connected by any one the commutation node 74 in 2 two commutation nodes of the 61 pipeline 61 and cross valve;

The low pressure node 73 of cross valve 2 is connected with the 63 pipeline 63 between compressing mechanism 1 arrival end and user's side heat exchanger 3 by the 83 pipeline 83;

The high pressure node 71 of cross valve 2 is connected by the 60 pipeline 60 between arrival end and compressing mechanism 1 port of export of the 82 pipeline 82 and heater 8;

Another commutation node 72 of cross valve 2 is successively through the 64 pipeline 64, the second check valve 22 arrival ends, second check valve 22 ports of export, also with arrival end and compressing mechanism 1 port of export of heater 8 between the 60 pipeline 60 be connected; Capillary 12 one end are connected with the 61 pipeline 61, and capillary 12 other ends are connected with the 70 pipeline 70.

In the time substituting the first flow direction control valve 41 with the first check valve 21, the connected mode of the first check valve 21 in scheme shown in Fig. 2 is: first check valve 21 ports of export are connected with the 61 pipeline 61, and the first check valve 21 arrival ends are connected with the 70 pipeline 70.

This operation of air conditioning systems, in whole year operation process, also can realize several functions.Summer, while work, user's side heat exchanger 3 was as evaporimeter, for the production of chilled water or cooling-air; The partial condensation heat that heater 8 produces for reclaiming process of refrigerastion, produces hot water; As shown in Figure 7, the hot water that heater 8 is produced is again by hot water heater 30 productive life hot water, and 50 in Fig. 7 is hot-water circulating pump; Heat source side heat exchanger 4, as condenser, distributes the condensation heat of not recycling in process of refrigerastion to environment.

Workflow under each function is as described below respectively.

(1) the double heat recovery function of refrigeration

When work, first throttle mechanism 5 normally works, and the second throttle mechanism 7 cuts out; The first flow direction control valve 41 is closed, the second flow direction control valve 42 standard-sized sheets; The high pressure node 71 of cross valve 2 communicates with commutation node 74, and the low pressure node 73 of cross valve 2 communicates with commutation node 72.

Workflow under this function is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through arrival end, the port of export of heater 8, the second flow direction control valve 42, heat source side heat exchanger the 4, the 65 pipeline the 65, the 66 pipeline 66, first throttle mechanism 5 arrival ends, first throttle mechanism 5 ports of export, user's side heat exchanger the 3, the 63 pipeline 63 of the 60 pipeline 60, heater 8, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

Under this function, there is sub-fraction cold-producing medium to enter the 70 pipeline 70 by capillary 12, therefore can avoid in the course of work under this function, the high-pressure side of cross valve 2 produces and gathers refrigerant liquid.

(2) heat-production functions

When work, first throttle mechanism 5 closes, and the second throttle mechanism 7 is normally worked; The first flow direction control valve 41 standard-sized sheets, the second flow direction control valve 42 is closed; The high pressure node 71 of cross valve 2 communicates with commutation node 72, and the low pressure node 73 of cross valve 2 communicates with commutation node 74.

Workflow under this function is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the port of export of the arrival end of the 60 pipeline 60, heater 8, heater 8, the second throttle mechanism the 7, the 65 pipeline 65, heat source side heat exchanger the 4, the 70 pipeline 70, the first flow direction control valve the 41, the 61 pipeline 61, the commutation node 74 of cross valve 2, low pressure node the 73, the 83 pipeline the 83, the 63 pipeline 63 of cross valve 2, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(3) defrost function

Embodiment 3

As shown in Figure 3, whole operation of air conditioning systems, except comprising all constituents of scheme shown in embodiment 1 Fig. 1, has also increased by 22, one the 3rd check valves 23 of 2, one the second check valves of a cross valve; In the course of work, can substitute the first flow direction control valve 41 with first check valve 21 in addition.

The connected mode of the each part of operation of air conditioning systems shown in Fig. 3 is as follows:

The arrival end of heater 8 is successively through second check valve 22 ports of export, the second check valve 22 arrival ends, the 64 pipeline 64, be connected with any one the commutation node 72 in 2 two commutation nodes of cross valve, another commutation node 74 of cross valve 2 is connected with another connection end point of the first flow direction control valve 41 by the 61 pipeline 61, the 3rd check valve 23 arrival ends are connected with the 61 pipeline 61, the 3rd check valve 23 ports of export are connected with the pipeline between heater 8 arrival ends and second check valve 22 ports of export, the high pressure node 71 of cross valve 2 is successively through the 60 pipeline 60, compressing mechanism 1 port of export, compressing mechanism 1 arrival end, the 63 pipeline 63, be connected with the low pressure node 73 of cross valve 2, user's side heat exchanger 3 one end are connected with first throttle mechanism 5 ports of export, the other end of user's side heat exchanger 3 is connected with the 63 pipeline 63 between compressing mechanism 1 arrival end and the low pressure node 73 of cross valve 2 by the 67 pipeline 67.

In the time substituting the first flow direction control valve 41 with the first check valve 21, the connected mode of the first check valve 21 in scheme shown in Fig. 3 is: first check valve 21 ports of export are connected with the 61 pipeline 61, and the first check valve 21 arrival ends are connected with the 70 pipeline 70.

Workflow under each function is as described below respectively.

(1) the double heat recovery function of refrigeration

Workflow under this function is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 74 of cross valve 2, the 61 pipeline 61, the 3rd check valve 23 arrival ends, the 3rd check valve 23 ports of export, the arrival end of heater 8, the port of export of heater 8, the second flow direction control valve 42, heat source side heat exchanger 4, the 65 pipeline 65, the 66 pipeline 66, first throttle mechanism 5 arrival ends, first throttle mechanism 5 ports of export, user's side heat exchanger 3, the 67 pipeline 67, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(2) heat-production functions

Under this function, user's side heat exchanger 3 is not worked; Heat source side heat exchanger 4 is as evaporimeter, for absorbing heat from environment; In the time that transition season is worked, heater 8 is for the production of hot water, the hot water of producing, then by the hot water heater 30 productive life hot water in Fig. 7; In the winter time, the hot water that heater 8 is produced is respectively used to productive life hot water and heating (as shown in Figure 7).Under this function, cold-producing medium is with the mode of the bottom in and top out heat source side heat exchanger 4 of flowing through.

Workflow under this function is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 72 of cross valve 2, the 64 pipeline 64, the second check valve 22 arrival ends, second check valve 22 ports of export, the arrival end of heater 8, the port of export of heater 8, the second throttle mechanism 7, the 65 pipeline 65, heat source side heat exchanger 4, the 70 pipeline 70, the first flow direction control valve 41, the 61 pipeline 61, the commutation node 74 of cross valve 2, the low pressure node 73 of cross valve 2, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(3) defrost function

Embodiment 4

As shown in Figure 4, whole operation of air conditioning systems, except comprising all constituents of scheme shown in embodiment 1 Fig. 1, has also increased by 22, one the 3rd check valves 23 of 2, one the second check valves of a cross valve; In the course of work, can substitute the first flow direction control valve 41 with first check valve 21 in addition.

The connected mode of the each part of operation of air conditioning systems shown in Fig. 4 is as follows:

First throttle mechanism 5 ports of export pass through user's side heat exchanger the 3, the 64 pipeline 64 successively, are connected with any one the commutation node 72 in 2 two commutation nodes of cross valve;

The arrival end of heater 8 is connected with the 64 pipeline 64 through second check valve 22 ports of export, the second check valve 22 arrival ends, the 68 pipeline 68 successively;

Another commutation node 74 of cross valve 2 is connected with another connection end point of the first flow direction control valve 41 by the 61 pipeline 61; The 3rd check valve 23 arrival ends are connected with the 61 pipeline 61, and the 3rd check valve 23 ports of export are connected with the pipeline between heater 8 arrival ends and second check valve 22 ports of export;

The high pressure node 71 of cross valve 2, successively through the 60 pipeline 60, compressing mechanism 1 port of export, compressing mechanism 1 arrival end, the 63 pipeline 63, is connected with the low pressure node 73 of cross valve 2.

In the time substituting the first flow direction control valve 41 with the first check valve 21, the connected mode of the first check valve 21 in scheme shown in Fig. 4 is: first check valve 21 ports of export are connected with the 61 pipeline 61, and the first check valve 21 arrival ends are connected with the 70 pipeline 70.

This operation of air conditioning systems, in whole year operation process, also can realize several functions.Summer, while work, user's side heat exchanger 3 was as evaporimeter, for the production of chilled water or cooling-air; The partial condensation heat that heater 8 produces for reclaiming process of refrigerastion, productive life hot water; Heat source side heat exchanger 4, as condenser, distributes the condensation heat of not recycling in process of refrigerastion to environment.

When transition season work, user's side heat exchanger 3 is not worked; Heat source side heat exchanger 4, as evaporimeter, for absorbing heat from environment, then passes through heater 8 productive life hot water.

While work, user's side heat exchanger 3, as condenser, for heating, was produced heating hot water or added hot-air winter; Heater 8 is also as condenser, for the production of domestic hot-water; Heat source side heat exchanger 4 is as evaporimeter, for from environment draw heat.

Workflow under each function is as described below respectively.

(1) the double heat recovery function of refrigeration

Workflow under this function is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 74 of cross valve 2, the 61 pipeline 61, the 3rd check valve 23 arrival ends, the 3rd check valve 23 ports of export, the arrival end of heater 8, the port of export of heater 8, the second flow direction control valve 42, heat source side heat exchanger 4, the 65 pipeline 65, the 66 pipeline 66, first throttle mechanism 5 arrival ends, first throttle mechanism 5 ports of export, user's side heat exchanger 3, the 64 pipeline 64, the commutation node 72 of cross valve 2, the low pressure node 73 of cross valve 2, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(2) independent productive life hot water function

Under this function, user's side heat exchanger 3 is not worked; Heat source side heat exchanger 4 is as evaporimeter, for absorbing heat from environment; Heater 8 is for the production of domestic hot-water.Under this function, cold-producing medium is with the mode of the bottom in and top out heat source side heat exchanger 4 of flowing through.

Workflow under this function is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 72 of cross valve 2, the 64 pipeline 64, the 68 pipeline 68, the second check valve 22 arrival ends, second check valve 22 ports of export, the arrival end of heater 8, the port of export of heater 8, the second throttle mechanism 7, the 65 pipeline 65, heat source side heat exchanger 4, the 70 pipeline 70, the first flow direction control valve 41, the 61 pipeline 61, the commutation node 74 of cross valve 2, the low pressure node 73 of cross valve 2, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(3) independent heating function

Under this function, user's side heat exchanger 3, for heating, is produced heating hot water or adds hot-air; Heat source side heat exchanger 4 is as evaporimeter, for absorbing heat from environment; Heater 8 is not worked.Under this function, cold-producing medium is with the mode of the bottom in and top out heat source side heat exchanger 4 of flowing through.

When work, first throttle mechanism 5 normally works, and the second throttle mechanism 7 cuts out; The first flow direction control valve 41 standard-sized sheets, the second flow direction control valve 42 is closed.

Workflow under this function is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 72 of cross valve 2, the 64 pipeline 64, user's side heat exchanger 3, first throttle mechanism 5 ports of export, first throttle mechanism 5 arrival ends, the 66 pipeline 66, the 65 pipeline 65, heat source side heat exchanger 4, the 70 pipeline 70, the first flow direction control valve 41, the 61 pipeline 61, the commutation node 74 of cross valve 2, the low pressure node 73 of cross valve 2, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(4) simultaneously for warm productive life hot water function

Under this function, user's side heat exchanger 3, for heating, is produced heating hot water or adds hot-air; Heater 8 is for the production of domestic hot-water; Heat source side heat exchanger 4 is as evaporimeter, for absorbing heat from environment.Under this function, cold-producing medium is with the mode of the bottom in and top out heat source side heat exchanger 4 of flowing through.

When work, first throttle mechanism 5, the second throttle mechanism 7 are normally worked; The first flow direction control valve 41 standard-sized sheets, the second flow direction control valve 42 is closed.

Workflow under this function is: cold-producing medium, from compressing mechanism 1 port of export is discharged, successively through the high pressure node 71 of the 60 pipeline 60, cross valve 2, the commutation node 72 of cross valve 2, enters the 64 pipeline 64 and is divided into two-way; The first via is passed through user's side heat exchanger 3, first throttle mechanism 5 ports of export, first throttle mechanism 5 arrival ends, the 66 pipeline 66 successively, enters the 65 pipeline 65; The second tunnel through the 68 pipeline 68, the second check valve 22 arrival ends, second check valve 22 ports of export, the arrival end of heater 8, the port of export of heater 8, the second throttle mechanism 7, also enters the 65 pipeline 65 successively; Two-way is after the 65 pipeline 65 mixes, pass through successively again heat source side heat exchanger the 4, the 70 pipeline 70, the first flow direction control valve the 41, the 61 pipeline 61, the commutation node 74 of cross valve 2, low pressure node the 73, the 63 pipeline 63 of cross valve 2, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

(5) defrost function

Embodiment 5

As shown in Figure 5, whole operation of air conditioning systems, except comprising all constituents of scheme shown in embodiment 1 Fig. 1, has also increased by 22, one the 3rd check valves 23 of 2, one the second check valves of a cross valve; In the course of work, can substitute the first flow direction control valve 41 with first check valve 21 in addition.

The connected mode of the each part of operation of air conditioning systems shown in Fig. 5 is as follows:

The port of export of first throttle mechanism 5 passes through user's side heat exchanger the 3, the 64 pipeline 64 successively, is connected with any one the commutation node 72 in 2 two commutation nodes of cross valve;

The arrival end of heater 8, successively through second check valve 22 ports of export, the second check valve 22 arrival ends, the 68 pipeline 68, is connected with the pipeline between first throttle mechanism 5 ports of export and user's side heat exchanger 3;

In the time substituting the first flow direction control valve 41 with the first check valve 21, the connected mode of the first check valve 21 in scheme shown in Fig. 5 is: first check valve 21 ports of export are connected with the 61 pipeline 61, and the first check valve 21 arrival ends are connected with the 70 pipeline 70.

This operation of air conditioning systems, in whole year operation process, also can realize several functions.When work, user's side heat exchanger 3 is cold-producing medium-water-to-water heat exchangers, and summer, other season was for the production of hot water for the production of chilled water; Heat source side heat exchanger 4 both can be used as condenser, in environment, distributed the condensation heat that refrigeration produces, and also can be used as evaporimeter, absorbed heat from environment; Heater 8 is also a cold-producing medium-water-to-water heat exchanger, is used to the whole year user to produce hot water.

The water system matching with operation of air conditioning systems shown in the present embodiment Fig. 5, as shown in Figure 8.Water system of air-conditioning refrigeration equipment shown in Fig. 8 comprises following part: user's side heat exchanger 3 of operation of air conditioning systems, the heater 8 of operation of air conditioning systems, hot water heater 30, hot-water circulating pump 50, air conditioner water circulating pump 51, air-conditioning equipment 100, the first non-return valve 109, the second non-return valve 110, the first water flow control valve 121, the second water flow control valve 122, the 3rd water flow control valve 123.

Water system of air-conditioning refrigeration equipment shown in operation of air conditioning systems shown in Fig. 5 and associated Fig. 8, in the summer course of work, the chilled water that utilizes user's side heat exchanger 3 to produce, be user's cooling by air-conditioning equipment 100, the condensation heat that refrigeration produces is in the mode of recuperation of heat, produce hot water by heater 8, the hot water of producing by hot water heater 30 productive life hot water, is not entered in surrounding environment by heat source side heat exchanger 4 by the condensation heat of recuperation of heat again; In the course of work of transition season, heat source side heat exchanger 4 draw heat from surrounding environment, the heat of drawing is produced hot water by user's side heat exchanger 3 and heater 8, and the hot water of producing is again by hot water heater 30 productive life hot water; In the winter time in the course of work, heat source side heat exchanger 4 draw heat from surrounding environment, the heat of drawing is produced hot water by user's side heat exchanger 3 and heater 8, a hot water part of producing is again by hot water heater 30 productive life hot water, and another part is user's heating by air-conditioning equipment 100.

The workflow of Water system of air-conditioning refrigeration equipment shown in operation of air conditioning systems shown in Fig. 5 and associated Fig. 8 in the time realizing each function is as described below respectively.

(1) the double heat recovery function of refrigeration

As shown in Fig. 5 and 8, under this function, heater 8 utilizes the partial condensation heat that refrigeration produces to produce hot water, and the hot water of producing is by hot water heater 30 productive life hot water again; Another partial condensation heat enters environment by heat source side heat exchanger 4; User's side heat exchanger 3 is for the production of chilled water, and the chilled water of producing is user's cooling by air-conditioning equipment 100.

Hot-water circulating pump 50, air conditioner water circulating pump 51 are normally worked; The first water flow control valve 121 is opened, and the second water flow control valve 122, the 3rd water flow control valve 123 are closed.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 5 is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 74 of cross valve 2, the 61 pipeline 61, the 3rd check valve 23 arrival ends, the 3rd check valve 23 ports of export, the arrival end of heater 8, the port of export of heater 8, the second flow direction control valve 42, heat source side heat exchanger 4, the 65 pipeline 65, the 66 pipeline 66, first throttle mechanism 5 arrival ends, first throttle mechanism 5 ports of export, user's side heat exchanger 3, the 64 pipeline 64, the commutation node 72 of cross valve 2, the low pressure node 73 of cross valve 2, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

Under this function, the workflow of the Water system of air-conditioning refrigeration equipment shown in Fig. 8 is divided into two parts.

Part I is: hot water is from heater 8 water side outlet ends are discharged, through the 105 pipeline 105, the first water flow control valve the 121, the 106 pipeline 106, hot water heater 30 arrival ends, hot water heater 30 ports of export, the 108 pipeline 108, hot-water circulating pump 50 arrival ends, hot-water circulating pump 50 ports of export, the second non-return valve 110 arrival ends, second non-return valve 110 ports of export, the 107 pipeline 107, get back to heater 8 water side entrance ends successively.

Part II is: chilled water is from user's side heat exchanger 3 water side outlet ends are discharged, through the 101 pipeline 101, air-conditioning equipment 100 arrival ends, air-conditioning equipment 100 ports of export, the 102 pipeline 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, the first non-return valve 109 arrival ends, first non-return valve 109 ports of export, the 103 pipeline 103, get back to user's side heat exchanger 3 water side entrance ends successively.

(2) independent productive life hot water function

As shown in Fig. 5 and 8, under this function, heat source side heat exchanger 4 draw heat from environment, utilizes the heat of drawing, and in heater 8 and user's side heat exchanger 3, produces hot water, and the hot water of producing is again by hot water heater 30 productive life hot water.

When work, air-conditioning equipment 100, air conditioner water circulating pump 51 are not worked, and hot-water circulating pump 50 is normally worked; First throttle mechanism 5 closes, and the second throttle mechanism 7 is normally worked; The first flow direction control valve 41 standard-sized sheets, the second flow direction control valve 42 is closed.The first water flow control valve 121, the 3rd water flow control valve 123 are closed, and the second water flow control valve 122 is opened.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 5 is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 72 of cross valve 2, the 64 pipeline 64, user's side heat exchanger 3, the 68 pipeline 68, the second check valve 22 arrival ends, second check valve 22 ports of export, the arrival end of heater 8, the port of export of heater 8, the second throttle mechanism 7, the 65 pipeline 65, heat source side heat exchanger 4, the 70 pipeline 70, the first flow direction control valve 41, the 61 pipeline 61, the commutation node 74 of cross valve 2, the low pressure node 73 of cross valve 2, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

Under this function, the workflow of the Water system of air-conditioning refrigeration equipment shown in Fig. 8 is: hot water is from heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the 104 pipeline 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, the 101 pipeline 101, the second water flow control valve 122, the 106 pipeline 106, hot water heater 30 arrival ends, hot water heater 30 ports of export, the 108 pipeline 108, hot-water circulating pump 50 arrival ends, hot-water circulating pump 50 ports of export, the second non-return valve 110 arrival ends, second non-return valve 110 ports of export, the 107 pipeline 107, get back to heater 8 water side entrance ends.

(3) independent heating function

As shown in Fig. 5 and 8, under this function, heat source side heat exchanger 4 draw heat from environment, utilizes the heat of drawing, and in heater 8 and user's side heat exchanger 3, produces hot water, and the hot water of producing is user's heating by air-conditioning equipment 100 again.

When work, hot water heater 30, air conditioner water circulating pump 51 are not worked, and hot-water circulating pump 50 is normally worked; First throttle mechanism 5 closes, and the second throttle mechanism 7 is normally worked; The first flow direction control valve 41 standard-sized sheets, the second flow direction control valve 42 is closed.The first water flow control valve 121, the second water flow control valve 122 are closed, and the 3rd water flow control valve 123 is opened.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 5 is identical with the workflow of independent productive life hot water function.

Under this function, the workflow of the Water system of air-conditioning refrigeration equipment shown in Fig. 8 is: hot water is from heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the 104 pipeline 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, the 101 pipeline 101, air-conditioning equipment 100 arrival ends, air-conditioning equipment 100 ports of export, the 3rd water flow control valve 123, the 108 pipeline 108, hot-water circulating pump 50 arrival ends, hot-water circulating pump 50 ports of export, the second non-return valve 110 arrival ends, second non-return valve 110 ports of export, the 107 pipeline 107, get back to heater 8 water side entrance ends.

(4) simultaneously for warm productive life hot water function

As shown in Fig. 5 and 8, under this function, heat source side heat exchanger 4 draw heat from environment, utilize the heat of drawing, in heater 8 and user's side heat exchanger 3, produce hot water, a hot water part of producing is user's heating by air-conditioning equipment 100, and another part is user's productive life hot water by hot water heater 30.

When work, air conditioner water circulating pump 51 is not worked, and hot-water circulating pump 50 is normally worked; First throttle mechanism 5 closes, and the second throttle mechanism 7 is normally worked; The first flow direction control valve 41 standard-sized sheets, the second flow direction control valve 42 is closed.The first water flow control valve 121 is closed, and the second water flow control valve 122, the 3rd water flow control valve 123 are opened.

Under this function, the workflow of the Water system of air-conditioning refrigeration equipment shown in Fig. 8 is: hot water is from heater 8 water side outlet ends are discharged, through the 105 pipeline the 105, the 104 pipeline the 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, enter the 101 pipeline 101 and be divided into two-way successively; The first via is passed through air-conditioning equipment 100 arrival ends, air-conditioning equipment 100 ports of export, the 3rd water flow control valve 123 successively, enters the 108 pipeline 108; The second tunnel through the second water flow control valve the 122, the 106 pipeline 106, hot water heater 30 arrival ends, hot water heater 30 ports of export, also enters the 108 pipeline 108 successively; Two-way is after the 108 pipeline 108 mixes, pass through successively again hot-water circulating pump 50 arrival ends, hot-water circulating pump 50 ports of export, the second non-return valve 110 arrival ends, second non-return valve 110 ports of export, the 107 pipeline 107, get back to heater 8 water side entrance ends.

(5) winter frost removing

As shown in Fig. 5 and 8, under this function, when winter frost removing, the hold concurrently workflow of heat recovery function of the workflow of the operation of air conditioning systems shown in Fig. 5 and its refrigeration is identical.

That is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, the high pressure node 71 of cross valve 2, the commutation node 74 of cross valve 2, the 61 pipeline 61, the 3rd check valve 23 arrival ends, the 3rd check valve 23 ports of export, the arrival end of heater 8, the port of export of heater 8, the second flow direction control valve 42, heat source side heat exchanger 4, the 65 pipeline 65, the 66 pipeline 66, first throttle mechanism 5 arrival ends, first throttle mechanism 5 ports of export, user's side heat exchanger 3, the 64 pipeline 64, the commutation node 72 of cross valve 2, the low pressure node 73 of cross valve 2, the 63 pipeline 63, get back to compressing mechanism 1 arrival end, enter compressing mechanism 1 again compressed, complete once circulation.

The first water flow control valve 121, the 3rd water flow control valve 123 are closed, and the second water flow control valve 122 is opened; Air-conditioning equipment 100, air conditioner water circulating pump 51 are not worked, and hot-water circulating pump 50 is normally worked.

When work, circulating hot water is by hot water heater 30, and from domestic hot-water draw heat; The circulating hot water being driven by hot-water circulating pump 50, the refrigerant vapour of being discharged by compressor in heater 8 heats, but in user's side heat exchanger 3, heated hot water is emitted again heat, the heat that compressor wasted work produces in this process and the heat of drawing from domestic hot-water are used for defrost by cold-producing medium in heat source side heat exchanger 4.

In the course of the work, the workflow of the Water system of air-conditioning refrigeration equipment shown in Fig. 8 is: hot water is from heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the 104 pipeline 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, the 101 pipeline 101, the second water flow control valve 122, the 106 pipeline 106, hot water heater 30 arrival ends, hot water heater 30 ports of export, the 108 pipeline 108, hot-water circulating pump 50 arrival ends, hot-water circulating pump 50 ports of export, the second non-return valve 110 arrival ends, second non-return valve 110 ports of export, the 107 pipeline 107, get back to heater 8 water side entrance ends.

In addition, when work, any one among both of first throttle mechanism shown in the present embodiment Fig. 5 in scheme 5, the second throttle mechanism 7 can both adopt heating power expansion valve or capillary to substitute; But for first throttle mechanism 5, in the time adopting capillary to substitute, must connect with first throttle mechanism 5 by supporting the 4th check valve 24.The connected mode of the 4th check valve 24 in scheme shown in Fig. 5 has following two: 1) arrival end of the 4th check valve 24 is connected with the 66 pipeline 66, and the port of export of the 4th check valve 24 is connected with the arrival end of first throttle mechanism 5.2) port of export of first throttle mechanism 5 is connected with the port of export of the 4th check valve 24 by the arrival end of the 4th check valve 24.

In addition, in the time that the first throttle mechanism 5 in scheme shown in the present embodiment Fig. 5 is substituted by heating power expansion valve, should adopt the heating power expansion valve of one-way flow; Or the valve combination that adopts heating power expansion valve and the 4th check valve 24 to be composed in series goes to substitute first throttle mechanism 5, while substituting, the 4th check valve 24 can be connected on arrival end or the port of export of heating power expansion valve, maintains the one-way flow of cold-producing medium from the 66 pipeline 66 to user's side heat exchanger 3.

Embodiment 6

Scheme shown in embodiment 1 Fig. 1, by increase an oil eliminator 90 in system, can be improved further, now, the connected mode of oil eliminator 90 in system is: oil eliminator 90 arrival ends are connected with compressing mechanism 1 port of export, and oil eliminator 90 ports of export are connected with the 60 pipeline 60.

When work, the effect of oil eliminator 90 is the exhaust of compressing mechanism 1 to be carried out to oil separate.The above scheme of the present embodiment is applicable to scheme described in all embodiment of the present invention.

Embodiment 7

Scheme shown in embodiment 1 Fig. 1, by increase a gas-liquid separator 91 in system, can be improved further, now, the connected mode of gas-liquid separator 91 in system is: gas-liquid separator 91 ports of export are connected with compressing mechanism 1 arrival end, and gas-liquid separator 91 arrival ends are connected with the 63 pipeline 63.

When work, the effect of gas-liquid separator 91 is separate compressors structure 1 refrigerant liquids in air-breathing, avoids producing liquid hammer.The above scheme of the present embodiment is applicable to scheme described in all embodiment of the present invention.

In the scheme of the above-mentioned all embodiment of the present invention, any one check valve in described the first check valve 21, the second check valve 22, the 3rd check valve 23, the 4th check valve 24 can both adopt magnetic valve, have for example, in throttle mechanism (: electric expansion valve) or the flow control device of turn-off function any one substitutes.

In the scheme of the above-mentioned all embodiment of the present invention, compressing mechanism 1 is except can adopting the single stage compress being made up of at least one compressor, also can adopt by least one low pressure compressor and at least one the Two-stage Compression that high pressure compressor forms, can certainly adopt the single machine compression with double stage mode being formed by least one compressor.

Any one in the above low pressure compressor, high pressure compressor or two whiles, can adopt any one in following compressor: screw compressor, helical-lobe compressor, rolling rotor compressor, sliding-vane compressor, rotary blade type compressor, centrifugal compressor, digital scroll compressor; Any one in low pressure compressor, high pressure compressor or two whiles, can be also variable conpacitance compressor (for example: frequency-changeable compressor, digital scroll compressor), or constant speed compressor.

In the scheme of the above-mentioned all embodiment of the present invention, compressing mechanism 1 can adopt any one in following compressor: screw compressor, helical-lobe compressor, rolling rotor compressor, sliding-vane compressor, rotary blade type compressor, centrifugal compressor, digital scroll compressor; Compressing mechanism 1 can be also variable conpacitance compressor (for example: frequency-changeable compressor, digital scroll compressor), or constant speed compressor; The compressor bank that compressing mechanism 1 can also be made up of at least one variable conpacitance compressor, or the compressor bank being formed by least one constant speed compressor; In addition, compressing mechanism 1 also can be by least one variable conpacitance compressor and at least one the compressor bank that constant speed compressor forms.

In the scheme of the above-mentioned all embodiment of the present invention, user's side heat exchanger 3, except being cold-producing medium-air heat exchanger, can be also 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, user's side heat exchanger 3 adopts any one in volumetric heat exchanger, plate type heat exchanger, shell and tube exchanger or double pipe heat exchanger conventionally.

Heater 8 be except can be cold-producing medium-water-to-water heat exchanger, and heater 8 can be also cold-producing medium-air heat exchanger or according to the heat exchanger that uses other kind needing; During as cold-producing medium-water-to-water heat exchanger, heater 8 adopts any one in volumetric heat exchanger, plate type heat exchanger, shell and tube exchanger or double pipe heat exchanger conventionally, or the heat exchanger of other kind as required.

Any one in user's side heat exchanger 3, heat source side heat exchanger 4 or heater 8 is during as cold-producing medium-air heat exchanger, conventionally adopt finned heat exchanger, the fin of described finned heat exchanger is generally aluminum or aluminum alloy material, also uses copper material in some special occasions.

Heat source side heat exchanger 4 is during as cold-producing medium-water-to-water heat exchanger, and heat source side heat exchanger 4 adopts any one in volumetric heat exchanger, plate type heat exchanger, shell and tube exchanger or double pipe heat exchanger conventionally, or the heat exchanger of other kind as required.

When any one in user's side heat exchanger 3, heat source side heat exchanger 4 or heater 8 adopts when plate type heat exchanger, conventionally adopt brazing plate type heat exchanger, be generally copper brazing plate type heat exchanger or nickel brazing plate type heat exchanger, the material of brazing plate type heat exchanger sheet material is generally stainless steel or titanium.

When any one in user's side heat exchanger 3, heat source side heat exchanger 4 or heater 8 adopts when plate type heat exchanger, the pattern of its sheet material circulation passage is generally any one among H type, M type or L-type three.

When any one in user's side heat exchanger 3, heat source side heat exchanger 4 or heater 8 adopts when plate type heat exchanger, two connectivity ports of its refrigerant side are conventionally adopted the mode that welding or horn mouth silk connect and are connected with refrigerant tubing; Therefore, the present invention adopts plate type heat exchanger when heat source side heat exchanger 4, and when mounted, two connectivity ports of heat source side heat exchanger 4 refrigerant sides are to adopt the mode that welding or horn mouth silk connect to be connected with the 70 pipeline 70 with the 65 pipeline 65 respectively.

When any one in user's side heat exchanger 3, heat source side heat exchanger 4 or heater 8 adopts when plate type heat exchanger, two connectivity ports of its water side are conventionally adopted the mode that welding or silk connect and are connected with waterpipe; And in plate type heat exchanger, between water and cold-producing medium, conventionally adopt the mode of adverse current or following current heat exchange to carry out indirect heat exchange.

In the scheme of the above-mentioned all embodiment of the present invention, in first throttle mechanism 5, the second throttle mechanism 7 one, even all throttle mechanisms can both adopt the throttle mechanism (for example: electric expansion valve) with turn-off function to substitute.

In addition, in the scheme of the above-mentioned all embodiment of the present invention, the second throttle mechanism 7 can also be substituted by heating power expansion valve or capillary.Also can be substituted by heating power expansion valve or capillary for the first throttle mechanism 5 in scheme described in

embodiment

1,2,3,5.

In the scheme of the above-mentioned all embodiment of the present invention, in the first flow direction control valve 41, the second flow direction control valve 42 one, even all flow direction control valves can both adopt magnetic valve, there is for example, in throttle mechanism (: electric expansion valve) or the flow control device of turn-off function any one and substitute.

In the scheme of the above-mentioned all embodiment of the present invention, described all refrigerant tubings are all copper pipes.

Claims

1. an operation of air conditioning systems, at least comprise compressing mechanism (1), user's side heat exchanger (3), heat source side heat exchanger (4), heater (8), first throttle mechanism (5), the second throttle mechanism (7) and the first flow direction control valve (41), it is characterized in that: this operation of air conditioning systems also comprises the second flow direction control valve (42), the port of export of described heater (8) is successively through the second throttle mechanism (7), the 65 pipeline (65), be connected with any one connectivity port in (4) two connectivity ports of described heat source side heat exchanger, another connectivity port of described heat source side heat exchanger (4) is connected by any one connection end point in (41) two connection end points of the 70 pipeline (70) and the first flow direction control valve, described the second flow direction control valve (42) one end is connected with the pipeline between heater (8) port of export and the second throttle mechanism (7), described the second flow direction control valve (42) other end is connected with the 70 pipeline (70), the arrival end of described first throttle mechanism (5) is connected with the 65 pipeline (65) by the 66 pipeline (66).

2. operation of air conditioning systems according to claim 1, it is characterized in that the arrival end of described heater (8), successively through the 60 pipeline (60), compressing mechanism (1) port of export, compressing mechanism (1) arrival end, the 63 pipeline (63), user's side heat exchanger (3), is connected with the port of export of described first throttle mechanism (5); Another connection end point of described the first flow direction control valve (41) is connected with the 63 pipeline (63) between described compressing mechanism (1) arrival end and user's side heat exchanger (3) by the 61 pipeline (61).

3. operation of air conditioning systems according to claim 1, it is characterized in that the arrival end of described heater (8) is successively through the 60 pipeline (60), compressing mechanism (1) port of export, compressing mechanism (1) arrival end, the 63 pipeline (63), user's side heat exchanger (3), be connected with described first throttle mechanism (5) port of export; Another connection end point of described the first flow direction control valve (41) is connected by any one the commutation node (74) in (2) two commutation nodes of the 61 pipeline (61) and cross valve;

The low pressure node (73) of described cross valve (2) is connected with the 63 pipeline (63) between compressing mechanism (1) arrival end and user's side heat exchanger (3) by the 83 pipeline (83);

The high pressure node (71) of described cross valve (2) is connected by the 60 pipeline (60) between arrival end and compressing mechanism (1) port of export of the 82 pipeline (82) and described heater (8);

Another commutation node (72) of described cross valve (2) is successively through the 64 pipeline (64), the second check valve (22) arrival end, the second check valve (22) port of export, also with arrival end and compressing mechanism (1) port of export of heater (8) between the 60 pipeline (60) be connected.

4. operation of air conditioning systems according to claim 1, it is characterized in that the arrival end of described heater (8) is successively through the second check valve (22) port of export, the second check valve (22) arrival end, the 64 pipeline (64), be connected with any one the commutation node (72) in (2) two commutation nodes of cross valve, another commutation node (74) of described cross valve (2) is connected with another connection end point of described the first flow direction control valve (41) by the 61 pipeline (61), the 3rd check valve (23) arrival end is connected with the 61 pipeline (61), described the 3rd check valve (23) port of export is connected with the pipeline between described heater (8) arrival end and the second check valve (22) port of export, the high pressure node (71) of described cross valve (2) is successively through the 60 pipeline (60), compressing mechanism (1) port of export, compressing mechanism (1) arrival end, the 63 pipeline (63), be connected with the low pressure node (73) of described cross valve (2), user's side heat exchanger (3) one end is connected with described first throttle mechanism (5) port of export, the other end of described user's side heat exchanger (3) is connected with the 63 pipeline (63) between described compressing mechanism (1) arrival end and the low pressure node (73) of cross valve (2) by the 67 pipeline (67).

5. operation of air conditioning systems according to claim 1, it is characterized in that described first throttle mechanism (5) port of export passes through user's side heat exchanger (3), the 64 pipeline (64) successively, be connected with any one the commutation node (72) in (2) two commutation nodes of cross valve;

The arrival end of described heater (8) is connected with the 64 pipeline (64) through the second check valve (22) port of export, the second check valve (22) arrival end, the 68 pipeline (68) successively;

Another commutation node (74) of described cross valve (2) is connected with another connection end point of described the first flow direction control valve (41) by the 61 pipeline (61); The 3rd check valve (23) arrival end is connected with the 61 pipeline (61), and described the 3rd check valve (23) port of export is connected with the pipeline between described heater (8) arrival end and the second check valve (22) port of export;

The high pressure node (71) of described cross valve (2), successively through the 60 pipeline (60), compressing mechanism (1) port of export, compressing mechanism (1) arrival end, the 63 pipeline (63), is connected with the low pressure node (73) of described cross valve (2).

6. operation of air conditioning systems according to claim 1, the port of export that it is characterized in that described first throttle mechanism (5) passes through user's side heat exchanger (3), the 64 pipeline (64) successively, is connected with any one the commutation node (72) in (2) two commutation nodes of cross valve;

The arrival end of described heater (8), successively through the second check valve (22) port of export, the second check valve (22) arrival end, the 68 pipeline (68), is connected with the pipeline between described first throttle mechanism's (5) port of export and user's side heat exchanger (3);

7. operation of air conditioning systems according to claim 1, is characterized in that described the second flow direction control valve (42) is magnetic valve.

8. according to the operation of air conditioning systems described in arbitrary claim in claim 1 to 6, it is characterized in that described the first flow direction control valve (41) is magnetic valve.

9. according to the operation of air conditioning systems described in arbitrary claim in claim 3 to 6, it is characterized in that described the first flow direction control valve (41) is substituted by the first check valve (21), described the first check valve (21) port of export is connected with the 61 pipeline (61), and described the first check valve (21) arrival end is connected with the 70 pipeline (70).

10. operation of air conditioning systems according to claim 3, it is characterized in that a capillary (12) one end is connected with the 61 pipeline (61), described capillary (12) other end is connected with the 70 pipeline (70).