CN103615837B

CN103615837B - Four-pipe system air-conditioning system

Info

Publication number: CN103615837B
Application number: CN201310634103.9A
Authority: CN
Inventors: 刘雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-16
Filing date: 2013-11-26
Publication date: 2017-10-24
Anticipated expiration: 2033-11-26
Also published as: CN103322726A; CN103615837A

Abstract

The invention discloses user side heat exchanger, the hot-water heater of operation of air conditioning systems, the first water flow control valve, the second water flow control valve, the 3rd water flow control valve, the 4th water flow control valve, the 5th water flow control valve, the 6th water flow control valve, the 7th water flow control valve, subsystem connecting tube, at least one cooler and the reheater of a kind of four-pipe system air-conditioning system, including operation of air conditioning systems；User side heat exchanger, the 4th water flow control valve, the 5th water flow control valve and at least one cooler of the operation of air conditioning systems constitute the freezing water subsystem of four-pipe system air-conditioning system；The hot-water heater of the operation of air conditioning systems, the first water flow control valve, the 6th water flow control valve and at least one reheater constitute the hot water subsystem of four-pipe system air-conditioning system.Cold and hot amount demand of the air-conditioning system in air handling process can be met simultaneously with an operation of air conditioning systems；It is particularly suitable for use in having demand to humiture, and each air-conditioned room needs the air-conditioning occasion of independent control.

Description

Four-pipe system air-conditioning system

Technical field

The present invention relates to a kind of four-pipe system air-conditioning system by the operation of air conditioning systems driving with heating and cooling function simultaneously System, belongs to air-conditioning technical field.

Background technology

Patent of invention of the present invention applicant in 08 month 2012 disclosed in 01 day, Application No. 201210093904.4 is carried A kind of air treatment equipment water system is gone out, its system composition and air conditioner unit as shown in Figure 7,8, can from figure Go out the air treatment equipment water system air conditioner unit (as shown in Figure 8) heat air in the winter time during, temperature compared with High hot water initially enters cooler 100 and carries out heat exchange with the relatively low intake air of temperature, releases after the reduction of heat water temperature again Into reheater 30 heat exchange is carried out with the air after cooler 100, temperature rise, it can be seen that, hot water exists with air In heat exchanging process in air conditioner unit (as shown in Figure 8), due to not being countercurrent flow, the heat entrained by hot water is not It can effectively release, while air can not obtain higher temperature after being heated, therefore have impact on whole airhandling equipment water system The operating efficiency of system.

Similar situation exists in present invention applicant in 06 month 2013 disclosed in 12 days, Application No. 201310053820.2 patent of invention in (as shown in figure 12).As shown in figure 12, in the course of work, when air-conditioning therein is set Standby 100, hot water heater 30 is air-water heat exchanger respectively, and when constituting air conditioner unit as shown in Figure 8, During winter heating air, hot water is with air due to that can not form adverse current in air conditioner unit (as shown in Figure 8) Heat exchange, therefore can equally influence the operating efficiency of whole air conditioner unit.In present invention applicant on 07 11st, 2012 public affairs In another patent of invention open, Application No. 201210044815.0 (as shown in its Figure of description 5) there is also Same case.

The content of the invention

Cold and hot amount is provided simultaneously by operation of air conditioning systems it is an object of the invention to provide one kind, and in the air conditioner unit winter In season heating process, the four-pipe system air-conditioning system of countercurrent flow process can be realized between water and air

In order to overcome the problem of above-mentioned technology is present, the technical scheme that the present invention solves technical problem is：

1st, a kind of four-pipe system air-conditioning system, including the user side heat exchanger (3) of operation of air conditioning systems, operation of air conditioning systems Hot-water heater (8), the first water flow control valve (121), the second water flow control valve (122), the 3rd water flow control valve (123), 4th water flow control valve (124), the 5th water flow control valve (125), subsystem connecting tube (104), at least one cooler And at least one reheater (30) (100)；

It is characterized in that：The four-pipe system air-conditioning system also includes the 6th water flow control valve (126) and the 7th water flow control valve (127)；

User side heat exchanger (3), the 4th water flow control valve (124), the 5th water flow control valve of the operation of air conditioning systems (125) and at least one cooler (100) constitute four-pipe system air-conditioning system freezing water subsystem；

User side heat exchanger (3) the water side entrance end sequentially passes through the 103rd pipeline (103), the 4th flow cavitation result Valve (124) port of export, the 4th water flow control valve (124) arrival end are connected with chilled water backwater main (102), the user side Heat exchanger (3) water side outlet end is connected with chilled water water main (101), and cooler (100) the water side outlet end passes through 113 pipelines (113) are connected with chilled water backwater main (102), and cooler (100) the water side entrance end is passed through successively Cross the 5th water flow control valve (125) port of export, the 5th water flow control valve (125) arrival end and chilled water water supply is dry (101) are managed to be connected；

Hot-water heater (8), the first water flow control valve (121), the 6th water flow control valve of the operation of air conditioning systems (126) and at least one reheater (30) constitute four-pipe system air-conditioning system hot water subsystem；

Hot-water heater (8) the water side entrance end is connected with hot water backwater's main (108), the hot-water heater (8) Water side outlet end sequentially passes through the 105th pipeline (105), the first water flow control valve (121) arrival end, the first flow cavitation result Valve (121) port of export is connected with hot water water main (109), and reheater (30) the water side entrance end passes through the 106th Pipeline (106) is connected with the hot water water main (109), and reheater (30) the water side outlet end sequentially passes through the 100th 12 pipelines (112), the 6th water flow control valve (126) are connected with hot water backwater's main (108)；

112nd pipe of described 7th water flow control valve (127) one end and the reheater (30) water side outlet end Road (112) is connected, the 7th water flow control valve (127) other end and the cooler (100) water side entrance end and the 5th Pipeline between water flow control valve (125) port of export is connected；

Described second water flow control valve (122) one end is connected with the chilled water water main (101), second current Control valve (122) other end is connected with the first water flow control valve (121) port of export pipeline；

Described 3rd water flow control valve (123) one end is connected with the 4th water flow control valve (124) the arrival end pipeline, institute The 3rd water flow control valve (123) other end is stated with the hot-water heater (8) water side entrance end pipe road to be connected；

Described subsystem connecting tube (104) one end and user side heat exchanger (3) the water side entrance end and the 4th current control The 103rd pipeline (103) between valve (124) port of export processed is connected, subsystem connecting tube (104) other end with The 105th pipeline between the arrival end of hot-water heater (8) the water side outlet end and the first water flow control valve (121) (105) it is connected.

2nd, a kind of four-pipe system air-conditioning system, including the user side heat exchanger (3) of operation of air conditioning systems, operation of air conditioning systems Hot-water heater (8), the first water flow control valve (121), the second water flow control valve (122), the 3rd water flow control valve (123), 4th water flow control valve (124), the 5th water flow control valve (125), subsystem connecting tube (104), at least one cooler And at least one reheater (30) (100)；

Described second water flow control valve (122) one end and user side heat exchanger (3) the water side entrance end and the 4th current The 103rd pipeline (103) between control valve (124) port of export is connected, and second water flow control valve (122) is another End and the 105th pipe between the hot-water heater (8) water side outlet end and the first water flow control valve (121) arrival end Road (105) is connected；

Described subsystem connecting tube (104) one end is connected with the chilled water water main (101), the subsystem connection Pipe (104) other end is connected with the first water flow control valve (121) port of export pipeline.

3rd, a kind of four-pipe system air-conditioning system, including the user side heat exchanger (3) of operation of air conditioning systems, operation of air conditioning systems Hot-water heater (8), the first water flow control valve (121), the second water flow control valve (122), the 3rd water flow control valve (123), 5th water flow control valve (125), the 4th water flow control valve (124), subsystem connecting tube (104), at least one cooler And at least one reheater (30) (100)；

Described 3rd water flow control valve (123) one end is connected with the chilled water water main (101), the 3rd current Control valve (123) other end is connected with the first water flow control valve (121) port of export pipeline；

Described subsystem connecting tube (104) one end is connected with the 4th water flow control valve (124) the arrival end pipeline, described Subsystem connecting tube (104) other end is connected with the hot-water heater (8) water side entrance end pipe road.

Compared with prior art, its advantage is the present invention：

1. cold and hot amount demand of the air-conditioning system in air handling process can be met simultaneously with an operation of air conditioning systems；

2. in the air conditioner unit of air-conditioning system, winter can realize the countercurrent flow between hot water and heated air Process；

3. simple in construction, reliable operation, with low cost；

4. the present invention is applied to the central air conditioner system of industry and civil area, being particularly suitable for use in having humidity and temperature needs The occasion asked.

Brief description of the drawings

Fig. 1 is the structural representation of the four-pipe system air-conditioning system of the embodiment of the present invention 1；

Fig. 2 is the structural representation of the four-pipe system air-conditioning system of the embodiment of the present invention 2；

Fig. 3 is the structural representation of the four-pipe system air-conditioning system of the embodiment of the present invention 3；

Fig. 4 is the structural representation of the four-pipe system air-conditioning system of the embodiment of the present invention 4；

Fig. 5 is the structural representation of the four-pipe system air-conditioning system of the embodiment of the present invention 5；

Fig. 6 is the structural representation of air conditioner unit 110 in the present invention；

Fig. 7 is the air treatment equipment water system structural representation of prior art of the present invention；

Fig. 8 is the air conditioner unit structural representation of prior art of the present invention；

Fig. 9 is the operation of air conditioning systems structural representation matched with the present invention；

Figure 10 is the structural representation of the four-pipe system air-conditioning system of the embodiment of the present invention 6；

Figure 11 is the structural representation of the four-pipe system air-conditioning system of the embodiment of the present invention 7；

Figure 12 is the Water system of air-conditioning refrigeration equipment structural representation of prior art of the present invention.

Embodiment

Present invention is described in further detail below in conjunction with the accompanying drawings.

It is a kind of operation of air conditioning systems with cooling and heat supply function simultaneously shown in Fig. 9, for for the embodiment of the present invention 1 Cold and hot amount needed for providing processing air to the described four-pipe system air-conditioning system of 5 difference.

Operation of air conditioning systems shown in Fig. 9 includes consisting of part：Compression mechanism 1, four-way valve 2, first throttle mechanism 5th, second throttle body 7, user side heat exchanger 3, heat source side heat exchanger 4, hot-water heater 8, the first check valve 21, second are single To the check valve 23 of valve 22 and the 3rd；First throttle mechanism 5, second throttle body 7 are electric expansion valve；User side heat exchanger 3 is One refrigerant-water- to-water heat exchanger, the need for air is handled, available for production chilled water or hot water；Heat source side heat exchanger 4 It is a refrigerant-air heat exchanger, can not only be used for condenser, the condensation heat produced by refrigeration is distributed into environment, can also As evaporator, heat is absorbed from environment；Hot-water heater 8 is also a refrigerant-water- to-water heat exchanger, and whole year is used to be four Control air-conditioning system produces hot water.

The connected mode of each part of operation of air conditioning systems shown in Fig. 9 is as described below：

The high voltage nodes 71 of four-way valve 2 are connected by the 60th pipeline 60 with the port of export of compression mechanism 1, four-way valve 2 it is low Pressure node 73 is connected by the 63rd pipeline 63 with the arrival end of compression mechanism 1, any in 2 two commutation nodes of four-way valve One node 72 passes sequentially through the 64th pipeline 64, the port of export of the second check valve 22, the arrival end of the second check valve 22, the 6th 16 pipelines 66, first throttle mechanism 5, the 62nd pipeline 62, the arrival end of the 3rd check valve 23, the 3rd check valve 23 are exported 64th pipeline 64 at end, the port of export of the first check valve 21, the arrival end of the first check valve 21 and the port of export of the second check valve 22 It is connected；

The refrigerant side arrival end of hot-water heater 8 passes through the 69th pipeline 69 and the port of export of the first check valve 21 and the 3rd Pipeline between the port of export of check valve 23 is connected, and the refrigerant side port of export of hot-water heater 8 sequentially passes through the 68th pipeline 68th, second throttle body 7, the arrival end of heat source side heat exchanger 4, the port of export of heat source side heat exchanger 4, the 70th pipeline 70 and second The 66th pipeline 66 between the arrival end of check valve 22 and first throttle mechanism 5 is connected；

Another commutation node 74 of four-way valve 2 passes through the 61st pipeline 61 and the refrigerant side two of user side heat exchanger 3 Any one connecting node in individual connecting node is connected, another connecting node of the refrigerant side of user side heat exchanger 3 and the The 62nd pipeline 62 between the arrival end of three check valve 23 and first throttle mechanism 5 is connected.

Produced during shown in Fig. 6 be four-pipe system air-conditioning system of the present invention, using the operation of air conditioning systems shown in Fig. 9 Chilled water and hot water, the air conditioner unit 110 that is handled air；It distinguishes suitable for the embodiment of the present invention 1 to 5 Described all four-pipe system air-conditioning systems.

As shown in fig. 6, air conditioner unit 110 includes at least one cooler 100 and at least one reheater 30；Air The composition proposal of processing unit 110 is：Cooler 100, reheater 30 are arranged in same air conditioner unit 110, and along sky The flow direction of gas, reheater 30 is in the downwind side of cooler 100.

In the course of work of air conditioner unit 110, in order to which wet bulb and dry-bulb temperature to the air that is processed are controlled System, as shown in fig. 6, having additional two temperature-detecting devices, i.e.,：First temperature-detecting device 91 and second temperature detection means 92；During work, the first temperature-detecting device 91 is used for the wet-bulb temperature for detecting processed air, second temperature detection means 92 Dry-bulb temperature for detecting processed air.

The set location of first temperature-detecting device 91 and second temperature detection means 92 in air conditioner unit 110 has Several schemes below：

1) along the flow direction of air, the first temperature-detecting device 91, second temperature detection means 92 are all arranged at reheating The air side of device 30；

2) along the flow direction of air, the first temperature-detecting device 91 is arranged at the inlet side of cooler 100, second temperature Detection means 92 is arranged at the air side of reheater 30；

3) along the flow direction of air, the first temperature-detecting device 91 is arranged at the air side of cooler 100, second temperature Detection means 92 is arranged at the air side of reheater 30；

4) along the flow direction of air, the first temperature-detecting device 91, second temperature detection means 92 are all arranged at cooling The inlet side of device 100, as shown in Figure 6；

5) along the flow direction of air, the first temperature-detecting device 91 is arranged at the air side of cooler 100, second temperature Detection means 92 is arranged at the inlet side of cooler 100；

6) along the flow direction of air, the first temperature-detecting device 91 is arranged at the air side of reheater 30, second temperature Detection means 92 is arranged at the inlet side of cooler 100.

Embodiment 1

Four-pipe system air-conditioning system shown in Fig. 1 includes freezing water subsystem and hot water subsystem two parts.Two subsystems Including consisting of part：The user side heat exchanger 3 of operation of air conditioning systems, the hot-water heater 8 of operation of air conditioning systems, reheating Device 30, hot water circulating pump 50, air-conditioning water-circulating pump 51, cooler 100, the first water flow control valve 121, the second water flow control valve 122nd, the 3rd water flow control valve 123, the 4th water flow control valve 124, the 5th water flow control valve 125, the 6th water flow control valve 126, 7th water flow control valve 127.

In the four-pipe system air-conditioning system shown in Fig. 1, air-conditioning water-circulating pump 51, the peace of hot-water circulating pump 50 in systems Holding position is：The port of export of air-conditioning water-circulating pump 51 and the arrival end of the 4th water flow control valve 124 and the phase of the 3rd water flow control valve 123 Even, the arrival end of air-conditioning water-circulating pump 51 is connected with chilled water backwater main 102；The arrival end of hot-water circulating pump 50 is returned with hot water Water conduit tube 108 is connected, the port of export of hot-water circulating pump 50 and the water side entrance end of hot-water heater 8 and the 3rd water flow control valve 123 It is connected.

In annual running, the four-pipe system air-conditioning system shown in Fig. 1, and for it provide cold and hot in the course of the work Operation of air conditioning systems shown in Fig. 9 of amount, it is possible to achieve following functions, when realizing each function, the air conditioner refrigerating shown in Fig. 9 The workflow difference of four-pipe system air-conditioning system shown in equipment and the associated Fig. 1 of the present embodiment is as described below.

(1) cooling or dehumidification function (dry-bulb temperature or wet-bulb temperature that only control air) of the summer to air

Under this function, 110 pairs of processed air of air conditioner unit shown in Fig. 6 cooled down or cooling and dehumidifying at Reason, the air after the processing of cooled or cooling and dehumidifying does not require reheating.

As illustrated in figs 1 and 9, under this function, user side heat exchanger 3 is used to produce chilled water, and the chilled water produced leads to The cooler 100 crossed in air conditioner unit 110 is cooled down or cooling and dehumidifying processing to air；Operation of air conditioning systems is in life Condensation heat produced by during production chilled water is not reclaimed, but is all discharged into by heat source side heat exchanger 4 in surrounding environment.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；Hot water circulating pump 50 does not work, empty The normal work of water transfer circulating pump 51；First water flow control valve 121, the second water flow control valve 122, the 3rd water flow control valve 123, 6th water flow control valve 126, the 7th water flow control valve 127 are closed；The standard-sized sheet of 4th water flow control valve 124；5th water flow control valve 125 normal works, usual 5th water flow control valve 125 is two-way electric control valve (or being straight-through electric control valve), work When, the chilled-water flow of cooler 100 is entered for adjusting.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is：Refrigerant is from the port of export of compression mechanism 1 After discharge, the 60th pipeline 60, the high voltage nodes 71 of four-way valve 2, the commutation of four-way valve 2 node 72, the 64th pipe are sequentially passed through Road 64, the arrival end of the first check valve 21, the port of export of the first check valve 21, the 69th pipeline 69, the refrigerant of hot-water heater 8 Side entrance end, the refrigerant side port of export of hot-water heater 8, the 68th pipeline 68, second throttle body 7, heat source side heat exchanger 4 arrival ends, the port of export of heat source side heat exchanger 4, the 70th pipeline 70, the 66th pipeline 66, first throttle mechanism the 5, the 60th Two pipelines 62, into the refrigerant side of user side heat exchanger 3, heat exchange is carried out by user side heat exchanger 3 and water；Refrigerant Absorb after heat, the refrigerant side from user side heat exchanger 3 come out, then sequentially pass through the 61st pipeline 61, four-way valve 2 and change To node 74, the low pressure node 73 of four-way valve 2, the 63rd pipeline 63, the arrival end of compression mechanism 1 is returned to, so far completes once to follow Ring.

Under this function, the hot water subsystem in four-pipe system air-conditioning system shown in Fig. 1 does not work, four pipes shown in Fig. 1 The workflow of freezing water subsystem in air-conditioning system processed is as described below：Chilled water is from the water side outlet end of user side heat exchanger 3 After discharge, sequentially pass through chilled water water main 101, the arrival end of the 5th water flow control valve 125, the 5th water flow control valve 125 and go out Mouthful end, the arrival end of cooler 100, the port of export of cooler 100, the 113rd pipeline 113, chilled water backwater main 102, The arrival end of air-conditioning water-circulating pump 51, the port of export of air-conditioning water-circulating pump 51, the arrival end of the 4th water flow control valve 124, the 4th current control The port of export of valve 124 processed, the 103rd pipeline 103, return to the water side entrance end of user side heat exchanger 3.

Control method when four-pipe system air-conditioning system shown in Fig. 1 works under this function is as described below.

Scheme one

When air conditioner unit 110 is that the dry-bulb temperature for the air that is processed is controlled, and air-conditioning water-circulating pump 51 is Constant speed water pump, when compression mechanism 1 is frequency-changeable compressor, its control method is as follows：

1) when working, the processed air that the 5th water flow control valve 125 is detected with second temperature detection means 92 it is dry Ball temperature adjusts the valve opening size of the 5th water flow control valve 125, i.e., as control signal：Regulation passes through cooler 100 Chilled-water flow, so as to change the cold of cooling air；During work, when being located that second temperature detection means 92 is detected When the dry-bulb temperature for managing air is less than dry-bulb temperature desired value, then reduce the valve opening of the 5th water flow control valve 125, when the When the dry-bulb temperature for the processed air that two temperature-detecting devices 92 are detected is higher than dry-bulb temperature desired value, then increase by the 5th water The valve opening of flow control valve 125.

2) in the course of work, to be located at the institute of chilled water supply water temperature sensor 400 at the water side outlet end of user side heat exchanger 3 The chilled water supply water temperature of detection controls the working frequency of compression mechanism 1 by master controller 200, i.e., as control signal： Compression mechanism 1 is controlled in the way of frequency conversion to the chilled water supply water temperature at the water side outlet end of user side heat exchanger 3.Work When, when the actual chilled water at the water side outlet end of user side heat exchanger 3 that chilled water supply water temperature sensor 400 is detected supplies water When temperature is higher than chilled water supply water temperature desired value, then increase the working frequency of compression mechanism 1 by master controller 200；When cold The actual chilled water supply water temperature for freezing the water side outlet end of user side heat exchanger 3 that water supply water temperature sensor 400 is detected is less than During chilled water supply water temperature desired value, then reduce the working frequency of compression mechanism 1 by master controller 200.

Scheme two

Under this function, when air conditioner unit 110 is that the wet-bulb temperature for the air that is processed is controlled, and air conditioner water Circulating pump 51 is constant speed water pump, and when compression mechanism 1 is frequency-changeable compressor, its control method is as follows：

1) work when, the processed air that the 5th water flow control valve 125 is detected with the first temperature-detecting device 91 it is wet Ball temperature adjusts the valve opening of the 5th water flow control valve 125 by air conditioner unit controller 300 as control signal Size, i.e.,：Regulation passes through the chilled-water flow of cooler 100, so as to adjust the cold of cooling air；During work, the first temperature The actual wet-bulb temperature data for the processed air that degree detection means 91 is detected are delivered to air conditioner unit controller 300, when the actual wet-bulb temperature for the processed air that the first temperature-detecting device 91 is detected is less than wet-bulb temperature desired value When, then reduce the valve opening of the 5th water flow control valve 125 by air conditioner unit controller 300, when the first temperature detection When the actual wet-bulb temperature for the processed air that device 91 is detected is higher than wet-bulb temperature desired value, then pass through air-treatment list Cell controller 300 increases the valve opening of the 5th water flow control valve 125.

In two above control program, air-conditioning water-circulating pump 51 is constant speed water pump, and requires to pass through user side heat exchanger 3 The chilled-water flow of water side is definite value, therefore, when the 5th water flow control valve 125 carries out changeable flow adjustment to chilled-water flow, As shown in figure 1, in the course of work, unnecessary chilled water is to be bypassed by bypass regulator valve 130 from chilled water water main 101 It is back in chilled water backwater main 102, to maintain the chilled-water flow of the water side of user side heat exchanger 3 as definite value.

Now, the connected mode of bypass regulator valve 130 in systems is：The arrival end of bypass regulator valve 130 is supplied with chilled water Water conduit tube 101 is connected, and the port of export of bypass regulator valve 130 is connected with chilled water backwater main 102.

During work, first pressure sensor 41 is used to detect the chilled water pressure of supply water on chilled water water main 101；The Two pressure sensors 42 are used to detect the chilled water pressure of return water on chilled water backwater main 102；The chilled water that is detected supplies, Pressure of return water is all fed to master controller 200, and master controller 200 utilizes first pressure sensor 41, second pressure sensor 42 The confession that is detected, pressure of return water calculate the actual freezing between chilled water water main 101 and chilled water backwater main 102 Water supplies backwater pressure difference.

In the course of the work, when actual chilled water supplies backwater pressure difference desired value for backwater pressure difference less than chilled water, then lead to Cross the control bypass regulator valve 130 of master controller 200 to close, backwater pressure is supplied when actual chilled water is higher than chilled water for backwater pressure difference During poor desired value, then the valve opening of bypass regulator valve 130 is adjusted by master controller 200, makes chilled water water main 101 Actual chilled water between chilled water backwater main 102 is equal to chilled water for backwater pressure difference and supplies backwater pressure difference desired value.

When being worked under this function, above-described control method is applied to scheme described in all embodiments of the invention.

(2) summer and transition season constant temperature and humidity function (dry-bulb temperature, wet-bulb temperature to air are controlled simultaneously)

Under this function, air conditioner unit 110 first carries out cooling and dehumidifying processing to processed air, is cooled at dehumidifying Air after reason, then be heated, reach after requirement wind pushing temperature, then be admitted to air-conditioned room.

As illustrated in figs 1 and 9, under this function, user side heat exchanger 3 is used to produce chilled water, and the chilled water produced leads to The processed air of 100 pairs of cooler crossed in air conditioner unit 110 carries out cooling and dehumidifying processing；Hot-water heater 8 utilizes figure Operation of air conditioning systems shown in 9 is during chilled water is produced, and produced partial condensation heat production hot water is produced Hot water recycles the reheater 30 in air conditioner unit 110, and reheating is carried out to the air after the dehumidification treatments that are cooled；It is another Partial condensation heat is discharged into environment by heat source side heat exchanger 4.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；Hot water circulating pump 50, air conditioner water are followed The normal work of ring pump 51；First water flow control valve 121, the standard-sized sheet of the 4th water flow control valve 124；Second water flow control valve 122, Three water flow control valves 123, the 7th water flow control valve 127 are closed；5th water flow control valve 125, the 6th water flow control valve 126 are just Often work, usual 5th water flow control valve 125, the 6th water flow control valve 126 are all that two-way electric control valve (or is straight-through Electric control valve)；During work, the 5th water flow control valve 125 is used to adjust the chilled-water flow for entering cooler 100, the 6th water Flow control valve 126 is used to adjust the hot water flow for entering reheater 30.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is：Refrigerant is from the port of export of compression mechanism 1 After discharge, the 60th pipeline 60, the high voltage nodes 71 of four-way valve 2, the commutation of four-way valve 2 node 72, the 64th pipe are sequentially passed through Road 64, the arrival end of the first check valve 21, the port of export of the first check valve 21, the 69th pipeline 69, the refrigerant of hot-water heater 8 Side entrance end, the refrigerant side port of export of hot-water heater 8, the 68th pipeline 68, second throttle body 7, heat source side heat exchanger 4 arrival ends, the port of export of heat source side heat exchanger 4, the 70th pipeline 70, the 66th pipeline 66, first throttle mechanism the 5, the 60th Two pipelines 62, into the refrigerant side of user side heat exchanger 3, heat exchange is carried out by user side heat exchanger 3 and water；Refrigerant Absorb after heat, the refrigerant side from user side heat exchanger 3 come out, then sequentially pass through the 61st pipeline 61, four-way valve 2 and change To node 74, the low pressure node 73 of four-way valve 2, the 63rd pipeline 63, the arrival end of compression mechanism 1 is returned to.

Under this function, the hot water subsystem of four-pipe system air-conditioning system shown in Fig. 1 and the workflow of freezing water subsystem It is as described below respectively.

The workflow of hot water subsystem is：After hot water is discharged from the water side outlet end of hot-water heater 8, first is sequentially passed through 105 pipelines 105, the arrival end of the first water flow control valve 121, the port of export of the first water flow control valve 121, hot water water main 109th, the 106th pipeline 106, the arrival end of reheater 30, the port of export of reheater 30, the 112nd pipeline the 112, the 6th Water flow control valve 126, hot water backwater's main 108, the arrival end of hot water circulating pump 50, the port of export of hot water circulating pump 50, return to hot water The water side entrance end of heater 8.

Freezing the workflow of water subsystem is：After chilled water is discharged from the water side outlet end of user side heat exchanger 3, pass through successively Cross chilled water water main 101, the arrival end of the 5th water flow control valve 125, the port of export of the 5th water flow control valve 125, cooler 100 arrival ends, the port of export of cooler 100, the 113rd pipeline 113, chilled water backwater main 102, air-conditioning water-circulating pump 51 arrival ends, the port of export of air-conditioning water-circulating pump 51, the arrival end of the 4th water flow control valve 124, the 4th water flow control valve 124 are exported End, the 103rd pipeline 103, return to the water side entrance end of user side heat exchanger 3.

Under this function, when hot water circulating pump 50, air-conditioning water-circulating pump 51 are constant speed water pump, compression mechanism 1 is frequency conversion pressure During contracting machine, the control method of scheme shown in Fig. 1 is as follows：

2) when working, the processed air that the 6th water flow control valve 126 is detected with second temperature detection means 92 it is dry Ball temperature adjusts the valve opening of the 6th water flow control valve 126 by air conditioner unit controller 300 as control signal Size, i.e.,：Regulation passes through the hot water flow of reheater 30, so as to adjust the heat of heating air；During work, second temperature inspection The actual dry-bulb temperature data for surveying the processed air that device 92 is detected are delivered to air conditioner unit controller 300, when When the actual dry-bulb temperature for the processed air that second temperature detection means 92 is detected is less than dry-bulb temperature desired value, then pass through Air conditioner unit controller 300 increases the valve opening of the 6th water flow control valve 126, when the institute of second temperature detection means 92 When the actual dry-bulb temperature of the processed air of detection is higher than dry-bulb temperature desired value, then pass through air conditioner unit controller 300 reduce the valve opening of the 6th water flow control valve 126.

3) in the course of work, to be located at the institute of chilled water supply water temperature sensor 400 at the water side outlet end of user side heat exchanger 3 The chilled water supply water temperature of detection controls the working frequency of compression mechanism 1 by master controller 200, i.e., as control signal： Compression mechanism 1 is controlled in the way of frequency conversion to the chilled water supply water temperature at the water side outlet end of user side heat exchanger 3.Work When, when the actual chilled water at the water side outlet end of user side heat exchanger 3 that chilled water supply water temperature sensor 400 is detected supplies water When temperature is higher than chilled water supply water temperature desired value, then increase the working frequency of compression mechanism 1 by master controller 200；When cold The actual chilled water supply water temperature for freezing the water side outlet end of user side heat exchanger 3 that water supply water temperature sensor 400 is detected is less than During chilled water supply water temperature desired value, then reduce the working frequency of compression mechanism 1 by master controller 200.

Under this function, the effect of bypass regulator valve 130 and control method and cooling or dehumidification function of the summer to air It is identical.In addition, when being worked under this function, above-described control method is applied to scheme described in all embodiments of the invention.

(3) heating function of the winter to air

As illustrated in figs 1 and 9, under this function, the draw heat from environment of heat source side heat exchanger 4 utilizes drawn heat Amount, produces hot water, the hot water produced passes through cooler 100 and reheating again in hot-water heater 8 and user side heat exchanger 3 Device 30 is heated in air conditioner unit 110 to processed air.

During work, the normal work of air-conditioning water-circulating pump 51, hot water circulating pump 50 does not work；First throttle mechanism 5 is closed, The normal work of second throttle body 7；First water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, 6th water flow control valve 126 is closed；Second water flow control valve 122, the standard-sized sheet of the 3rd water flow control valve 123；7th water flow control valve 127 normal works, usual 7th water flow control valve 127 is two-way electric control valve (or being straight-through electric control valve)；Work When, the 7th water flow control valve 127 is used to adjust the hot water flow by cooler 100 and reheater 30.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is：Refrigerant is from the port of export of compression mechanism 1 After discharge, the 60th pipeline 60, the high voltage nodes 71 of four-way valve 2, the commutation of four-way valve 2 node 74, the 61st pipe are sequentially passed through Road 61, heat exchange is carried out into the water in the refrigerant side and air treatment equipment water system of user side heat exchanger 3, releases heat Measure, after the refrigerant side of user side heat exchanger 3 comes out, then sequentially pass through the 62nd pipeline 62, the entrance of the 3rd check valve 23 End, the port of export of the 3rd check valve 23, the 69th pipeline 69, the refrigerant side arrival end of hot-water heater 8, hot-water heater 8 are made Cryogen side outlet end, the 68th pipeline 68, second throttle body 7, the arrival end of heat source side heat exchanger 4, heat source side heat exchanger 4 The port of export, the 70th pipeline 70, the 66th pipeline 66, the arrival end of the second check valve 22, the port of export of the second check valve 22, 64 pipelines 64, the commutation of four-way valve 2 node 72, the low pressure node 73 of four-way valve 2, the 63rd pipeline 63, return to compression mechanism 1 arrival end.

Under this function, the workflow of four-pipe system air-conditioning system shown in Fig. 1 is：Hot water goes out from the water side of hot-water heater 8 After the discharge of mouth end, the 105th pipeline 105, subsystem connecting tube 104, the 103rd pipeline 103, user are sequentially passed through The water side entrance end of side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, the second water flow control valve 122nd, hot water water main 109, the 106th pipeline 106, the arrival end of reheater 30, the port of export of reheater 30, the 7th current Control valve 127, the arrival end of cooler 100, the port of export of cooler 100, the 113rd pipeline 113, chilled water backwater main 102nd, the arrival end of air-conditioning water-circulating pump 51, the port of export of air-conditioning water-circulating pump 51, the 3rd water flow control valve 123, return to hot water heating The water side entrance end of device 8.

Under this function, when air-conditioning water-circulating pump 51 is variable frequency pump, and compression mechanism 1 is frequency-changeable compressor, shown in Fig. 1 The control method of four-pipe system air-conditioning system is as follows：

1) control of master controller 200 bypass regulator valve 130 is closed.

2) when working, the processed air that the 7th water flow control valve 127 is detected with second temperature detection means 92 it is dry Ball temperature adjusts the valve opening of the 7th water flow control valve 127 by air conditioner unit controller 300 as control signal Size, i.e.,：Regulation is by reheater 30 and the hot water flow of cooler 100, so as to adjust the heat of heating air；During work, The actual dry-bulb temperature data for the processed air that second temperature detection means 92 is detected are delivered to air conditioner unit control Device 300 processed, when the actual dry-bulb temperature for the processed air that second temperature detection means 92 is detected is expected less than dry-bulb temperature During value, then increase the valve opening of the 7th water flow control valve 127 by air conditioner unit controller 300, when second temperature inspection When the actual dry-bulb temperature for surveying the processed air that device 92 is detected is higher than dry-bulb temperature desired value, then pass through air-treatment list Cell controller 300 reduces the valve opening of the 7th water flow control valve 127.

3) in the course of work, the heat detected with the hot water supply water temperature sensor 500 being located on hot water water main 109 Water supply water temperature controls the working frequency of compression mechanism 1 by master controller 200, i.e., as control signal：Compression mechanism 1 Hot water supply water temperature is controlled in the way of frequency conversion.During work, the reality detected when hot water supply water temperature sensor 500 When border hot water supply water temperature is higher than hot water supply water temperature desired value, then reduce the work of compression mechanism 1 by master controller 200 Frequency；When the actual hot water supply water temperature that hot water supply water temperature sensor 500 is detected is less than hot water supply water temperature desired value, Then increase the working frequency of compression mechanism 1 by master controller 200.

4) in the course of work, the detected chilled water of first pressure sensor 41, the difference of second pressure sensor 42 is supplied Water conduit tube 101 and confession on chilled water backwater main 102, pressure of return water signal are all delivered to master controller 200, main control The confession that device 200 is calculated using two pressure signals between chilled water water main 101 and chilled water backwater main 102 is returned Differential water pressures, supply backwater pressure difference as control signal, pass through the work frequency that master controller 200 controls air-conditioning water-circulating pump 51 using this Rate, i.e.,：Air-conditioning water-circulating pump 51 is controlled in the way of frequency conversion to hot water flow.During work, when master controller 200 is examined When the actual confession backwater pressure difference measured is higher than for backwater pressure difference desired value, then air-conditioning water-circulating pump is reduced by master controller 200 51 working frequency；When the actual confession backwater pressure difference detected by master controller 200 is less than for backwater pressure difference desired value, then Increase the working frequency of air-conditioning water-circulating pump 51 by master controller 200.

Under this function, above-described control method is applied to all schemes of the present embodiment, and described in embodiment 2 All schemes.

(4) winter frost removing function

Under this function, stop the air flow of air conditioner unit 110.As illustrated in figs 1 and 9, under this function, the winter When season defrosts, the workflow of the operation of air conditioning systems shown in Fig. 9 is with its summer to the cooling of air or the work of dehumidification function Flow is identical.I.e.：Refrigerant sequentially passes through the 60th pipeline 60, the high pressure section of four-way valve 2 after the discharge of the port of export of compression mechanism 1 Point 71, four-way valve 2 commutation node 72, the 64th pipeline 64, the arrival end of the first check valve 21, the port of export of the first check valve 21, 69th pipeline 69, the refrigerant side arrival end of hot-water heater 8, the refrigerant side port of export of hot-water heater 8, the 68th Pipeline 68, second throttle body 7, the arrival end of heat source side heat exchanger 4, the port of export of heat source side heat exchanger 4, the 70th pipeline 70, 66 pipelines 66, first throttle mechanism 5, the 62nd pipeline 62, into the refrigerant side of user side heat exchanger 3, by using Family side heat exchanger 3 carries out heat exchange with the water in four-pipe system air-conditioning system；Refrigerant suction heat, from user side heat exchanger 3 After refrigerant side comes out, then sequentially pass through the 61st pipeline 61, four-way valve 2 commutation node 74, the low pressure node 73 of four-way valve 2, 63rd pipeline 63, returns to the arrival end of compression mechanism 1.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；The normal work of air-conditioning water-circulating pump 51 Make, hot water circulating pump 50 does not work；First water flow control valve 121, the second water flow control valve 122, the 4th water flow control valve 124, 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed；3rd water flow control valve 123 Standard-sized sheet；The control bypass regulator valve 130 of master controller 200 is shown in a fully open operation.

During work, the circulating hot water driven by air-conditioning water-circulating pump 51 is arranged in hot-water heater 8 by compression mechanism 1 The refrigerant vapour heating gone out, but in user side heat exchanger 3, heated hot water releases heat again, compresses in the process Heat produced by the wasted work of mechanism 1 and the heat drawn from four-pipe system air-conditioning system, pass through in heat source side heat exchanger 4 Refrigerant is used for defrost.

In the course of the work, the workflow of the four-pipe system air-conditioning system shown in Fig. 1 is：Hot water is from the water of hot-water heater 8 Side outlet end discharge after, sequentially pass through the 105th pipeline 105, subsystem connecting tube 104, the 103rd pipeline 103, The water side entrance end of user side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, bypass regulator valve 130th, chilled water backwater main 102, the arrival end of air-conditioning water-circulating pump 51, the port of export of air-conditioning water-circulating pump 51, the 3rd flow cavitation result Valve 123, returns to the water side entrance end of hot-water heater 8.

Air-conditioning water-circulating pump 51, the installation site of hot-water circulating pump 50 in systems, in addition to scheme shown in Fig. 1, In Practical Project, air-conditioning water-circulating pump 51, the installation site of hot-water circulating pump 50 in systems also have following change side Case, these change programmes can also realize all the above function of four-pipe system air-conditioning system shown in the present embodiment Fig. 1, And when realizing each function, its circulation loop is identical with control method, it is distinguished in being only cyclic process, air-conditioning water-circulating pump 51, Location is different in the circulating cycle for hot-water circulating pump 50.

The following institute of change programme of air-conditioning water-circulating pump 51, hot-water circulating pump 50 installation site in the system shown in figure 1 State：

1) port of export of air-conditioning water-circulating pump 51 and the arrival end of the 4th water flow control valve 124 and the phase of the 3rd water flow control valve 123 Even, the arrival end of air-conditioning water-circulating pump 51 is connected with chilled water backwater main 102；The arrival end of hot-water circulating pump 50 and the 100th 05 pipelines 105 are connected, and the port of export of hot-water circulating pump 50 is connected with the arrival end of the first water flow control valve 121.

2) port of export of air-conditioning water-circulating pump 51 and the arrival end of the 4th water flow control valve 124 and the phase of the 3rd water flow control valve 123 Even, the arrival end of air-conditioning water-circulating pump 51 is connected with chilled water backwater main 102；The arrival end of hot-water circulating pump 50 and the first water The port of export of flow control valve 121 is connected, and the port of export of hot-water circulating pump 50 is connected with hot water water main 109.

3) port of export of air-conditioning water-circulating pump 51 is connected with the water side entrance end of user side heat exchanger 3, and air-conditioning water-circulating pump 51 enters Mouth end is connected with the 103rd pipeline 103；The arrival end of hot-water circulating pump 50 is connected with hot water backwater's main 108, and hot water is followed The port of export of ring water pump 50 is connected with the water side entrance end of hot-water heater 8 and the 3rd water flow control valve 123.

4) port of export of air-conditioning water-circulating pump 51 is connected with the water side entrance end of user side heat exchanger 3, and air-conditioning water-circulating pump 51 enters Mouth end is connected with the 103rd pipeline 103；The arrival end of hot-water circulating pump 50 is connected with the 105th pipeline 105, hot water The port of export of water circulating pump 50 is connected with the arrival end of the first water flow control valve 121.

5) port of export of air-conditioning water-circulating pump 51 is connected with the water side entrance end of user side heat exchanger 3, and air-conditioning water-circulating pump 51 enters Mouth end is connected with the 103rd pipeline 103；The arrival end of hot-water circulating pump 50 and the port of export phase of the first water flow control valve 121 Even, the port of export of hot-water circulating pump 50 is connected with hot water water main 109.

6) port of export of air-conditioning water-circulating pump 51 is connected with chilled water water main 101, the arrival end of air-conditioning water-circulating pump 51 with The water side outlet end of user side heat exchanger 3 is connected；The arrival end of hot-water circulating pump 50 is connected with hot water backwater's main 108, and hot water is followed The port of export of ring water pump 50 is connected with the water side entrance end of hot-water heater 8 and the 3rd water flow control valve 123.

7) port of export of air-conditioning water-circulating pump 51 is connected with chilled water water main 101, the arrival end of air-conditioning water-circulating pump 51 with The water side outlet end of user side heat exchanger 3 is connected；The arrival end of hot-water circulating pump 50 is connected with the 105th pipeline 105, hot water The port of export of water circulating pump 50 is connected with the arrival end of the first water flow control valve 121.

8) port of export of air-conditioning water-circulating pump 51 is connected with chilled water water main 101, the arrival end of air-conditioning water-circulating pump 51 with The water side outlet end of user side heat exchanger 3 is connected；The arrival end of hot-water circulating pump 50 and the port of export phase of the first water flow control valve 121 Even, the port of export of hot-water circulating pump 50 is connected with hot water water main 109.

The above-described air-conditioning water-circulating pump 51 of the present embodiment, hot-water circulating pump 50 installation site in systems it is all Scheme is also applied for the four-pipe system air-conditioning system described in Fig. 2 of the embodiments of the invention 2 and Figure 10 of embodiment 6.

Embodiment 2

As shown in Fig. 2 the difference of it and four-pipe system air-conditioning system shown in the Fig. 1 of embodiment 1 is：The He of subsystem connecting tube 104 Installation site of second water flow control valve 122 in four-pipe system air-conditioning system is exchanged.It is empty in the system shown in Fig. 2 Water transfer circulating pump 51, the installation site of hot-water circulating pump 50 in systems are identical with the scheme shown in Fig. 1.

Four-pipe system air-conditioning system shown in Fig. 2 is combined with operation of air conditioning systems shown in Fig. 9, can also realize implementation The institute of scheme shown in the Fig. 1 of example 1 is functional, and control method when realizing each function is also identical；In addition, realizing identical function When, the workflow of operation of air conditioning systems shown in Fig. 9 is also same as Example 1.

System shown in Figure 2 is realizing cooling or dehumidification function of the summer to air, summer and transition season constant temperature and humidity work( Workflow of the workflow with the system shown in Figure 1 of embodiment 1 under above-mentioned two function under energy is identical；And can To use identical control method.System shown in Figure 2 is in the case where realizing heating function of the winter to air, winter frost removing function Workflow is as described below.

(1) heating function of the winter to air

As shown in figs. 2 and 9, under this function, the draw heat from environment of heat source side heat exchanger 4 utilizes drawn heat Amount, produces hot water, the hot water produced passes through cooler 100 and reheating again in hot-water heater 8 and user side heat exchanger 3 Device 30 is heated in air conditioner unit 110 to processed air.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is same as Example 1.

Under this function, the workflow of four-pipe system air-conditioning system shown in Fig. 2 is：Hot water goes out from the water side of hot-water heater 8 After the discharge of mouth end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline 103, use are sequentially passed through The water side entrance end of family side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, subsystem connecting tube 104th, hot water water main 109, the 106th pipeline 106, the arrival end of reheater 30, the port of export of reheater 30, the 7th current Control valve 127, the arrival end of cooler 100, the port of export of cooler 100, the 113rd pipeline 113, chilled water backwater main 102nd, the arrival end of air-conditioning water-circulating pump 51, the port of export of air-conditioning water-circulating pump 51, the 3rd water flow control valve 123, return to hot water heating The water side entrance end of device 8.

In the course of work under this function, when air-conditioning water-circulating pump 51 is variable frequency pump, compression mechanism 1 is compressed for frequency conversion During machine, the control method of four-pipe system air-conditioning system shown in the present embodiment Fig. 2 and scheme work under this function shown in the Fig. 1 of embodiment 1 Control method when making is identical.

(2) winter frost removing function

Under this function, stop the air flow of air conditioner unit 110.As shown in figs. 2 and 9, under this function, the winter When season defrosts, the workflow of the operation of air conditioning systems shown in Fig. 9 is same as Example 1.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；The normal work of air-conditioning water-circulating pump 51 Make, hot water circulating pump 50 does not work；First water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, 6th water flow control valve 126, the 7th water flow control valve 127 are closed；Second water flow control valve 122, the 3rd water flow control valve 123 Standard-sized sheet；The control bypass regulator valve 130 of master controller 200 is shown in a fully open operation.

In the course of the work, the workflow of the four-pipe system air-conditioning system shown in Fig. 2 is：Hot water is from the water of hot-water heater 8 After the discharge of side outlet end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline are sequentially passed through 103rd, the water side entrance end of user side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, bypass are adjusted Save valve 130, chilled water backwater main 102, the arrival end of air-conditioning water-circulating pump 51, the port of export of air-conditioning water-circulating pump 51, the 3rd water Flow control valve 123, returns to the water side entrance end of hot-water heater 8.

Air-conditioning water-circulating pump 51, hot-water circulating pump 50 described in embodiment 1 are pacified in four-pipe system air-conditioning system shown in Fig. 1 The all changes scheme of holding position is also applied for the four-pipe system air-conditioning system described in the present embodiment Fig. 2.

Embodiment 3

As shown in figure 3, the difference of it and four-pipe system air-conditioning system shown in the Fig. 1 of embodiment 1 is only：Air-conditioning water-circulating pump 51, The installation site of hot-water circulating pump 50 in systems is different.

In the four-pipe system air-conditioning system shown in the present embodiment Fig. 3, air-conditioning water-circulating pump 51, hot-water circulating pump 50 are being Installation site in system is：The port of export of air-conditioning water-circulating pump 51 is connected with the arrival end of the 4th water flow control valve 124, and air conditioner water is followed The arrival end of ring pump 51 is connected with chilled water backwater main 102 and the 3rd water flow control valve 123；The arrival end of hot-water circulating pump 50 It is connected with the water flow control valve 123 of hot water backwater's main 108 and the 3rd, the port of export of hot-water circulating pump 50 and the water of hot-water heater 8 Side entrance end is connected.

Four-pipe system air-conditioning system shown in Fig. 3 is combined with operation of air conditioning systems shown in Fig. 9, can also realize embodiment The institute of scheme shown in 1 Fig. 1 is functional, when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 and implementation Example 1 is identical.System shown in Figure 3 is realizing cooling or dehumidification function of the summer to air, summer and transition season constant temperature and humidity work( Workflow of the workflow with the system shown in Figure 1 of embodiment 1 under above-mentioned two function under energy is identical；And can To use identical control method.System shown in Figure 3 is in the case where realizing heating function of the winter to air, winter frost removing function Workflow is as described below.

(1) heating function of the winter to air

As shown in figure 3 and 9, under this function, the draw heat from environment of heat source side heat exchanger 4 utilizes drawn heat Amount, produces hot water, the hot water produced passes through cooler 100 and reheating again in hot-water heater 8 and user side heat exchanger 3 Device 30 is heated in air conditioner unit 110 to processed air.

During work, air-conditioning water-circulating pump 51 does not work, the normal work of hot water circulating pump 50；First throttle mechanism 5 is closed, The normal work of second throttle body 7；First water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, 6th water flow control valve 126 is closed；Second water flow control valve 122, the standard-sized sheet of the 3rd water flow control valve 123；7th water flow control valve 127 normal works, usual 7th water flow control valve 127 is two-way electric control valve (or being straight-through electric control valve)；Work When, the 7th water flow control valve 127 is used to adjust the hot water flow by cooler 100 and reheater 30.

Under this function, the workflow of four-pipe system air-conditioning system shown in Fig. 3 is：Hot water goes out from the water side of hot-water heater 8 After the discharge of mouth end, the 105th pipeline 105, subsystem connecting tube 104, the 103rd pipeline 103, user are sequentially passed through The water side entrance end of side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, the second water flow control valve 122nd, hot water water main 109, the 106th pipeline 106, the arrival end of reheater 30, the port of export of reheater 30, the 7th current Control valve 127, the arrival end of cooler 100, the port of export of cooler 100, the 113rd pipeline 113, chilled water backwater main 102nd, the 3rd water flow control valve 123, hot water backwater's main 108, the arrival end of hot water circulating pump 50, the port of export of hot water circulating pump 50, Return to the water side entrance end of hot-water heater 8.

In the course of work under this function, when hot water circulating pump 50 is variable frequency pump, compression mechanism 1 is frequency-changeable compressor When, the control method of four-pipe system air-conditioning system shown in Fig. 3 is as follows：

1) control of master controller 200 bypass regulator valve 130 is closed.

4) in the course of work, the detected chilled water of first pressure sensor 41, the 4th pressure sensor 44 difference is supplied Water conduit tube 101 and confession on hot water backwater's main 108, pressure of return water signal are all delivered to master controller 200, master controller 200 calculate the confession backwater pressure between chilled water water main 101 and hot water backwater's main 108 using two pressure signals Difference, supplies backwater pressure difference as control signal, the working frequency of hot water circulating pump 50 is controlled by master controller 200, i.e., using this： Hot water circulating pump 50 is controlled in the way of frequency conversion to hot water flow.During work, when the reality detected by master controller 200 When border is higher than for backwater pressure difference desired value for backwater pressure difference, then reduce the work frequency of hot water circulating pump 50 by master controller 200 Rate；When the actual confession backwater pressure difference detected by master controller 200 is less than for backwater pressure difference desired value, then pass through main control Device 200 increases the working frequency of hot water circulating pump 50.

Under this function, above-described control method is applied to all schemes of the present embodiment, and the institute of embodiment 4,5 All schemes stated.

(2) winter frost removing function

Under this function, stop the air flow of air conditioner unit 110.As shown in figure 3 and 9, under this function, the winter When season defrosts, the workflow of the operation of air conditioning systems shown in Fig. 9 is same as Example 1.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；Air-conditioning water-circulating pump 51 does not work, The normal work of hot water circulating pump 50；First water flow control valve 121, the second water flow control valve 122, the 4th water flow control valve 124, 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed；3rd water flow control valve 123 Standard-sized sheet；The control bypass regulator valve 130 of master controller 200 is shown in a fully open operation.

During work, the circulating hot water driven by hot water circulating pump 50 is discharged in hot-water heater 8 by compression mechanism 1 Refrigerant vapour heating, but in user side heat exchanger 3, heated hot water releases heat again, in the process compressor Heat produced by the wasted work of structure 1 and the heat drawn from four-pipe system air-conditioning system, pass through system in heat source side heat exchanger 4 Cryogen is used for defrost.

In the course of the work, the workflow of the four-pipe system air-conditioning system shown in Fig. 3 is：Hot water is from the water of hot-water heater 8 Side outlet end discharge after, sequentially pass through the 105th pipeline 105, subsystem connecting tube 104, the 103rd pipeline 103, The water side entrance end of user side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, bypass regulator valve 130th, chilled water backwater main 102, the 3rd water flow control valve 123, hot water backwater's main 108, the arrival end of hot water circulating pump 50, The port of export of hot water circulating pump 50, returns to the water side entrance end of hot-water heater 8.

Under this function, control method when above-described workflow and work is applied to all sides of the present embodiment Case.

In Practical Project, air-conditioning water-circulating pump 51, hot-water circulating pump 50 are in four-pipe system air-conditioning system shown in Fig. 3 Installation site is in addition to the present embodiment schemes described above, also following change programme, and these change programmes can also be real The all the above function of scheme shown in existing the present embodiment Fig. 3, and when realizing each function, its circulation loop and control method Identical, it is distinguished in being only cyclic process, and air-conditioning water-circulating pump 51, hot-water circulating pump 50 are the location of in the circulating cycle not no Together.

The change of air-conditioning water-circulating pump 51, the installation site in four-pipe system air-conditioning system shown in Fig. 3 of hot-water circulating pump 50 Scheme is as described below：

1) port of export of air-conditioning water-circulating pump 51 is connected with the arrival end of the 4th water flow control valve 124, and air-conditioning water-circulating pump 51 enters Mouth end is connected with chilled water backwater main 102 and the 3rd water flow control valve 123；The arrival end of hot-water circulating pump 50 adds with hot water The hot water side outlet end of device 8 is connected, and the port of export of hot-water circulating pump 50 is connected with the 105th pipeline 105.

2) port of export of air-conditioning water-circulating pump 51 is connected with the 103rd pipeline 103 and the 104th pipeline 104, air-conditioning The arrival end of water-circulating pump 51 is connected with the port of export of the 4th water flow control valve 124；The arrival end of hot-water circulating pump 50 and hot water backwater Main 108 is connected with the 3rd water flow control valve 123, the port of export of hot-water circulating pump 50 and the water side entrance end phase of hot-water heater 8 Even.

3) port of export of air-conditioning water-circulating pump 51 is connected with the 103rd pipeline 103 and the 104th pipeline 104, air-conditioning The arrival end of water-circulating pump 51 is connected with the port of export of the 4th water flow control valve 124；The arrival end of hot-water circulating pump 50 and hot water heating The water side outlet end of device 8 is connected, and the port of export of hot-water circulating pump 50 is connected with the 105th pipeline 105.

Embodiment 4

As shown in figure 4, the difference of it and four-pipe system air-conditioning system shown in the Fig. 2 of embodiment 2 is only：Air-conditioning water-circulating pump 51, The installation site of hot-water circulating pump 50 in systems is different.

In the four-pipe system air-conditioning system shown in the present embodiment Fig. 4, air-conditioning water-circulating pump 51, hot-water circulating pump 50 are being Installation site in system is：The port of export of air-conditioning water-circulating pump 51 is connected with the arrival end of the 4th water flow control valve 124, and air conditioner water is followed The arrival end of ring pump 51 is connected with chilled water backwater main 102 and the 3rd water flow control valve 123；The arrival end of hot-water circulating pump 50 It is connected with the water flow control valve 123 of hot water backwater's main 108 and the 3rd, the port of export of hot-water circulating pump 50 and the water of hot-water heater 8 Side entrance end is connected.

Four-pipe system air-conditioning system shown in Fig. 4 is combined with operation of air conditioning systems shown in Fig. 9, can also realize embodiment The institute of scheme shown in 1 Fig. 1 is functional, when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 and implementation Example 1 is identical.System shown in Figure 4 is realizing cooling or dehumidification function of the summer to air, summer and transition season constant temperature and humidity work( Workflow of the workflow with the system shown in Figure 1 of embodiment 1 under above-mentioned two function under energy is identical；And can To use identical control method.System shown in Figure 4 is in the case where realizing heating function of the winter to air, winter frost removing function Workflow is following, described.

(1) heating function of the winter to air

As seen in fig. 4 and 9, under this function, the draw heat from environment of heat source side heat exchanger 4 utilizes drawn heat Amount, produces hot water, the hot water produced passes through cooler 100 and reheating again in hot-water heater 8 and user side heat exchanger 3 Device 30 is heated in air conditioner unit 110 to processed air.

Help herein under energy, the workflow of four-pipe system air-conditioning system shown in Fig. 4 is：Hot water goes out from the water side of hot-water heater 8 After the discharge of mouth end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline 103, use are sequentially passed through The water side entrance end of family side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, subsystem connecting tube 104th, hot water water main 109, the 106th pipeline 106, the arrival end of reheater 30, the port of export of reheater 30, the 7th current Control valve 127, the arrival end of cooler 100, the port of export of cooler 100, the 113rd pipeline 113, chilled water backwater main 102nd, the 3rd water flow control valve 123, hot water backwater's main 108, the arrival end of hot water circulating pump 50, the port of export of hot water circulating pump 50, Return to the water side entrance end of hot-water heater 8.

When hot water circulating pump 50 is variable frequency pump, and compression mechanism 1 is frequency-changeable compressor, the course of work under this function In, control method and the four-pipe system air-conditioning system shown in the Fig. 3 of the embodiment of the present invention 3 of the four-pipe system air-conditioning system shown in Fig. 4 exist Control method when being worked under this function is identical.

(2) winter frost removing function

Under this function, stop the air flow of air conditioner unit 110.As seen in fig. 4 and 9, under this function, the winter When season defrosts, the workflow of the operation of air conditioning systems shown in Fig. 9 is same as Example 1.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；Air-conditioning water-circulating pump 51 does not work, The normal work of hot water circulating pump 50；First water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, 6th water flow control valve 126, the 7th water flow control valve 127 are closed；Second water flow control valve 122, the 3rd water flow control valve 123 Standard-sized sheet；The control bypass regulator valve 130 of master controller 200 is shown in a fully open operation.

In the course of the work, the workflow of the four-pipe system air-conditioning system shown in Fig. 4 is：Hot water is from the water of hot-water heater 8 After the discharge of side outlet end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline are sequentially passed through 103rd, the water side entrance end of user side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, bypass are adjusted Section valve 130, chilled water backwater main 102, the 3rd water flow control valve 123, hot water backwater's main 108, hot water circulating pump 50 enter Mouth end, the port of export of hot water circulating pump 50, return to the water side entrance end of hot-water heater 8.

In Practical Project, air-conditioning water-circulating pump 51, hot-water circulating pump 50 are in four-pipe system air-conditioning system shown in Fig. 4 Installation site is in addition to the present embodiment schemes described above, also following change programme, and these change programmes can also be real The all the above function of scheme shown in existing the present embodiment Fig. 4, and when realizing each function, its circulation loop and control method Identical, it is distinguished in being only cyclic process, and air-conditioning water-circulating pump 51, hot-water circulating pump 50 are the location of in the circulating cycle not no Together.

The change of air-conditioning water-circulating pump 51, the installation site in four-pipe system air-conditioning system shown in Fig. 4 of hot-water circulating pump 50 Scheme is as described below：

2) port of export of air-conditioning water-circulating pump 51 is connected with the 103rd pipeline 103 and the second water flow control valve 122, air-conditioning The arrival end of water-circulating pump 51 is connected with the port of export of the 4th water flow control valve 124；The arrival end of hot-water circulating pump 50 and hot water backwater Main 108 is connected with the 3rd water flow control valve 123, the port of export of hot-water circulating pump 50 and the water side entrance end phase of hot-water heater 8 Even.

3) port of export of air-conditioning water-circulating pump 51 is connected with the 103rd pipeline 103 and the second water flow control valve 122, air-conditioning The arrival end of water-circulating pump 51 is connected with the port of export of the 4th water flow control valve 124；The arrival end of hot-water circulating pump 50 and hot water heating The water side outlet end of device 8 is connected, and the port of export of hot-water circulating pump 50 is connected with the 105th pipeline 105.

Embodiment 5

As shown in figure 5, the difference of it and four-pipe system air-conditioning system shown in the Fig. 4 of embodiment 4 is only：3rd water flow control valve 123 and the installation site of subsystem connecting tube 104 in systems exchanged.

In the four-pipe system air-conditioning system shown in the present embodiment Fig. 5, air-conditioning water-circulating pump 51, hot-water circulating pump 50 are being Installation site in system is：The port of export of air-conditioning water-circulating pump 51 is connected with the arrival end of the 4th water flow control valve 124, and air conditioner water is followed The arrival end of ring pump 51 is connected with chilled water backwater main 102 and subsystem connecting tube 104；The arrival end of hot-water circulating pump 50 with Hot water backwater's main 108 is connected with subsystem connecting tube 104, and the port of export of hot-water circulating pump 50 enters with the water side of hot-water heater 8 Mouth end is connected.

Four-pipe system air-conditioning system shown in Fig. 5 is combined with operation of air conditioning systems shown in Fig. 9, can also realize embodiment The institute of scheme shown in 1 Fig. 1 is functional, when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 and implementation Example 1 is identical.System shown in Figure 5 is realizing cooling or dehumidification function of the summer to air, summer and transition season constant temperature and humidity work( Workflow of the workflow with the system shown in Figure 1 of embodiment 1 under above-mentioned two function under energy is identical；And can To use identical control method.System shown in Figure 5 is in the case where realizing heating function of the winter to air, winter frost removing function Workflow is as described below.

(1) heating function of the winter to air

As shown in figs. 5 and 9, under this function, the draw heat from environment of heat source side heat exchanger 4 utilizes drawn heat Amount, produces hot water, the hot water produced passes through cooler 100 and reheating again in hot-water heater 8 and user side heat exchanger 3 Device 30 is heated in air conditioner unit 110 to processed air.

Under this function, the workflow of four-pipe system air-conditioning system shown in Fig. 5 is：Hot water goes out from the water side of hot-water heater 8 After the discharge of mouth end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline 103, use are sequentially passed through The water side entrance end of family side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, the 3rd flow cavitation result Valve 123, hot water water main 109, the 106th pipeline 106, the arrival end of reheater 30, the port of export of reheater 30, the 7th water Flow control valve 127, the arrival end of cooler 100, the port of export of cooler 100, the 113rd pipeline 113, chilled water backwater are done Pipe 102, subsystem connecting tube 104, hot water backwater's main 108, the arrival end of hot water circulating pump 50, the port of export of hot water circulating pump 50, Return to the water side entrance end of hot-water heater 8.

When hot water circulating pump 50 is variable frequency pump, and compression mechanism 1 is frequency-changeable compressor, the course of work under this function In, control method and the four-pipe system air-conditioning system shown in the Fig. 3 of the embodiment of the present invention 3 of the four-pipe system air-conditioning system shown in Fig. 5 exist Control method when being worked under this function is mutually identical.

(2) winter frost removing function

Under this function, stop the air flow of air conditioner unit 110.As shown in figs. 5 and 9, under this function, the winter When season defrosts, the workflow of the operation of air conditioning systems shown in Fig. 9 is same as Example 1.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；Air-conditioning water-circulating pump 51 does not work, The normal work of hot water circulating pump 50；First water flow control valve 121, the 3rd water flow control valve 123, the 4th water flow control valve 124, 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed；Second water flow control valve 122 Standard-sized sheet；The control bypass regulator valve 130 of master controller 200 is shown in a fully open operation.

During work, go out the circulating hot water of the driving of hot water circulating pump 50, discharged in hot-water heater 8 by compression mechanism 1 Refrigerant vapour heating, but in user side heat exchanger 3, heated hot water releases heat again, in the process compressor Heat produced by the wasted work of structure 1 and the heat drawn from four-pipe system air-conditioning system, pass through system in heat source side heat exchanger 4 Cryogen is used for defrost.

In the course of the work, the workflow of the four-pipe system air-conditioning system shown in Fig. 5 is：Hot water is from the water of hot-water heater 8 After the discharge of side outlet end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline are sequentially passed through 103rd, the water side entrance end of user side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, bypass are adjusted Save valve 130, chilled water backwater main 102, subsystem connecting tube 104, hot water backwater's main 108, the entrance of hot water circulating pump 50 End, the port of export of hot water circulating pump 50, return to the water side entrance end of hot-water heater 8.

In Practical Project, air-conditioning water-circulating pump 51, hot-water circulating pump 50 are in four-pipe system air-conditioning system shown in Fig. 5 Installation site is in addition to the present embodiment schemes described above, also following change programme, and these change programmes can also be real The all the above function of scheme shown in existing the present embodiment Fig. 5, and when realizing each function, its circulation loop and control method Identical, it is distinguished in being only cyclic process, and air-conditioning water-circulating pump 51, hot-water circulating pump 50 are the location of in the circulating cycle not no Together.

The change of air-conditioning water-circulating pump 51, the installation site in four-pipe system air-conditioning system shown in Fig. 5 of hot-water circulating pump 50 Scheme is as described below：

1) port of export of air-conditioning water-circulating pump 51 is connected with the arrival end of the 4th water flow control valve 124, and air-conditioning water-circulating pump 51 enters Mouth end is connected with chilled water backwater main 102 and subsystem connecting tube 104；The arrival end of hot-water circulating pump 50 and hot water heating The water side outlet end of device 8 is connected, and the port of export of hot-water circulating pump 50 is connected with the 105th pipeline 105.

2) port of export of air-conditioning water-circulating pump 51 is connected with the 103rd pipeline 103 and the second water flow control valve 122, air-conditioning The arrival end of water-circulating pump 51 is connected with the port of export of the 4th water flow control valve 124；The arrival end of hot-water circulating pump 50 and hot water backwater Main 108 is connected with subsystem connecting tube 104, the port of export of hot-water circulating pump 50 and the water side entrance end phase of hot-water heater 8 Even.

Embodiment 6

As shown in Figure 10, it is only with the difference of four-pipe system air-conditioning system shown in the Fig. 5 of embodiment 5：Air-conditioning water-circulating pump 51, The installation site of hot-water circulating pump 50 in systems is different.

In the four-pipe system air-conditioning system shown in the present embodiment Figure 10, air-conditioning water-circulating pump 51, hot-water circulating pump 50 exist Installation site in system is：The port of export of air-conditioning water-circulating pump 51 is connected with the arrival end of the 4th water flow control valve 124 and subsystem Pipe 104 is connected, and the arrival end of air-conditioning water-circulating pump 51 is connected with chilled water backwater main 102；The arrival end of hot-water circulating pump 50 with Hot water backwater's main 108 is connected, and the port of export of hot-water circulating pump 50 is connected with the water side entrance end of hot-water heater 8 and subsystem Pipe 104 is connected.

Four-pipe system air-conditioning system shown in Figure 10 is combined with operation of air conditioning systems shown in Fig. 9, can also realize implementation The institute of scheme shown in the Fig. 1 of example 1 is functional, when realizing identical function, the workflow and reality of operation of air conditioning systems shown in Fig. 9 Apply example 1 identical.System shown in Figure 10 is realizing that cooling or dehumidification function of the summer to air, summer and transition season constant temperature are permanent Workflow of the workflow with the system shown in Figure 1 of embodiment 1 under above-mentioned two function under wet function is identical；And Identical control method can also be used.System shown in Figure 10 is realizing heating function of the winter to air, winter frost removing function Under workflow it is as described below.

(1) heating function of the winter to air

As shown in Figure 10 and 9, under this function, the draw heat from environment of heat source side heat exchanger 4 utilizes drawn heat Amount, produces hot water, the hot water produced passes through cooler 100 and reheating again in hot-water heater 8 and user side heat exchanger 3 Device 30 is heated in air conditioner unit 110 to processed air.

Under this function, the workflow of four-pipe system air-conditioning system shown in Figure 10 is：Hot water goes out from the water side of hot-water heater 8 After the discharge of mouth end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline 103, use are sequentially passed through The water side entrance end of family side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, the 3rd flow cavitation result Valve 123, hot water water main 109, the 106th pipeline 106, the arrival end of reheater 30, the port of export of reheater 30, the 7th water Flow control valve 127, the arrival end of cooler 100, the port of export of cooler 100, the 113rd pipe pipe 113, chilled water backwater are done Pipe 102, the arrival end of air-conditioning water-circulating pump 51, the port of export of air-conditioning water-circulating pump 51, subsystem connecting tube 104, return to hot water heating The water side entrance end of device 8.

It is worked under this function when air-conditioning water-circulating pump 51 is variable frequency pump, and compression mechanism 1 is frequency-changeable compressor The control method of four-pipe system air-conditioning system shown in Cheng Zhong, Figure 10 and the four-pipe system air-conditioning system shown in the Fig. 1 of the embodiment of the present invention 1 Control method when system works under this function is identical.

(2) winter frost removing function

Under this function, stop the air flow of air conditioner unit 110.As shown in Figure 10 and 9, under this function, the winter When season defrosts, the workflow of the operation of air conditioning systems shown in Fig. 9 is same as Example 1.

During work, the normal work of first throttle mechanism 5, the standard-sized sheet of second throttle body 7；The normal work of air-conditioning water-circulating pump 51 Make, hot water circulating pump 50 does not work；First water flow control valve 121, the 3rd water flow control valve 123, the 4th water flow control valve 124, 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed；Second water flow control valve 122 Standard-sized sheet；The control bypass regulator valve 130 of master controller 200 is shown in a fully open operation.

In the course of the work, the workflow of the four-pipe system air-conditioning system shown in Figure 10 is：Hot water is from the water of hot-water heater 8 After the discharge of side outlet end, the 105th pipeline 105, the second water flow control valve 122, the 103rd pipeline are sequentially passed through 103rd, the water side entrance end of user side heat exchanger 3, the water side outlet end of user side heat exchanger 3, chilled water water main 101, bypass are adjusted Save valve 130, chilled water backwater main 102, the arrival end of air-conditioning water-circulating pump 51, the port of export of air-conditioning water-circulating pump 51, subsystem Connecting tube 104, returns to the water side entrance end of hot-water heater 8.

In practical application, the air-conditioning water-circulating pump 51, hot-water circulating pump 50 described in embodiment 1 are in four pipe shown in Fig. 1 The all changes scheme of installation site is also applied for the four-pipe system air-conditioning system described in the present embodiment Figure 10 in air-conditioning system processed.

Embodiment 7

As shown in figure 11, it is only with the difference of four-pipe system air-conditioning system shown in the Fig. 3 of embodiment 3：In four shown in Figure 11 In control air-conditioning system, the 4th current in four-pipe system air-conditioning system shown in the Fig. 3 of embodiment 3 are instead of with a non-return valve 109 Control valve 124.After instead, the connected mode of non-return valve 109 in systems is：The port of export of non-return valve 109 is what is replaced The port of export of 4th water flow control valve 124；The arrival end of non-return valve 109 is the entrance of the 4th replaced water flow control valve 124 End.

As shown in figure 11, connected mode of the non-return valve 10 in four-pipe system air-conditioning system shown in Figure 11 is：Non-return valve 109 The port of export be connected with the 103rd pipeline 103, the arrival end of non-return valve 109 passes sequentially through air-conditioning water-circulating pump 51 and exported End, the arrival end of air-conditioning water-circulating pump 51 are connected with chilled water backwater main 102.

Four-pipe system air-conditioning system shown in the present embodiment Figure 11 is combined with operation of air conditioning systems shown in Fig. 9, also may be used To realize that the institute of four-pipe system air-conditioning system shown in the Fig. 3 of embodiment 3 is functional, when realizing identical function, its workflow and control Workflow and control method of the method processed also with four-pipe system air-conditioning system shown in the Fig. 3 of embodiment 3 are identical.

The above-described scheme for substituting the 4th water flow control valve 124 with non-return valve 109 of the present embodiment is also applied for implementing All changes scheme described in example 3, and all schemes described in embodiment 4,5；And substitute the 4th water with non-return valve 109 Flow control valve 124, can realize that the institute of former scheme is functional, when realizing identical function, its workflow and control method Workflow and control method with former scheme is identical.

As shown in figure 11, an auxiliary thermal source 20 is provided with hot water water main 109, when system is in summer and transition Season constant temperature and humidity function, or winter to being worked under the heating function of air when, if operation of air conditioning systems shown in Fig. 9 When can not meet the thermal load demands of user, the heat of deficiency is supplemented using auxiliary thermal source 20, auxiliary thermal source 20 can be heat Pump, fuel oil or gas fired-boiler, even electric heater etc..Scheme described above is applied to described in all embodiments of the present invention All schemes.

In the scheme of above-mentioned all embodiments, user side heat exchanger 3 is as refrigerant-water- to-water heat exchanger, generally using board-like Any one in heat exchanger, volumetric heat exchanger, shell and tube exchanger or double pipe heat exchanger.

In the scheme of above-mentioned all embodiments, heat source side heat exchanger 4 in addition to it can be refrigerant-air heat exchanger, It can also be refrigerant-soil heat exchanger, refrigerant-water- to-water heat exchanger, can also be evaporating heat exchanger, alternatively, it is also possible to be The heat exchanger of other species；During as refrigerant-water- to-water heat exchanger, heat source side heat exchanger 4 is generally using plate type heat exchanger, volume Any one in formula heat exchanger, shell and tube exchanger or double pipe heat exchanger.

In the scheme of above-mentioned all embodiments, when hot-water heater 8 is as refrigerant-water- to-water heat exchanger, generally using volume Any one in formula heat exchanger, plate type heat exchanger, shell and tube exchanger or double pipe heat exchanger, or it is as needed other The heat exchanger of species.

It is described finned generally using finned heat exchanger when heat source side heat exchanger 4 is as refrigerant-air heat exchanger The fin of heat exchanger is generally aluminum or aluminum alloy material, and copper material is also used in some special occasions.The shape of fin is usual Using any one in plate, ripple type or slitted fin type.

In the scheme of above-mentioned all embodiments, described the first water flow control valve 121, the second water flow control valve the 122, the 3rd In water flow control valve 123, the 4th water flow control valve 124 any one, even aforementioned four water flow control valve, can adopt Any one replacement with magnetic valve or in the flow control device with turn-off function, for example：Two-way electric control valve.

In 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 any one, very To above three water flow control valve, any one replacement, example in the flow control device with turn-off function can be used Such as：Two-way electric control valve.

Claims

1. a kind of four-pipe system air-conditioning system, includes user side heat exchanger (3), the hot water of operation of air conditioning systems of operation of air conditioning systems Heater (8), the first water flow control valve (121), the second water flow control valve (122), the 3rd water flow control valve (123), the 4th water Flow control valve (124), the 5th water flow control valve (125), subsystem connecting tube (104), at least one cooler (100) and at least One reheater (30)；

User side heat exchanger (3), the 4th water flow control valve (124), the 5th water flow control valve (125) of the operation of air conditioning systems The freezing water subsystem of four-pipe system air-conditioning system is constituted with least one cooler (100)；

User side heat exchanger (3) the water side entrance end sequentially passes through the 103rd pipeline (103), the 4th water flow control valve (124) port of export, the 4th water flow control valve (124) arrival end are connected with chilled water backwater main (102), the user side heat exchange Device (3) water side outlet end is connected with chilled water water main (101), and cooler (100) the water side outlet end passes through the 100th 13 pipelines (113) are connected with chilled water backwater main (102), and cooler (100) the water side entrance end sequentially passes through institute State the 5th water flow control valve (125) port of export, the 5th water flow control valve (125) arrival end and the chilled water water main (101) it is connected；

The hot-water heater (8) of the operation of air conditioning systems, the first water flow control valve (121), the 6th water flow control valve (126) and At least one reheater (30) constitutes the hot water subsystem of four-pipe system air-conditioning system；

Hot-water heater (8) the water side entrance end is connected with hot water backwater's main (108), hot-water heater (8) the water side The port of export sequentially passes through the 105th pipeline (105), the first water flow control valve (121) arrival end, the first water flow control valve (121) port of export is connected with hot water water main (109), and reheater (30) the water side entrance end passes through the 106th pipeline (106) it is connected with the hot water water main (109), reheater (30) the water side outlet end sequentially passes through the 112nd Pipeline (112), the 6th water flow control valve (126) are connected with hot water backwater's main (108)；

112nd pipeline of described 7th water flow control valve (127) one end and the reheater (30) water side outlet end (112) it is connected, the 7th water flow control valve (127) other end and the cooler (100) water side entrance end and the 5th current Pipeline between control valve (125) port of export is connected；

Described second water flow control valve (122) one end is connected with the chilled water water main (101), second flow cavitation result Valve (122) other end is connected with the first water flow control valve (121) port of export pipeline；

Described 3rd water flow control valve (123) one end is connected with the 4th water flow control valve (124) the arrival end pipeline, and described Three water flow control valves (123) other end is connected with the hot-water heater (8) water side entrance end pipe road；

Described subsystem connecting tube (104) one end and user side heat exchanger (3) the water side entrance end and the 4th water flow control valve (124) the 103rd pipeline (103) between the port of export is connected, subsystem connecting tube (104) other end and the heat The 105th pipeline (105) phase between water heater (8) water side outlet end and the first water flow control valve (121) arrival end Even.

2. a kind of four-pipe system air-conditioning system, includes user side heat exchanger (3), the hot water of operation of air conditioning systems of operation of air conditioning systems Heater (8), the first water flow control valve (121), the second water flow control valve (122), the 3rd water flow control valve (123), the 4th water Flow control valve (124), the 5th water flow control valve (125), subsystem connecting tube (104), at least one cooler (100) and at least One reheater (30)；

Described second water flow control valve (122) one end and user side heat exchanger (3) the water side entrance end and the 4th flow cavitation result The 103rd pipeline (103) between valve (124) port of export is connected, the second water flow control valve (122) other end and institute State the 105th pipeline (105) between hot-water heater (8) water side outlet end and the first water flow control valve (121) arrival end It is connected；

Described subsystem connecting tube (104) one end is connected with the chilled water water main (101), the subsystem connecting tube (104) other end is connected with the first water flow control valve (121) port of export pipeline.

3. a kind of four-pipe system air-conditioning system, includes user side heat exchanger (3), the hot water of operation of air conditioning systems of operation of air conditioning systems Heater (8), the first water flow control valve (121), the second water flow control valve (122), the 3rd water flow control valve (123）, the 5th water Flow control valve (125), the 4th water flow control valve (124), subsystem connecting tube (104), at least one cooler (100) and at least One reheater (30)；

Described 3rd water flow control valve (123) one end is connected with the chilled water water main (101), the 3rd flow cavitation result Valve (123) other end is connected with the first water flow control valve (121) port of export pipeline；

Described subsystem connecting tube (104) one end is connected with the 4th water flow control valve (124) the arrival end pipeline, the subsystem System connecting tube (104) other end is connected with the hot-water heater (8) water side entrance end pipe road.

4. the four-pipe system air-conditioning system according to any claim in claims 1 to 3, it is characterised in that a bypass regulation Valve (130) arrival end is connected with the chilled water water main (101), bypass regulator valve (130) port of export with it is described cold Freeze water backwater main (102) to be connected.

5. the four-pipe system air-conditioning system according to any claim in claims 1 to 3, it is characterised in that described cooling Device (100), reheater (30) are arranged in same air conditioner unit (110), and along the flow direction of air, the reheater (30) it is in the downwind side of the cooler (100).

6. the four-pipe system air-conditioning system according to any claim in claims 1 to 3, it is characterised in that described the 5th Water flow control valve (125) is two-way electric control valve.

7. the four-pipe system air-conditioning system according to any claim in claims 1 to 3, it is characterised in that described the 6th Water flow control valve (126) is two-way electric control valve.

8. the four-pipe system air-conditioning system according to any claim in claims 1 to 3, it is characterised in that described the 7th Water flow control valve (127) is two-way electric control valve.

9. the four-pipe system air-conditioning system according to any claim in claims 1 to 3, it is characterised in that described first In water flow control valve (121), the second water flow control valve (122), the 3rd water flow control valve (123), the 4th water flow control valve (124) Any one be magnetic valve.

10. four-pipe system air-conditioning system according to claim 4, it is characterised in that the bypass regulator valve (130) is two-way Electric control valve.