CN103615837A

CN103615837A - Four-pipe air conditioning system

Info

Publication number: CN103615837A
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: 2014-03-05
Anticipated expiration: 2033-11-26
Also published as: CN103322726A; CN103615837B

Abstract

The invention discloses a four-pipe air conditioning system which comprises a user side heat exchanger of an air conditioning refrigeration device, a hot water heater of the air conditioning refrigeration device, a first water flow control valve, a second water flow control valve, a third water flow control valve, a fourth water flow control valve, a fifth water flow control valve, a sixth water flow control valve, a seventh water flow control valve, a subsystem connecting pipe, at least one cooler and at least one reheater. The user side heat exchanger of the air conditioning refrigeration device, the fourth water flow control valve, the fifth water flow control valve and the cooler form a chilled water subsystem of the four-pipe air conditioning system. The hot water heater of the air conditioning refrigeration device, the first water flow control valve, the sixth water flow control valve and the reheater form a hot water subsystem of the four-pipe air conditioning system. The cold and heat demands of the air conditioning system in the air-processing process can be met at the same time through one air conditioning refrigeration device. The four-pipe air conditioning system is particularly suitable for being used in air conditioning occasions on which temperature and humidity need to meet demands and all air conditioning rooms need to be independently controlled.

Description

Four control air-conditioning systems

Technical field

The present invention relates to the four control air-conditioning systems that a kind of operation of air conditioning systems by having while heating and cooling function drives, belong to air-conditioning technical field.

Background technology

The present patent application people is disclosed on 08 01st, 2012, application number is that 201210093904.4 patent of invention has proposed a kind of airhandling equipment water system, its system composition and air conditioner unit are as Fig. 7, shown in 8, as can be seen from the figure the air conditioner unit of this airhandling equipment water system (as shown in Figure 8) adds in the process of hot-air in the winter time, first the hot water that temperature is higher enter the intake air that cooler 100 and temperature are lower and carry out heat exchange, emit after heat water temperature reduces, enter again reheater 30 with from cooler 100, air after temperature raises carries out heat exchange, as can be seen here, in hot water and the air heat exchanging process in air conditioner unit (as shown in Figure 8), owing to not being countercurrent flow, the entrained heat of hot water can not effectively be emitted, air can not obtain higher temperature after being heated simultaneously, therefore affected the operating efficiency of whole airhandling equipment water system.

Similarly situation is also present in the patent of invention that the present patent application people is disclosed on 06 12nd, 2013, application number is 201310053820.2 (as shown in figure 12).As shown in figure 12, in the course of work, when air-conditioning equipment 100, hot water heater 30 is wherein respectively Air-Water heat exchanger, and while forming air conditioner unit as shown in Figure 8, add in the winter time in the process of hot-air, hot water and air owing to can not forming countercurrent flow, therefore can affect equally the operating efficiency of whole air conditioner unit in air conditioner unit (as shown in Figure 8).(shown in its Figure of description 5) same case so also existing in another patent of invention that the present patent application people is disclosed on 07 11st, 2012, application number is 201210044815.0.

Summary of the invention

The object of this invention is to provide a kind ofly provides cold and hot amount by operation of air conditioning systems simultaneously, and in air conditioner unit heating process in winter, can realize four control air-conditioning systems of countercurrent flow process between water and air

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

1, four control air-conditioning systems, comprise user's side heat exchanger (3) of operation of air conditioning systems, the hot-water heater (8) of operation of air conditioning systems, 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 tube connector (104), at least one cooler (100) and at least one reheater (30);

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

User's side heat exchanger (3) of described operation of air conditioning systems, the 4th water flow control valve (124), the 5th water flow control valve (125) and at least one cooler (100) form the chilled water subsystem of four control air-conditioning systems;

Described user's side heat exchanger (3) water side entrance end is successively through the 103 pipeline (103), the 4th water flow control valve (124) port of export, the 4th water flow control valve (124) arrival end is connected with chilled water backwater main (102), described user's side heat exchanger (3) water side outlet end is connected with chilled water water main (101), described cooler (100) water side outlet end is connected with chilled water backwater main (102) by the 113 pipeline (113), described cooler (100) water side entrance end passes through described the 5th water flow control valve (125) port of export successively, the 5th water flow control valve (125) arrival end is connected with described chilled water water main (101),

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

Described hot-water heater (8) water side entrance end is connected with hot water backwater's main (108), described hot-water heater (8) water side outlet end is successively through the 105 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), described reheater (30) water side entrance end is connected with described hot water water main (109) by the 106 pipeline (106), described reheater (30) water side outlet end is successively through the 112 pipeline (112), the 6th water flow control valve (126) is connected with described hot water backwater's main (108),

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

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

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

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

2, four control air-conditioning systems, comprise user's side heat exchanger (3) of operation of air conditioning systems, the hot-water heater (8) of operation of air conditioning systems, 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 tube connector (104), at least one cooler (100) and at least one reheater (30);

Described the second water flow control valve (122) one end is connected with the 103 pipeline (103) between described user's side heat exchanger (3) water side entrance end and the 4th water flow control valve (124) port of export, and described the second water flow control valve (122) other end is connected with the 105 pipeline (105) between described hot-water heater (8) water side outlet end and the first water flow control valve (121) arrival end;

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

3, four control air-conditioning systems, comprise user's side heat exchanger (3) of operation of air conditioning systems, the hot-water heater (8) of operation of air conditioning systems, 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 tube connector (104), at least one cooler (100) and at least one reheater (30);

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

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

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

1. by an operation of air conditioning systems, can meet the cold heat demand of air-conditioning system in air handling process simultaneously;

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

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

4. the present invention is applicable to the central air conditioner system of industry and civil area, is specially adapted to humidity and temperature to have the occasion of demand.

Accompanying drawing explanation

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

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

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

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

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

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

Fig. 7 is the airhandling 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 matching with the present invention;

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

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

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

The specific embodiment

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

Shown in Fig. 9, be a kind of operation of air conditioning systems that simultaneously supplies cold-peace heat supply function that has, be used to the embodiment of the present invention 1 to 5 respectively described four control air-conditioning systems the required cold and hot amount of air of processing is provided.

Operation of air conditioning systems shown in Fig. 9 comprises following part: compressing mechanism 1, cross valve 2, first throttle mechanism 5, the second throttle mechanism 7, user's side heat exchanger 3, heat source side heat exchanger 4, hot-water heater 8, the first check valve 21, the second check valve 22 and the 3rd check valve 23; First throttle mechanism 5, the second throttle mechanism 7 are electric expansion valve; User's side heat exchanger 3 is cold-producing medium-water-to-water heat exchangers, and the needs according to processing air, can be used for producing chilled water or hot water; Heat source side heat exchanger 4 is cold-producing medium-air heat exchangers, both can be used as condenser, in environment, distributes the condensation heat that refrigeration produces, and also can be used as evaporimeter, absorbs heat from environment; Hot-water heater 8 is also a cold-producing medium-water-to-water heat exchanger, is used to the whole year four control air-conditioning systems to produce hot water.

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

The high pressure node 71 of cross valve 2 is connected with compressing mechanism 1 port of export by the 60 pipeline 60, the low pressure node 73 of cross valve 2 is connected with compressing mechanism 1 arrival end by the 63 pipeline 63, any one node 72 in 2 two commutation nodes of cross valve is successively by the 64 pipeline 64, second check valve 22 ports of export, the second check valve 22 arrival ends, the 66 pipeline 66, first throttle mechanism 5, the 62 pipeline 62, the 3rd check valve 23 arrival ends, the 3rd check valve 23 ports of export, first check valve 21 ports of export, the first check valve 21 arrival ends are connected with the 64 pipeline 64 of second check valve 22 ports of export,

Hot-water heater 8 refrigerant side arrival ends are connected with the pipeline between first check valve 21 ports of export and the 3rd check valve 23 ports of export by the 69 pipeline 69, and the hot-water heater 8 refrigerant side ports of export are connected with the 66 pipeline 66 between the second check valve 22 arrival ends and first throttle mechanism 5 through the 68 pipeline 68, the second throttle mechanism 7, heat source side heat exchanger 4 arrival ends, heat source side heat exchanger 4 ports of export, the 70 pipeline 70 successively;

Another commutation node 74 of cross valve 2 is connected by any one connected node in two connected nodes of the 61 pipeline 61 and user's side heat exchanger 3 refrigerant side, and another connected node of user's side heat exchanger 3 refrigerant sides is connected with the 62 pipeline 62 between the 3rd check valve 23 arrival ends and first throttle mechanism 5.

The air conditioner unit 110 that is in four control air-conditioning systems of the present invention, utilizes chilled water that the operation of air conditioning systems shown in Fig. 9 produces and hot water, air is processed shown in Fig. 6; It is applicable to the described all four control air-conditioning systems of the embodiment of the present invention 1 to 5 difference.

As shown in Figure 6, air conditioner unit 110 comprises at least one cooler 100 and at least one reheater 30; The composition proposal of air conditioner unit 110 is: cooler 100, reheater 30 are arranged in same air conditioner unit 110, and along the flow direction of air, the downwind side of reheater 30 in cooler 100.

In the course of work of air conditioner unit 110, for the wet bulb of processed air and dry-bulb temperature are controlled, as shown in Figure 6, have additional two temperature-detecting devices, that is: the first temperature-detecting device 91 and the second temperature-detecting device 92; During work, the first temperature-detecting device 91 is for detection of the wet-bulb temperature of processed air, and the second temperature-detecting device 92 is for detection of the dry-bulb temperature of processed air.

The first temperature-detecting device 91 and the setting position of the second temperature-detecting device 92 in air conditioner unit 110 have following several scheme:

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

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

4) along the flow direction of air, the first temperature-detecting device 91, the second temperature-detecting device 92 are all arranged at the inlet side of cooler 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, and the second temperature-detecting device 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, and the second temperature-detecting device 92 is arranged at the inlet side of cooler 100.

Embodiment 1

Four control air-conditioning systems shown in Fig. 1 comprise chilled water subsystem and hot water subsystem two parts.Two subsystems comprise following part: user's side heat exchanger 3 of operation of air conditioning systems, the hot-water heater 8 of operation of air conditioning systems, reheater 30, hot water circulating pump 50, air conditioner water circulating pump 51, cooler 100, 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, the 6th water flow control valve 126, the 7th water flow control valve 127.

In four control air-conditioning systems shown in Fig. 1, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are: air conditioner water circulating pump 51 ports of export are connected with the 3rd water flow control valve 123 with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with the 3rd water flow control valve 123 with hot-water heater 8 water side entrance ends.

In whole year operation process, four control air-conditioning systems shown in Fig. 1, and in the course of the work for it provides the operation of air conditioning systems shown in Fig. 9 of cold and hot amount, can realize following functions, when realizing each function, the workflow of four control air-conditioning systems shown in the associated Fig. 1 of the operation of air conditioning systems shown in Fig. 9 and the present embodiment is as described below respectively.

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

Under this function, 110 pairs of processed air of the air conditioner unit shown in Fig. 6 carry out cooling or cooling and dehumidifying to be processed, and is cooled or the air of cooling and dehumidifying after processing do not require heat again.

As shown in Fig. 1 and 9, under this function, user's side heat exchanger 3 is for the production of chilled water, and the chilled water of producing carries out cooling or cooling and dehumidifying by 100 pairs of air of the cooler in air conditioner unit 110 to be processed; The condensation heat that operation of air conditioning systems produces in producing chilled water process does not reclaim, but is all discharged in surrounding environment by heat source side heat exchanger 4.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; Hot water circulating pump 50 is not worked, 51 normal operations of air conditioner water circulating pump; The first water flow control valve 121, the second water flow control valve 122, the 3rd water flow control valve 123, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed; The 4th water flow control valve 124 standard-sized sheets; The 5th water flow control valve 125 normal operations, common the 5th water flow control valve 125 is two-way electric control valve (or being called straight-through electric control valve), during work, for regulating the chilled-water flow that enters cooler 100.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, cross valve 2 high pressure nodes 71, cross valve 2 commutation nodes 72, the 64 pipeline 64, the first check valve 21 arrival ends, first check valve 21 ports of export, the 69 pipeline 69, hot-water heater 8 refrigerant side arrival ends, the hot-water heater 8 refrigerant side ports of export, the 68 pipeline 68, the second throttle mechanism 7, heat source side heat exchanger 4 arrival ends, heat source side heat exchanger 4 ports of export, the 70 pipeline 70, the 66 pipeline 66, first throttle mechanism 5, the 62 pipeline 62, enter the refrigerant side of user's side heat exchanger 3, by user's side heat exchanger 3 and water, carry out heat exchange, cold-producing medium absorb heat, from the refrigerant side of user's side heat exchanger 3 out, again successively through the 61 pipeline 61, cross valve 2 commutation nodes 74, cross valve 2 low pressure node the 73, the 63 pipelines 63, get back to compressing mechanism 1 arrival end, so far complete once circulation.

Under this function, hot water subsystem in four control air-conditioning systems shown in Fig. 1 is not worked, the workflow of the chilled water subsystem in four control air-conditioning systems shown in Fig. 1 is as described below: chilled water is from user's side heat exchanger 3 water side outlet ends are discharged, pass through successively chilled water water main 101, the 5th water flow control valve 125 arrival ends, the 5th water flow control valve 125 ports of export, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipeline 113, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, the 4th water flow control valve 124 arrival ends, the 4th water flow control valve 124 ports of export, the 103 pipeline 103, get back to user's side heat exchanger 3 water side entrance ends.

Control method when four control air-conditioning systems are worked under this function shown in Fig. 1 is as described below.

Scheme one

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

1) while working, the 5th water flow control valve 125 is usingd the dry-bulb temperature of the processed air that the second temperature-detecting device 92 detected as control signal, regulate the valve opening size of the 5th water flow control valve 125, that is: regulate by the chilled-water flow of cooler 100, thus the cold of change cooling-air; During work, the dry-bulb temperature of the processed air detecting when the second temperature-detecting device 92 is during lower than dry-bulb temperature desired value, reduce the valve opening of the 5th water flow control valve 125, the dry-bulb temperature of the processed air detecting when the second temperature-detecting device 92 during higher than dry-bulb temperature desired value, increases the valve opening of the 5th water flow control valve 125.

2) in the course of work, using and be located at chilled water supply water temperature that the chilled water supply water temperature sensor 400 of user's side heat exchanger 3 water side outlet ends detected as control signal, the operating frequency of controlling compressing mechanism 1 by master controller 200, that is: compressing mechanism 1 is controlled the chilled water supply water temperature of user's side heat exchanger 3 water side outlet ends in the mode of frequency conversion.During work, the actual chilled water supply water temperature of the user's side heat exchanger 3 water side outlet ends that detect when chilled water supply water temperature sensor 400 during higher than chilled water supply water temperature desired value, increases the operating frequency of compressing mechanisms 1 by master controller 200; The actual chilled water supply water temperature of the user's side heat exchanger 3 water side outlet ends that detect when chilled water supply water temperature sensor 400 during lower than chilled water supply water temperature desired value, reduces the operating frequency of compressing mechanism 1 by master controller 200.

Scheme two

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

1) while working, the 5th water flow control valve 125 is usingd the wet-bulb temperature of the processed air that the first temperature-detecting device 91 detected as control signal, by air conditioner unit controller 300, regulate the valve opening size of the 5th water flow control valve 125, that is: regulate by the chilled-water flow of cooler 100, thus the cold of adjusting cooling-air, during work, the actual wet-bulb temperature data of the processed air that the first temperature-detecting device 91 detects are delivered to air conditioner unit controller 300, the actual wet-bulb temperature of the processed air detecting when the first temperature-detecting device 91 is during lower than wet-bulb temperature desired value, by air conditioner unit controller 300, reduce the valve opening of the 5th water flow control valve 125, the actual wet-bulb temperature of the processed air detecting when the first temperature-detecting device 91 is during higher than wet-bulb temperature desired value, by air conditioner unit controller 300, increase the valve opening of the 5th water flow control valve 125.

In above two control programs, air conditioner water circulating pump 51 is constant speed water pump, and requiring the chilled-water flow by user's side heat exchanger 3 water sides is definite value, therefore, when 125 pairs of chilled-water flows of the 5th water flow control valve carry out variable-flow adjusting, as shown in Figure 1, in the course of work, unnecessary chilled water is to be back to chilled water backwater main 102 from chilled water water main 101 bypass by bypass regulator valve 130, and the chilled-water flow that maintains user's side heat exchanger 3 water sides of take is definite value.

Now, the connected mode of bypass regulator valve 130 in system is: bypass regulator valve 130 arrival ends are connected with chilled water water main 101, and bypass regulator valve 130 ports of export are connected with chilled water backwater main 102.

During work, the first pressure sensor 41 is for detection of the chilled water pressure of supply water on chilled water water main 101; The second pressure sensor 42 is for detection of the chilled water pressure of return water on chilled water backwater main 102; The chilled water detecting supplies, pressure of return water is all fed to master controller 200, and the actual chilled water that confession, the pressure of return water that master controller 200 utilizes the first pressure sensor 41, the second pressure sensor 42 to detect calculates between chilled water water main 101 and chilled water backwater main 102 supplies backwater pressure reduction.

In the course of the work, when actual chilled water supplies backwater pressure reduction desired value for backwater pressure reduction lower than chilled water, by master controller 200, controlling bypass regulator valve 130 closes, when actual chilled water supplies backwater pressure reduction desired value for backwater pressure reduction higher than chilled water, by master controller 200, regulate the valve opening of bypass regulator valve 130, make the actual chilled water between chilled water water main 101 and chilled water backwater main 102 equal chilled water for backwater pressure reduction desired value for backwater pressure reduction.

While working under this function, above-described control method is applicable to scheme described in all embodiment of the present invention.

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

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

As shown in Fig. 1 and 9, under this function, user's side heat exchanger 3 is for the production of chilled water, and the chilled water of producing carries out cooling and dehumidifying processing by 100 pairs of processed air of the cooler in air conditioner unit 110; Hot-water heater 8 utilizes the operation of air conditioning systems shown in Fig. 9 in producing the process of chilled water, the partial condensation heat producing is produced hot water, reheater 30 in the hot water recycling air conditioner unit 110 of producing, carries out heat again to the air being cooled after dehumidification treatments; Another partial condensation heat enters environment by heat source side heat exchanger 4.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; Hot

water circulating pump

50,51 normal operations of air conditioner water circulating pump; The first water flow control valve 121, the 4th water flow control valve 124 standard-sized sheets; The second water flow control valve 122, the 3rd water flow control valve 123, the 7th water flow control valve 127 are closed; The 5th water flow control valve 125, the 6th water flow control valve 126 normal operations, common the 5th water flow control valve 125, the 6th water flow control valve 126 are all two-way electric control valve (or being called straight-through electric control valve); During work, the 5th water flow control valve 125 is for regulating the chilled-water flow that enters cooler 100, and the 6th water flow control valve 126 is for regulating the hot water flow that enters reheater 30.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, cross valve 2 high pressure nodes 71, cross valve 2 commutation nodes 72, the 64 pipeline 64, the first check valve 21 arrival ends, first check valve 21 ports of export, the 69 pipeline 69, hot-water heater 8 refrigerant side arrival ends, the hot-water heater 8 refrigerant side ports of export, the 68 pipeline 68, the second throttle mechanism 7, heat source side heat exchanger 4 arrival ends, heat source side heat exchanger 4 ports of export, the 70 pipeline 70, the 66 pipeline 66, first throttle mechanism 5, the 62 pipeline 62, enter the refrigerant side of user's side heat exchanger 3, by user's side heat exchanger 3 and water, carry out heat exchange, cold-producing medium absorb heat, from the refrigerant side of user's side heat exchanger 3 out, more successively through the 61 pipeline 61, cross valve 2 commutation nodes 74, cross valve 2 low pressure node the 73, the 63 pipelines 63, get back to compressing mechanism 1 arrival end.

Under this function, the hot water subsystem of four control air-conditioning systems shown in Fig. 1 and the workflow of chilled water subsystem are as described below respectively.

The workflow of hot water subsystem is: hot water is from hot-water heater 8 water side outlet ends are discharged, through the 105 pipeline 105, the first water flow control valve 121 arrival ends, first water flow control valve 121 ports of export, hot water water main the 109, the 106 pipeline 106, reheater 30 arrival ends, reheater 30 ports of export, the 112 pipeline 112, the 6th water flow control valve 126, hot water backwater's main 108, hot water circulating pump 50 arrival ends, hot water circulating pump 50 ports of export, get back to hot-water heater 8 water side entrance ends successively.

The workflow of chilled water subsystem is: chilled water is from user's side heat exchanger 3 water side outlet ends are discharged, pass through successively chilled water water main 101, the 5th water flow control valve 125 arrival ends, the 5th water flow control valve 125 ports of export, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipeline 113, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, the 4th water flow control valve 124 arrival ends, the 4th water flow control valve 124 ports of export, the 103 pipeline 103, get back to user's side heat exchanger 3 water side entrance ends.

Under this function, when hot water circulating pump 50, air conditioner water circulating pump 51 are constant speed water pump, when compressing mechanism 1 is frequency-changeable compressor, the control method of scheme shown in Fig. 1 is as follows:

2) while working, the 6th water flow control valve 126 is usingd the dry-bulb temperature of the processed air that the second temperature-detecting device 92 detected as control signal, by air conditioner unit controller 300, regulate the valve opening size of the 6th water flow control valve 126, that is: regulate by the hot water flow of reheater 30, thereby regulate the heat that adds hot-air, during work, the actual dry-bulb temperature data of the processed air that the second temperature-detecting device 92 detects are delivered to air conditioner unit controller 300, the actual dry-bulb temperature of the processed air detecting when the second temperature-detecting device 92 is during lower than dry-bulb temperature desired value, by air conditioner unit controller 300, increase the valve opening of the 6th water flow control valve 126, the actual dry-bulb temperature of the processed air detecting when the second temperature-detecting device 92 is during higher than dry-bulb temperature desired value, by air conditioner unit controller 300, reduce the valve opening of the 6th water flow control valve 126.

3) in the course of work, using and be located at chilled water supply water temperature that the chilled water supply water temperature sensor 400 of user's side heat exchanger 3 water side outlet ends detected as control signal, the operating frequency of controlling compressing mechanism 1 by master controller 200, that is: compressing mechanism 1 is controlled the chilled water supply water temperature of user's side heat exchanger 3 water side outlet ends in the mode of frequency conversion.During work, the actual chilled water supply water temperature of the user's side heat exchanger 3 water side outlet ends that detect when chilled water supply water temperature sensor 400 during higher than chilled water supply water temperature desired value, increases the operating frequency of compressing mechanisms 1 by master controller 200; The actual chilled water supply water temperature of the user's side heat exchanger 3 water side outlet ends that detect when chilled water supply water temperature sensor 400 during lower than chilled water supply water temperature desired value, reduces the operating frequency of compressing mechanism 1 by master controller 200.

Under this function, the effect of bypass regulator valve 130 and control method are identical to the cooling or dehumidification function of air with summer.In addition, while working under this function, above-described control method is applicable to scheme described in all embodiment of the present invention.

(3) winter the heating function to air

As shown in Fig. 1 and 9, under this function, heat source side heat exchanger 4 draw heat from environment, utilize the heat of drawing, in hot-water heater 8 and user's side heat exchanger 3, produce hot water, the hot water of producing heats processed air in air conditioner unit 110 by cooler 100 and reheater 30 again.

During work, 51 normal operations of air conditioner water circulating pump, hot water circulating pump 50 is not worked; First throttle mechanism 5 closes, the second throttle mechanism 7 normal operations; The first water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, the 6th water flow control valve 126 are closed; The second water flow control valve 122, the 3rd water flow control valve 123 standard-sized sheets; The 7th water flow control valve 127 normal operations, common the 7th water flow control valve 127 is two-way electric control valve (or being called straight-through electric control valve); During work, the 7th water flow control valve 127 is for regulating by the hot water flow of cooler 100 and reheater 30.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, cross valve 2 high pressure nodes 71, cross valve 2 commutation nodes 74, the 61 pipeline 61, enters the refrigerant side of user's side heat exchanger 3 and the water in airhandling equipment water system and carries out heat exchange, emits heat, from the refrigerant side of user's side heat exchanger 3 out, more successively through the 62 pipeline 62, the 3rd check valve 23 arrival ends, the 3rd check valve 23 ports of export, the 69 pipeline 69, hot-water heater 8 refrigerant side arrival ends, the hot-water heater 8 refrigerant side ports of export, the 68 pipeline 68, the second throttle mechanism 7, heat source side heat exchanger 4 arrival ends, heat source side heat exchanger 4 ports of export, the 70 pipeline 70, the 66 pipeline 66, the second check valve 22 arrival ends, second check valve 22 ports of export, the 64 pipeline 64, cross valve 2 commutation nodes 72, cross valve 2 low pressure nodes 73, the 63 pipeline 63, gets back to compressing mechanism 1 arrival end.

Under this function, shown in Fig. 1, the workflow of four control air-conditioning systems is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, subsystem tube connector 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, the second water flow control valve 122, hot water water main 109, the 106 pipeline 106, reheater 30 arrival ends, reheater 30 ports of export, the 7th water flow control valve 127, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipeline 113, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, the 3rd water flow control valve 123, get back to hot-water heater 8 water side entrance ends.

Under this function, when air conditioner water circulating pump 51 is variable frequency pump, when compressing mechanism 1 is frequency-changeable compressor, shown in Fig. 1, the control method of four control air-conditioning systems is as follows:

1) master controller 200 is controlled bypass regulator valve 130 in closed condition.

2) while working, the 7th water flow control valve 127 is usingd the dry-bulb temperature of the processed air that the second temperature-detecting device 92 detected as control signal, by air conditioner unit controller 300, regulate the valve opening size of the 7th water flow control valve 127, that is: regulate by the hot water flow of reheater 30 and cooler 100, thereby regulate the heat that adds hot-air, during work, the actual dry-bulb temperature data of the processed air that the second temperature-detecting device 92 detects are delivered to air conditioner unit controller 300, the actual dry-bulb temperature of the processed air detecting when the second temperature-detecting device 92 is during lower than dry-bulb temperature desired value, by air conditioner unit controller 300, increase the valve opening of the 7th water flow control valve 127, the actual dry-bulb temperature of the processed air detecting when the second temperature-detecting device 92 is during higher than dry-bulb temperature desired value, by air conditioner unit controller 300, reduce the valve opening of the 7th water flow control valve 127.

3) in the course of work, using and be located at hot water supply water temperature that the hot water supply water temperature sensor 500 on hot water water main 109 detected as control signal, the operating frequency of controlling compressing mechanism 1 by master controller 200, that is: compressing mechanism 1 is controlled hot water supply water temperature in the mode of frequency conversion.During work, the actual hot water supply water temperature detecting when hot water supply water temperature sensor 500 during higher than hot water supply water temperature desired value, reduces the operating frequency of compressing mechanism 1 by master controller 200; The actual hot water supply water temperature detecting when hot water supply water temperature sensor 500 during lower than hot water supply water temperature desired value, increases the operating frequency of compressing mechanisms 1 by master controller 200.

4) in the course of work, the first pressure sensor 41, the chilled water water main 101 that the second pressure sensor 42 difference are detected and the confession on chilled water backwater main 102, pressure of return water signal is all delivered to master controller 200, master controller 200 utilizes these two pressure signals to calculate the confession backwater pressure reduction between chilled water water main 101 and chilled water backwater main 102, using this confession backwater pressure reduction as control signal, by master controller 200, control the operating frequency of air conditioner water circulating pump 51, that is: air conditioner water circulating pump 51 is controlled hot water flow in the mode of frequency conversion.During work, when detected actual of master controller 200 for backwater pressure reduction when for backwater pressure reduction desired value, by master controller 200, reduce the operating frequency of air conditioner water circulating pump 51; When detected actual of master controller 200 for backwater pressure reduction when for backwater pressure reduction desired value, by master controller 200, increase the operating frequency of air conditioner water circulating pumps 51.

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

(4) winter frost removing function

Under this function, stop the Air Flow of air conditioner unit 110.As shown in Fig. 1 and 9, under this function, during winter frost removing, the workflow of the operation of air conditioning systems shown in Fig. 9 is identical to the workflow of the cooling or dehumidification function of air with its summer.That is: cold-producing medium is from compressing mechanism 1 port of export is discharged, successively through the 60 pipeline 60, cross valve 2 high pressure nodes 71, cross valve 2 commutation nodes 72, the 64 pipeline 64, the first check valve 21 arrival ends, first check valve 21 ports of export, the 69 pipeline 69, hot-water heater 8 refrigerant side arrival ends, the hot-water heater 8 refrigerant side ports of export, the 68 pipeline 68, the second throttle mechanism 7, heat source side heat exchanger 4 arrival ends, heat source side heat exchanger 4 ports of export, the 70 pipeline 70, the 66 pipeline 66, first throttle mechanism 5, the 62 pipeline 62, enter the refrigerant side of user's side heat exchanger 3, by the water in user's side heat exchanger 3 and four control air-conditioning systems, carry out heat exchange, cold-producing medium absorb heat, from the refrigerant side of user's side heat exchanger 3 out, more successively through the 61 pipeline 61, cross valve 2 commutation nodes 74, cross valve 2 low pressure node the 73, the 63 pipelines 63, get back to compressing mechanism 1 arrival end.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; 51 normal operations of air conditioner water circulating pump, hot water circulating pump 50 is not worked; The first water flow control valve 121, the second water flow control valve 122, the 4th water flow control valve 124, the 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed; The 3rd water flow control valve 123 standard-sized sheets; Master controller 200 is controlled bypass regulator valve 130 in full-gear.

During work, the circulating hot water being driven by air conditioner water circulating pump 51, the refrigerant vapour heating that compressed mechanism 1 discharges in hot-water heater 8, but in user's side heat exchanger 3, heated hot water is emitted again heat, the heat that compressing mechanism 1 wasted work produces in this process and the heat of drawing from four control air-conditioning systems are used for defrost by cold-producing medium in heat source side heat exchanger 4.

In the course of the work, the workflow of four control air-conditioning systems shown in Fig. 1 is: hot water is from hot-water heater 8 water side outlet ends are discharged, through the 105 pipeline 105, subsystem tube connector the 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, bypass regulator valve 130, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, the 3rd water flow control valve 123, get back to hot-water heater 8 water side entrance ends successively.

Air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system, except scheme shown in Fig. 1, in Practical Project, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system also have following change programme, these change programmes also can realize the above-described all functions of four control air-conditioning systems shown in the present embodiment Fig. 1, and while realizing each function, its closed circuit is identical with control method, its difference is only in cyclic process, and air conditioner water circulating pump 51, hot-water circulating pump 50 residing position in circulation is different.

Air conditioner water circulating pump 51, hot-water circulating pump 50 change programme of installation site in system shown in Figure 1 is as described below:

1) air conditioner water circulating pump 51 ports of export are connected with the 3rd water flow control valve 123 with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with the 105 pipeline 105, and hot-water circulating pump 50 ports of export are connected with the first water flow control valve 121 arrival ends.

2) air conditioner water circulating pump 51 ports of export are connected with the 3rd water flow control valve 123 with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with first water flow control valve 121 ports of export, and hot-water circulating pump 50 ports of export are connected with hot water water main 109.

3) air conditioner water circulating pump 51 ports of export are connected with user's side heat exchanger 3 water side entrance ends, and air conditioner water circulating pump 51 arrival ends are connected with the 103 pipeline 103; Hot-water circulating pump 50 arrival ends are connected with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with the 3rd water flow control valve 123 with hot-water heater 8 water side entrance ends.

4) air conditioner water circulating pump 51 ports of export are connected with user's side heat exchanger 3 water side entrance ends, and air conditioner water circulating pump 51 arrival ends are connected with the 103 pipeline 103; Hot-water circulating pump 50 arrival ends are connected with the 105 pipeline 105, and hot-water circulating pump 50 ports of export are connected with the first water flow control valve 121 arrival ends.

5 air conditioner water circulating pump 51 ports of export are connected with user's side heat exchanger 3 water side entrance ends, and air conditioner water circulating pump 51 arrival ends are connected with the 103 pipeline 103; Hot-water circulating pump 50 arrival ends are connected with first water flow control valve 121 ports of export, and hot-water circulating pump 50 ports of export are connected with hot water water main 109.

6 air conditioner water circulating pump 51 ports of export are connected with chilled water water main 101, and air conditioner water circulating pump 51 arrival ends are connected with user's side heat exchanger 3 water side outlet ends; Hot-water circulating pump 50 arrival ends are connected with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with the 3rd water flow control valve 123 with hot-water heater 8 water side entrance ends.

7) air conditioner water circulating pump 51 ports of export are connected with chilled water water main 101, and air conditioner water circulating pump 51 arrival ends are connected with user's side heat exchanger 3 water side outlet ends; Hot-water circulating pump 50 arrival ends are connected with the 105 pipeline 105, and hot-water circulating pump 50 ports of export are connected with the first water flow control valve 121 arrival ends.

8) air conditioner water circulating pump 51 ports of export are connected with chilled water water main 101, and air conditioner water circulating pump 51 arrival ends are connected with user's side heat exchanger 3 water side outlet ends; Hot-water circulating pump 50 arrival ends are connected with first water flow control valve 121 ports of export, and hot-water circulating pump 50 ports of export are connected with hot water water main 109.

The above-described air conditioner water circulating pump 51 of the present embodiment, hot-water circulating pump 50 all schemes of installation site in system are also applicable to four control air-conditioning systems described in embodiments of the invention 2 Fig. 2 and embodiment 6 Figure 10.

Embodiment 2

As shown in Figure 2, the difference of four control air-conditioning systems shown in it and embodiment 1 Fig. 1 is: subsystem tube connector 104 and the installation site of the second water flow control valve 122 in four control air-conditioning systems are exchanged.In the system shown in Fig. 2, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are identical with the scheme shown in Fig. 1.

Shown in four control air-conditioning systems shown in Fig. 2 and Fig. 9, operation of air conditioning systems is combined, and also can realize all functions of scheme shown in embodiment 1 Fig. 1, and the control method while realizing each function is also identical; In addition, when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 is also identical with embodiment 1.

System shown in Figure 2 is to realize summer identical with the workflow of embodiment 1 system shown in Figure 1 under above-mentioned two functions to the workflow under the cooling or dehumidification function of air, summer and transition season constant temperature and humidity function; And can adopt identical control method.System shown in Figure 2 is to realize winter as described below to the workflow under the heating function of air, winter frost removing function.

(1) winter the heating function to air

As shown in Fig. 2 and 9, under this function, heat source side heat exchanger 4 draw heat from environment, utilize the heat of drawing, in hot-water heater 8 and user's side heat exchanger 3, produce hot water, the hot water of producing heats processed air in air conditioner unit 110 by cooler 100 and reheater 30 again.

Under this function, the workflow of the operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.

Under this function, shown in Fig. 2, the workflow of four control air-conditioning systems is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the second water flow control valve 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, subsystem tube connector 104, hot water water main 109, the 106 pipeline 106, reheater 30 arrival ends, reheater 30 ports of export, the 7th water flow control valve 127, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipeline 113, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, the 3rd water flow control valve 123, get back to hot-water heater 8 water side entrance ends.

In the course of work under this function, when air conditioner water circulating pump 51 is variable frequency pump, when compressing mechanism 1 is frequency-changeable compressor, the control method when control method of four control air-conditioning systems shown in the present embodiment Fig. 2 is worked under this function with scheme shown in embodiment 1 Fig. 1 is identical.

(2) winter frost removing function

Under this function, stop the Air Flow of air conditioner unit 110.As shown in Fig. 2 and 9, under this function, during winter frost removing, the workflow of the operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; 51 normal operations of air conditioner water circulating pump, hot water circulating pump 50 is not worked; The first water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed; The second water flow control valve 122, the 3rd water flow control valve 123 standard-sized sheets; Master controller 200 is controlled bypass regulator valve 130 in full-gear.

In the course of the work, the workflow of four control air-conditioning systems shown in Fig. 2 is: hot water is from hot-water heater 8 water side outlet ends are discharged, through the 105 pipeline 105, the second water flow control valve the 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, bypass regulator valve 130, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, the 3rd water flow control valve 123, get back to hot-water heater 8 water side entrance ends successively.

The all changes scheme of the air conditioner water circulating pump 51 described in embodiment 1, hot-water circulating pump 50 installation site in four control air-conditioning systems shown in Fig. 1 is also applicable to four control air-conditioning systems described in the present embodiment Fig. 2.

Embodiment 3

As shown in Figure 3, it from the difference of four control air-conditioning systems shown in embodiment 1 Fig. 1 only: air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are different.

In four control air-conditioning systems shown in the present embodiment Fig. 3, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are: air conditioner water circulating pump 51 ports of export are connected with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with the 3rd water flow control valve 123 with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with the 3rd water flow control valve 123 with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with hot-water heater 8 water side entrance ends.

Shown in Fig. 3, shown in four control air-conditioning systems and Fig. 9, operation of air conditioning systems is combined, and also can realize all functions of scheme shown in embodiment 1 Fig. 1, and when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.System shown in Figure 3 is to realize summer identical with the workflow of embodiment 1 system shown in Figure 1 under above-mentioned two functions to the workflow under the cooling or dehumidification function of air, summer and transition season constant temperature and humidity function; And can adopt identical control method.System shown in Figure 3 is to realize winter as described below to the workflow under the heating function of air, winter frost removing function.

(1) winter the heating function to air

As shown in Fig. 3 and 9, under this function, heat source side heat exchanger 4 draw heat from environment, utilize the heat of drawing, in hot-water heater 8 and user's side heat exchanger 3, produce hot water, the hot water of producing heats processed air in air conditioner unit 110 by cooler 100 and reheater 30 again.

During work, air conditioner water circulating pump 51 is not worked, hot water circulating pump 50 normal operations; First throttle mechanism 5 closes, the second throttle mechanism 7 normal operations; The first water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, the 6th water flow control valve 126 are closed; The second water flow control valve 122, the 3rd water flow control valve 123 standard-sized sheets; The 7th water flow control valve 127 normal operations, common the 7th water flow control valve 127 is two-way electric control valve (or being called straight-through electric control valve); During work, the 7th water flow control valve 127 is for regulating by the hot water flow of cooler 100 and reheater 30.

Under this function, shown in Fig. 3, the workflow of four control air-conditioning systems is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, subsystem tube connector 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, the second water flow control valve 122, hot water water main 109, the 106 pipeline 106, reheater 30 arrival ends, reheater 30 ports of export, the 7th water flow control valve 127, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipeline 113, chilled water backwater main 102, the 3rd water flow control valve 123, hot water backwater's main 108, hot water circulating pump 50 arrival ends, hot water circulating pump 50 ports of export, get back to hot-water heater 8 water side entrance ends.

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

4) in the course of work, the first pressure sensor 41, the 4th pressure sensor 44 respectively detected chilled water water main 101 and the confession on hot water backwater's main 108, pressure of return water signal are all delivered to master controller 200, master controller 200 utilizes these two pressure signals to calculate the confession backwater pressure reduction between chilled water water main 101 and hot water backwater's main 108, using this confession backwater pressure reduction as control signal, the operating frequency of controlling hot water circulating pump 50 by master controller 200, that is: hot water circulating pump 50 is controlled hot water flow in the mode of frequency conversion.During work, when detected actual of master controller 200 for backwater pressure reduction when for backwater pressure reduction desired value, by master controller 200, reduce the operating frequency of hot water circulating pump 50; When detected actual of master controller 200 for backwater pressure reduction when for backwater pressure reduction desired value, by master controller 200, increase the operating frequency of hot water circulating pumps 50.

Under this function, above-described control method is applicable to all schemes of the present embodiment, and all schemes described in embodiment 4,5.

(2) winter frost removing function

Under this function, stop the Air Flow of air conditioner unit 110.As shown in Fig. 3 and 9, under this function, during winter frost removing, the workflow of the operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; Air conditioner water circulating pump 51 is not worked, hot water circulating pump 50 normal operations; The first water flow control valve 121, the second water flow control valve 122, the 4th water flow control valve 124, the 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed; The 3rd water flow control valve 123 standard-sized sheets; Master controller 200 is controlled bypass regulator valve 130 in full-gear.

During work, the circulating hot water being driven by hot water circulating pump 50, the refrigerant vapour heating that compressed mechanism 1 discharges in hot-water heater 8, but in user's side heat exchanger 3, heated hot water is emitted again heat, the heat that compressing mechanism 1 wasted work produces in this process and the heat of drawing from four control air-conditioning systems are used for defrost by cold-producing medium in heat source side heat exchanger 4.

In the course of the work, the workflow of four control air-conditioning systems shown in Fig. 3 is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, subsystem tube connector 104, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, bypass regulator 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 arrival ends, hot water circulating pump 50 ports of export, get back to hot-water heater 8 water side entrance ends.

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

In Practical Project, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in four control air-conditioning systems shown in Fig. 3 are except the present embodiment above-described scheme, also has following change programme, these change programmes also can realize the above-described all functions of scheme shown in the present embodiment Fig. 3, and while realizing each function, its closed circuit is identical with control method, its difference is only in cyclic process, and air conditioner water circulating pump 51, hot-water circulating pump 50 residing position in circulation is different.

The change programme of air conditioner water circulating pump 51, hot-water circulating pump 50 installation site in four control air-conditioning systems shown in Fig. 3 is as described below:

1) air conditioner water circulating pump 51 ports of export are connected with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with the 3rd water flow control valve 123 with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with hot-water heater 8 water side outlet ends, and hot-water circulating pump 50 ports of export are connected with the 105 pipeline 105.

2) air conditioner water circulating pump 51 ports of export are connected with the 104 pipeline 104 with the 103 pipeline 103, and air conditioner water circulating pump 51 arrival ends are connected with the 4th water flow control valve 124 ports of export; Hot-water circulating pump 50 arrival ends are connected with the 3rd water flow control valve 123 with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with hot-water heater 8 water side entrance ends.

3) air conditioner water circulating pump 51 ports of export are connected with the 104 pipeline 104 with the 103 pipeline 103, and air conditioner water circulating pump 51 arrival ends are connected with the 4th water flow control valve 124 ports of export; Hot-water circulating pump 50 arrival ends are connected with hot-water heater 8 water side outlet ends, and hot-water circulating pump 50 ports of export are connected with the 105 pipeline 105.

Embodiment 4

As shown in Figure 4, it from the difference of four control air-conditioning systems shown in embodiment 2 Fig. 2 only: air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are different.

In four control air-conditioning systems shown in the present embodiment Fig. 4, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are: air conditioner water circulating pump 51 ports of export are connected with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with the 3rd water flow control valve 123 with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with the 3rd water flow control valve 123 with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with hot-water heater 8 water side entrance ends.

Shown in Fig. 4, shown in four control air-conditioning systems and Fig. 9, operation of air conditioning systems is combined, and also can realize all functions of scheme shown in embodiment 1 Fig. 1, and when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.System shown in Figure 4 is to realize summer identical with the workflow of embodiment 1 system shown in Figure 1 under above-mentioned two functions to the workflow under the cooling or dehumidification function of air, summer and transition season constant temperature and humidity function; And can adopt identical control method.System shown in Figure 4 realize winter following to the workflow under the heating function of air, winter frost removing function, described in.

(1) winter the heating function to air

As shown in Fig. 4 and 9, under this function, heat source side heat exchanger 4 draw heat from environment, utilize the heat of drawing, in hot-water heater 8 and user's side heat exchanger 3, produce hot water, the hot water of producing heats processed air in air conditioner unit 110 by cooler 100 and reheater 30 again.

Under this helps energy, shown in Fig. 4, the workflow of four control air-conditioning systems is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the second water flow control valve 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, subsystem tube connector 104, hot water water main 109, the 106 pipeline 106, reheater 30 arrival ends, reheater 30 ports of export, the 7th water flow control valve 127, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipeline 113, chilled water backwater main 102, the 3rd water flow control valve 123, hot water backwater's main 108, hot water circulating pump 50 arrival ends, hot water circulating pump 50 ports of export, get back to hot-water heater 8 water side entrance ends.

When hot water circulating pump 50 is variable frequency pump, when compressing mechanism 1 is frequency-changeable compressor, in the course of work under this function, the control method when control method of four control air-conditioning systems shown in Fig. 4 is worked under this function with four control air-conditioning systems shown in the embodiment of the present invention 3 Fig. 3 is identical.

(2) winter frost removing function

Under this function, stop the Air Flow of air conditioner unit 110.As shown in Fig. 4 and 9, under this function, during winter frost removing, the workflow of the operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; Air conditioner water circulating pump 51 is not worked, hot water circulating pump 50 normal operations; The first water flow control valve 121, the 4th water flow control valve 124, the 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127 are closed; The second water flow control valve 122, the 3rd water flow control valve 123 standard-sized sheets; Master controller 200 is controlled bypass regulator valve 130 in full-gear.

In the course of the work, the workflow of four control air-conditioning systems shown in Fig. 4 is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the second water flow control valve 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, bypass regulator 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 arrival ends, hot water circulating pump 50 ports of export, get back to hot-water heater 8 water side entrance ends.

In Practical Project, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in four control air-conditioning systems shown in Fig. 4 are except the present embodiment above-described scheme, also has following change programme, these change programmes also can realize the above-described all functions of scheme shown in the present embodiment Fig. 4, and while realizing each function, its closed circuit is identical with control method, its difference is only in cyclic process, and air conditioner water circulating pump 51, hot-water circulating pump 50 residing position in circulation is different.

The change programme of air conditioner water circulating pump 51, hot-water circulating pump 50 installation site in four control air-conditioning systems shown in Fig. 4 is as described below:

2) air conditioner water circulating pump 51 ports of export are connected with the second water flow control valve 122 with the 103 pipeline 103, and air conditioner water circulating pump 51 arrival ends are connected with the 4th water flow control valve 124 ports of export; Hot-water circulating pump 50 arrival ends are connected with the 3rd water flow control valve 123 with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with hot-water heater 8 water side entrance ends.

3) air conditioner water circulating pump 51 ports of export are connected with the second water flow control valve 122 with the 103 pipeline 103, and air conditioner water circulating pump 51 arrival ends are connected with the 4th water flow control valve 124 ports of export; Hot-water circulating pump 50 arrival ends are connected with hot-water heater 8 water side outlet ends, and hot-water circulating pump 50 ports of export are connected with the 105 pipeline 105.

Embodiment 5

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

In four control air-conditioning systems shown in the present embodiment Fig. 5, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are: air conditioner water circulating pump 51 ports of export are connected with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with subsystem tube connector 104 with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with subsystem tube connector 104 with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with hot-water heater 8 water side entrance ends.

Shown in Fig. 5, shown in four control air-conditioning systems and Fig. 9, operation of air conditioning systems is combined, and also can realize all functions of scheme shown in embodiment 1 Fig. 1, and when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.System shown in Figure 5 is to realize summer identical with the workflow of embodiment 1 system shown in Figure 1 under above-mentioned two functions to the workflow under the cooling or dehumidification function of air, summer and transition season constant temperature and humidity function; And can adopt identical control method.System shown in Figure 5 is to realize winter as described below to the workflow under the heating function of air, winter frost removing function.

(1) winter the heating function to air

As shown in Fig. 5 and 9, under this function, heat source side heat exchanger 4 draw heat from environment, utilize the heat of drawing, in hot-water heater 8 and user's side heat exchanger 3, produce hot water, the hot water of producing heats processed air in air conditioner unit 110 by cooler 100 and reheater 30 again.

Under this function, shown in Fig. 5, the workflow of four control air-conditioning systems is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the second water flow control valve 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, the 3rd water flow control valve 123, hot water water main 109, the 106 pipeline 106, reheater 30 arrival ends, reheater 30 ports of export, the 7th water flow control valve 127, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipeline 113, chilled water backwater main 102, subsystem tube connector 104, hot water backwater's main 108, hot water circulating pump 50 arrival ends, hot water circulating pump 50 ports of export, get back to hot-water heater 8 water side entrance ends.

When hot water circulating pump 50 is variable frequency pump, when compressing mechanism 1 is frequency-changeable compressor, in the course of work under this function, the control method when control method of four control air-conditioning systems shown in Fig. 5 is worked under this function with four control air-conditioning systems shown in the embodiment of the present invention 3 Fig. 3 is mutually identical.

(2) winter frost removing function

Under this function, stop the Air Flow of air conditioner unit 110.As shown in Fig. 5 and 9, under this function, during winter frost removing, the workflow of the operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; Air conditioner water circulating pump 51 is not worked, hot water circulating pump 50 normal operations; The first water flow control valve 121, 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, the 7th water flow control valve 127 are closed; The second water flow control valve 122 standard-sized sheets; Master controller 200 is controlled bypass regulator valve 130 in full-gear.

During work, go out the circulating hot water that hot water circulating pump 50 drives, the refrigerant vapour heating that compressed mechanism 1 discharges in hot-water heater 8, but in user's side heat exchanger 3, heated hot water is emitted again heat, the heat that compressing mechanism 1 wasted work produces in this process and the heat of drawing from four control air-conditioning systems are used for defrost by cold-producing medium in heat source side heat exchanger 4.

In the course of the work, the workflow of four control air-conditioning systems shown in Fig. 5 is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the second water flow control valve 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, bypass regulator valve 130, chilled water backwater main 102, subsystem tube connector 104, hot water backwater's main 108, hot water circulating pump 50 arrival ends, hot water circulating pump 50 ports of export, get back to hot-water heater 8 water side entrance ends.

In Practical Project, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in four control air-conditioning systems shown in Fig. 5 are except the present embodiment above-described scheme, also has following change programme, these change programmes also can realize the above-described all functions of scheme shown in the present embodiment Fig. 5, and while realizing each function, its closed circuit is identical with control method, its difference is only in cyclic process, and air conditioner water circulating pump 51, hot-water circulating pump 50 residing position in circulation is different.

The change programme of air conditioner water circulating pump 51, hot-water circulating pump 50 installation site in four control air-conditioning systems shown in Fig. 5 is as described below:

1) air conditioner water circulating pump 51 ports of export are connected with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with subsystem tube connector 104 with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with hot-water heater 8 water side outlet ends, and hot-water circulating pump 50 ports of export are connected with the 105 pipeline 105.

2) air conditioner water circulating pump 51 ports of export are connected with the second water flow control valve 122 with the 103 pipeline 103, and air conditioner water circulating pump 51 arrival ends are connected with the 4th water flow control valve 124 ports of export; Hot-water circulating pump 50 arrival ends are connected with subsystem tube connector 104 with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with hot-water heater 8 water side entrance ends.

Embodiment 6

As shown in figure 10, it from the difference of four control air-conditioning systems shown in embodiment 5 Fig. 5 only: air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are different.

In four control air-conditioning systems shown in the present embodiment Figure 10, air conditioner water circulating pump 51, the installation site of hot-water circulating pump 50 in system are: air conditioner water circulating pump 51 ports of export are connected with subsystem tube connector 104 with the 4th water flow control valve 124 arrival ends, and air conditioner water circulating pump 51 arrival ends are connected with chilled water backwater main 102; Hot-water circulating pump 50 arrival ends are connected with hot water backwater's main 108, and hot-water circulating pump 50 ports of export are connected with subsystem tube connector 104 with hot-water heater 8 water side entrance ends.

Shown in Figure 10, shown in four control air-conditioning systems and Fig. 9, operation of air conditioning systems is combined, and also can realize all functions of scheme shown in embodiment 1 Fig. 1, and when realizing identical function, the workflow of operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.System shown in Figure 10 is to realize summer identical with the workflow of embodiment 1 system shown in Figure 1 under above-mentioned two functions to the workflow under the cooling or dehumidification function of air, summer and transition season constant temperature and humidity function; And can adopt identical control method.System shown in Figure 10 is to realize winter as described below to the workflow under the heating function of air, winter frost removing function.

(1) winter the heating function to air

As shown in Figure 10 and 9, under this function, heat source side heat exchanger 4 draw heat from environment, utilize the heat of drawing, in hot-water heater 8 and user's side heat exchanger 3, produce hot water, the hot water of producing heats processed air in air conditioner unit 110 by cooler 100 and reheater 30 again.

Under this function, shown in Figure 10, the workflow of four control air-conditioning systems is: hot water is from hot-water heater 8 water side outlet ends are discharged, successively through the 105 pipeline 105, the second water flow control valve 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, the 3rd water flow control valve 123, hot water water main 109, the 106 pipeline 106, reheater 30 arrival ends, reheater 30 ports of export, the 7th water flow control valve 127, cooler 100 arrival ends, cooler 100 ports of export, the 113 pipe pipe 113, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, subsystem tube connector 104, get back to hot-water heater 8 water side entrance ends.

When air conditioner water circulating pump 51 is variable frequency pump, when compressing mechanism 1 is frequency-changeable compressor, in the course of work under this function, the control method when control method of four control air-conditioning systems shown in Figure 10 is worked under this function with four control air-conditioning systems shown in the embodiment of the present invention 1 Fig. 1 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, during winter frost removing, the workflow of the operation of air conditioning systems shown in Fig. 9 is identical with embodiment 1.

5 normal operations of work Shi， first throttle mechanism, the second throttle mechanism 7 standard-sized sheets; 51 normal operations of air conditioner water circulating pump, hot water circulating pump 50 is not worked; The first water flow control valve 121, 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, the 7th water flow control valve 127 are closed; The second water flow control valve 122 standard-sized sheets; Master controller 200 is controlled bypass regulator valve 130 in full-gear.

In the course of the work, the workflow of four control air-conditioning systems shown in Figure 10 is: hot water is from hot-water heater 8 water side outlet ends are discharged, through the 105 pipeline 105, the second water flow control valve the 122, the 103 pipeline 103, user's side heat exchanger 3 water side entrance ends, user's side heat exchanger 3 water side outlet ends, chilled water water main 101, bypass regulator valve 130, chilled water backwater main 102, air conditioner water circulating pump 51 arrival ends, air conditioner water circulating pump 51 ports of export, subsystem tube connector 104, get back to hot-water heater 8 water side entrance ends successively.

When practical application, the air conditioner water circulating pump 51 described in embodiment 1, all changes scheme of hot-water circulating pump 50 installation site in four control air-conditioning systems shown in Fig. 1 are also applicable to four control air-conditioning systems described in the present embodiment Figure 10.

Embodiment 7

As shown in figure 11, the difference of four control air-conditioning systems shown in it and embodiment 3 Fig. 3 only: in four control air-conditioning systems shown in Figure 11, with a non-return valve 109, substituted the 4th water flow control valve 124 in four control air-conditioning systems shown in embodiment 3 Fig. 3.After substituting, the connected mode of non-return valve 109 in system is: the port of export of non-return valve 109 is the port of export of the 4th replaced water flow control valve 124; The arrival end of non-return valve 109 is the arrival end of the 4th replaced water flow control valve 124.

As shown in figure 11, the connected mode of non-return valve 10 in four control air-conditioning systems shown in Figure 11 is: the port of export of non-return valve 109 is connected with the 103 pipeline 103, and the arrival end of non-return valve 109 is connected with chilled water backwater main 102 by air conditioner water circulating pump 51 ports of export, air conditioner water circulating pump 51 arrival ends successively.

Shown in four control air-conditioning systems shown in the present embodiment Figure 11 and Fig. 9, operation of air conditioning systems is combined, also can realize all functions of four control air-conditioning systems shown in embodiment 3 Fig. 3, when realizing identical function, its workflow is also identical with control method with the workflow of four control air-conditioning systems shown in embodiment 3 Fig. 3 with control method.

The above-described scheme with non-return valve 109 alternative the 4th water flow control valves 124 of the present embodiment is also applicable to all changes scheme described in embodiment 3, and all schemes described in embodiment 4,5; And with non-return valve 109, substitute the 4th water flow control valve 124, can realize all functions of former scheme, when realizing identical function, its workflow is also identical with control method with the workflow of former scheme with control method.

As shown in figure 11, on hot water water main 109, be provided with an auxiliary thermal source 20, when system is in summer and transition season constant temperature and humidity function, or winter is when working under the heating function of air, when if operation of air conditioning systems shown in Fig. 9 can not meet user's thermic load demand, utilize auxiliary thermal source 20 to supplement not enough heat, auxiliary thermal source 20 can be heat pump, fuel oil or gas fired-boiler, or even electric heater etc.The above scheme is applicable to all schemes described in all embodiment of the present invention.

In the scheme of above-mentioned all embodiment, user's side heat exchanger 3 is as cold-producing medium-water-to-water heat exchanger, conventionally adopts any one in plate type heat exchanger, volumetric heat exchanger, shell and tube exchanger or double pipe heat exchanger.

In the scheme of above-mentioned all embodiment, heat source side heat exchanger 4 is except can be cold-producing medium-air heat exchanger, also can be cold-producing medium-soil heat exchanger, cold-producing medium-water-to-water heat exchanger, also can be evaporating heat exchanger, in addition, can be also the heat exchanger of other kind; During as cold-producing medium-water-to-water heat exchanger, heat source side heat exchanger 4 adopts any one in plate type heat exchanger, volumetric heat exchanger, shell and tube exchanger or double pipe heat exchanger conventionally.

In the scheme of above-mentioned all embodiment, hot-water heater 8 during as cold-producing medium-water-to-water heat exchanger, adopts any one in volumetric heat exchanger, plate type heat exchanger, shell and tube exchanger or double pipe heat exchanger conventionally, or the heat exchanger of other kind as required.

Heat source side heat exchanger 4 during as cold-producing medium-air heat exchanger, adopts finned heat exchanger conventionally, and the fin of described finned heat exchanger is generally aluminum or aluminum alloy material, in some special occasions, also uses copper material.That the shape of fin adopts is conventionally plate, any one in ripple type or slitted fin type.

In the scheme of above-mentioned all embodiment, any one in the first described 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, even above-mentioned four water flow control valves, can adopt magnetic valve or there is any one in the flow control device of turn-off function to substitute, for example: two-way electric control valve.

Any one in the 5th water flow control valve 125, the 6th water flow control valve 126, the 7th water flow control valve 127, even above-mentioned three water flow control valves, can adopt any one in the flow control device with turn-off function to substitute, for example: two-way electric control valve.

Claims

1. four control air-conditioning systems, comprise user's side heat exchanger (3) of operation of air conditioning systems, the hot-water heater (8) of operation of air conditioning systems, 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 tube connector (104), at least one cooler (100) and at least one reheater (30);

2. four control air-conditioning systems, comprise user's side heat exchanger (3) of operation of air conditioning systems, the hot-water heater (8) of operation of air conditioning systems, 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 tube connector (104), at least one cooler (100) and at least one reheater (30);

3. four control air-conditioning systems, comprise user's side heat exchanger (3) of operation of air conditioning systems, the hot-water heater (8) of operation of air conditioning systems, 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 tube connector (104), at least one cooler (100) and at least one reheater (30);

4. according to four control air-conditioning systems described in arbitrary claim in claims 1 to 3, it is characterized in that a bypass regulator valve (130) arrival end is connected with described chilled water water main (101), described bypass regulator valve (130) port of export is connected with described chilled water backwater main (102).

5. according to four control air-conditioning systems described in arbitrary claim in claims 1 to 3, it is characterized in that described cooler (100), reheater (30) are arranged in same air conditioner unit (110), and along the flow direction of air, the downwind side of described reheater (30) in described cooler (100).

6. according to four control air-conditioning systems described in arbitrary claim in claims 1 to 3, it is characterized in that the 5th described water flow control valve (125) is two-way electric control valve.

7. according to four control air-conditioning systems described in arbitrary claim in claims 1 to 3, it is characterized in that the 6th described water flow control valve (126) is two-way electric control valve.

8. according to four control air-conditioning systems described in arbitrary claim in claims 1 to 3, it is characterized in that the 7th described water flow control valve (127) is two-way electric control valve.

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

10. four control air-conditioning systems according to claim 4, is characterized in that described bypass regulator valve (130) is two-way electric control valve.