CN1624405A - Operating number control device for coupling type cold warm water machine - Google Patents
Operating number control device for coupling type cold warm water machine Download PDFInfo
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- CN1624405A CN1624405A CN 200410094804 CN200410094804A CN1624405A CN 1624405 A CN1624405 A CN 1624405A CN 200410094804 CN200410094804 CN 200410094804 CN 200410094804 A CN200410094804 A CN 200410094804A CN 1624405 A CN1624405 A CN 1624405A
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Abstract
A method and device for controlling the number of affiliated water refrigerating-and-heating machine. The device includes mainframe, pickaback plane, manifold of inlets, manifold of outlets, pump, inlet temperature, long distant signal wire, outlet temperature sensor, outlet temperature controlling part, communication wire between modules, control plate with CPU inside. The invention has increased the operation efficiency of water refrigerating-and-heating machine, decreased the changes of outlet temperature of cold or warm water while the water refrigerating-and-heating machine starts up and stops, and supplied stable cold or warm water.
Description
The present invention is an application number 03139155.9, and on August 22 2003 applying date, invention and created name is the dividing an application of patented claim of coupling type cold warm water machine operating number control method and operating number control device.
(1) technical field: the present invention relates to cold temperature machine operating number control device, relate in particular to the coupling type cold warm water machine operating number control device of a kind of shared cold warm water pipe arrangement, many cold warm water machines.
(2) background technology: the system of coupling type cold warm water machine in the past constitutes (referring to Fig. 1), among Fig. 1, the 1st, inlet house steward, the 2nd, pump, 3,4,5,6,7 is that cold warm water machine, 8 is the outlet header, cold warm water from inlet house steward shunting, delivered to cold warm water machine 3,4,5,6,7 by pump 2, each cold warm water machine is controlled outlet temperature separately and is freezed or heat.And cold warm water herein also comprises refrigerating fulid.In the coupling type cold warm water machine system of said structure, operating number control method during cooling operation is: the cold warm water machine (each outlet temperature is simultaneously in control) turn round the regular hour continuously (for example 3 minutes) that makes certain number, if outlet header 8 interflow portion cold water outlet temperature is than design temperature low (for example 1 ℃), the operating number of cold warm water machine just subtracts 1, if than design temperature height, the operating number of cold warm water machine just increases by 1 method.This method is reducing the cold water flow of cold warm water machine, and under the situation that outlet temperature reduces, operating number will constantly be reduced, and is the bad control method of efficient.
(3) summary of the invention: the objective of the invention is to overcome the deficiency of above-mentioned prior art and be provided in the coupling type cold warm water machine system, the utilization total system makes the cold warm water machine running efficiency higher, make that cold warm water machine starts, the cold water when stopping or warm water outlet temperature with low uncertainty, and offer stable cold water or warm water is the coupling type cold warm water machine operating number control device of purpose.
Purpose of the present invention can reach by following measure: the coupling type cold warm water machine operating number control device, this device comprises cold warm water machine main frame 3, cold warm water machine main frame 3 connects the cold warm water machine handset, cold warm water machine main frame 3 and cold warm water machine handset all with the inlet house steward 1, outlet header 8 links to each other, inlet house steward 1 connects pump 2, the inlet pipe arrangement that it is characterized in that cold warm water machine main frame 3 is provided with inlet temperature sensor 9, be respectively equipped with outlet temperature sensor 10 on the outlet pipe arrangement of cold warm water machine main frame 3 and the outlet pipe arrangement of cold warm water machine handset, be equipped with console panel 11 on each cold warm water machine main frame 3 and the cold warm water machine handset, outlet temperature control section 14, the outlet temperature control section 14 of each cold warm water machine all links to each other with outlet temperature sensor 10 on it, each console panel 11 inside is provided with CPU, connect with intermodule communication distribution 12 between each console panel 11, cold warm water machine main frame 3 connects design temperature control section 15, remote signal line 13, the outlet header 8 of cold warm water machine is provided with outlet temperature sensor 16.
In order further to realize purpose of the present invention, described cold warm water machine comprises heat exchanger 17, and heat exchanger 17 links to each other with compressor 22, governor motion 24 respectively, and heat exchanger 17 links to each other with inlet house steward 1, outlet header 8.
In order further to realize purpose of the present invention, described heat exchanger 17 comprises evaporator 21, condenser 23, evaporator 21 connects compressor 22, governor motion 24, and compressor 22, governor motion 24 link to each other with condenser 23 again, and evaporator 21 links to each other with inlet house steward 1, outlet header 8.
The present invention can produce outstanding substantive distinguishing features and obvious improvement compared with the prior art: the present invention is shared at cold warm water pipe arrangement, and be on many All-China Federation of Taiwan Compatriots eliminant cold warm water machine, the design temperature of each cold warm water machine is controlled in cascade, control cold water or warm water outlet medial temperature or interflow portion temperature, simultaneously according to the junction board number, cold water or warm water gateway design temperature are poor, temperature in and calculate the optimum operation platform number of cold warm water machine, again according to the optimum operation platform number that calculates and the comparison of real-world operation platform number, by at regular intervals, increase or reduce the operating number of cold warm water machine, obtain the higher running of total system efficient, can when the cold warm water machine start-stop, provide cold water or warm water outlet temperature to change less and stable cold water or warm water again simultaneously.
(4) description of drawings:
Fig. 1 is that existing coupling type cold warm water machine system constitutes synoptic diagram;
Fig. 2 is that coupling type cold warm water machine system related to the present invention constitutes synoptic diagram;
Fig. 3 is the formation synoptic diagram of cold warm water machine;
Operating number control flow synoptic diagram when Fig. 4 is coupling type cold warm water machine related to the present invention refrigeration;
The operating number of Fig. 5 during the synoptic diagram that results in for coupling type cold warm water machine related to the present invention refrigeration;
The part throttle characteristics synoptic diagram of platform number running when Fig. 6 is coupling type cold warm water machine related to the present invention refrigeration.
(5) embodiment: the specific embodiment of the present invention is elaborated below in conjunction with accompanying drawing:
Embodiment: Fig. 2 is the system configuration example figure that expression the present invention carries out the coupling type cold warm water machine of operating number control.Among Fig. 2, the 1st, the inlet house steward, the 2nd, pump, 3,4,5,6,7 is respectively cold warm water machine, the 8th, the outlet header.Here, cold warm water machine 3 is a main frame, and 4,5,6,7 are respectively handset.Cold warm water machine 3～7 is called contrary circulation water law by inlet house steward 1 and outlet header's 8 connected methods.The pipe arrangement of 3～7 each cold warm water machine can make the assignment of traffic of cold warm water even.
On the inlet pipe arrangement of cold warm water machine main frame 3 inlet temperature sensor 9 is installed, the outlet temperature sensor that detects the cold warm water machine outlet temperature is installed respectively on the outlet pipe arrangement of cold warm water machine main frame 3 and the outlet pipe arrangement of cold warm water machine handset 4～7.Each cold warm water machine 3～7 is respectively equipped with console panel 11, and be equipped with each console panel 11 inside does not have illustrated CPU.The console panel 11 usefulness intermodule communication distributions of each cold warm water machine 3,4,5,6,7 connect, and carry out temperature by 3 pairs of handsets of cold warm water machine main frame 4～7 and set, and the data of handset 4～7 send main frame 3 to.Cold warm water machine main frame 3 is connecting remote signal line 13.In addition, 17 be heat exchanger among Fig. 2.
Fig. 3 is that cold warm water machine constitutes exemplary plot.As shown in the figure, cold warm water machine has evaporator 21, compressor 22, condenser 23, governor motion 24, and the refrigerant gas of evaporation is compressed by compressor 22 in evaporator 21, enters condenser 23, through chilled water 25 cooling liquids.The cryogen that is liquefied reduces pressure through governor motion, enters the cryogen chamber in the evaporator 21.In the cryogen chamber, evaporate with the cold warm water heat-shift that flows to from inlet house steward 1.Therefore cold warm water is cooled, and flows to outlet header 8 then.
Each cold warm water machine 3,4,5,6,7 is provided with outlet temperature control section 14.Each outlet temperature control section 14 has been imported the output valve of outlet temperature sensor 10, by the capacity control drive of compressor 22, the air inflow of compressor 22 is changed, with cold water or warm water control of export on certain numerical value.And be equipped with on the cold warm water machine main frame 3 control each cold warm water machine 3,4,5,6,7 design temperature design temperature control section 15.Import the outlet medial temperature of each cold warm water machine 3,4,5,6,7 in order to make calculating on this design temperature control section 15, or through detecting at interflow portion outlet temperature sensor 16, import the outlet temperature of cold warm water, control the medial temperature of each cold warm water machine 3,4,5,6,7 outlet or the temperature of interflow portion, the cold water or the outlet design temperature of each cold warm water machine 3,4,5,6,7 controlled in cascade.Promptly, change the desired value of each cold warm water machine 3～7, control by such method by the console panel 11 of main frame cold warm water machine 3.
Fig. 4 is a cold warm water machine operating number control flow chart.
What Fig. 5 represented is that the cold warm water machine operating number results in.Count that N, cold warm water outlet temperature poor (during 100% load) DT and outlet temperature are set SV and the cold water inlet temperature T i that changes by actual load and obtain the optimum operation platform by the following formula calculation and count r according to the junction board of setting through cold warm water machine main frame 3, count R according to the real-world operation platform and count r, the operating number of cold warm water machine was increased and decreased every the regular hour with this optimum operation platform.By with the running of optimum operation platform number, prevent the low load operation of each cold warm water machine, obtain the running of entire system good efficiencies.r＝{N×(Ti-SV)}/DT
Among Fig. 4, turned round continuously 3 minutes, judge whether | r+1+a|＜R or r＜0.4, if (grade ST1) YES stops 1 (the real-world operation platform is counted R-1) (grade ST2) from real-world operation platform number.If NO turned round 3 minutes continuously, judge whether R＜| r-a|, if (grade ST3) YES then increases by 1 operating number (the real-world operation platform is counted R+1) (grade ST4) on operating number R.If NO then returns above-mentioned grade ST1.
As mentioned above, by making the operating number of cold warm water machine, increase and decrease by platform every the regular hour, the cold water outlet temperature of interflow portion changes in the time of can reducing many machine runs, the cold warm water of temperature stabilization is provided, many not startings simultaneously of cold warm water machine can reduce the influence of starting current to power-supply system simultaneously.And when cold warm water temperature difference is reduced to certain value, the operating number of preferential control cold warm water machine, cold warm water machine is stopped, can prevent because compressor 22 air inflows of cold warm water machine reduce the motor cooling deficiency of the inside of causing, further, fall in export when lower at cold warm water, can stop automatically, prevent that cold water outlet temperature is low excessively than set point of temperature (as 2 ℃).
Part throttle characteristics when Fig. 6 has represented many cold warm water machine cooling operations.Can pass through cooling load (cold water inlet temperature) cold warm water machine is turned round with best platform number, obtain the good running of part load efficiency.
Claims (3)
1, the coupling type cold warm water machine operating number control device, it comprises cold warm water machine main frame (3), cold warm water machine main frame (3) connects the cold warm water machine handset, cold warm water machine main frame (3) and cold warm water machine handset all with the inlet house steward (1), outlet header (8) links to each other, inlet house steward (1) connects pump (2), the inlet pipe arrangement that it is characterized in that cold warm water machine main frame (3) is provided with inlet temperature sensor (9), be respectively equipped with outlet temperature sensor (10) on the outlet pipe arrangement of cold warm water machine main frame (3) and the outlet pipe arrangement of cold warm water machine handset, be equipped with console panel (11) on each cold warm water machine main frame (3) and the cold warm water machine handset, outlet temperature control section (14), the outlet temperature control section (14) of each cold warm water machine all links to each other with outlet temperature sensor (10) on it, each console panel (11) inside is provided with CPU, connect with intermodule communication distribution (12) between each console panel (11), cold warm water machine main frame (3) connects design temperature control section (15), remote signal line (13), the outlet header of cold warm water machine (8) is provided with outlet temperature sensor (16).
2, coupling type cold warm water machine operating number control device according to claim 1, it is characterized in that described cold warm water machine comprises heat exchanger (17), heat exchanger (17) links to each other with compressor (22), governor motion (24) respectively, and heat exchanger (17) links to each other with inlet house steward (1), outlet header (8).
3, coupling type cold warm water machine operating number control device according to claim 2, it is characterized in that described heat exchanger (17) comprises evaporator (21), condenser (23), evaporator (21) connects compressor (22), governor motion (24), compressor (22), governor motion (24) link to each other with condenser (23) again, and evaporator (21) links to each other with inlet house steward (1), outlet header (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410094804 CN1282859C (en) | 2003-08-22 | 2003-08-22 | Operating number control device for coupling type cold warm water machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410094804 CN1282859C (en) | 2003-08-22 | 2003-08-22 | Operating number control device for coupling type cold warm water machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03139155 Division CN1226586C (en) | 2003-08-22 | 2003-08-22 | Method and device for controlling running number of connected low temperature water suppliers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1624405A true CN1624405A (en) | 2005-06-08 |
| CN1282859C CN1282859C (en) | 2006-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410094804 Expired - Fee Related CN1282859C (en) | 2003-08-22 | 2003-08-22 | Operating number control device for coupling type cold warm water machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964495A (en) * | 2015-07-28 | 2015-10-07 | 广东美的暖通设备有限公司 | Control method and device for modular air-cooled heat pump unit |
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2003
- 2003-08-22 CN CN 200410094804 patent/CN1282859C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964495A (en) * | 2015-07-28 | 2015-10-07 | 广东美的暖通设备有限公司 | Control method and device for modular air-cooled heat pump unit |
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| CN1282859C (en) | 2006-11-01 |
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Granted publication date: 20061101 Termination date: 20120822 |