CN2622604Y - Energy saving central air conditioner temp controller - Google Patents
Energy saving central air conditioner temp controller Download PDFInfo
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- CN2622604Y CN2622604Y CN 03231195 CN03231195U CN2622604Y CN 2622604 Y CN2622604 Y CN 2622604Y CN 03231195 CN03231195 CN 03231195 CN 03231195 U CN03231195 U CN 03231195U CN 2622604 Y CN2622604 Y CN 2622604Y
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Abstract
The utility model relates to an energy-saving central air conditioning temperature-controlled device including a box, two temperature-controlled displays disposed in the box, a programmable control, a timer, an interface circuit and a sampling temperature sensor disposed in water pollination; the input ends of the two temperature-controlled displays are connected with the output end of the sampling temperature sensor; the output ends of the two temperature-controlled displays are separately connected with the input end of the programmable control; the clock signal end of the programmable control is connected with the output end of the timer and the output end of the programmable control is connected with the input end of the interface circuit; the output end of the interface circuit is separately connected with the relevant parts of the air conditioning unit. The utility model can make the central air conditioning system automatically change the temperature of the refrigerant in the preset time range; the temperature adjustment is very accurate; if the refrigerant temperature is increased by 3 to 5 degrees at night, about 15 percent of the electricity fee can be saved and the energy-saving effect is obvious.
Description
Technical field
The utility model relates to a kind of attemperating unit, relates in particular to a kind of energy-saving central air-conditioning attemperating unit.
Background technology
Existing central air-conditioning unit generally is to be controlled by mechanical temperature controller, see also shown in Figure 1, its control principle and mode are, adopt thermometer bulb to be arranged in the chilled water, change by the harmomegathus of liquid in the temperature-sensitive bag and to regulate variable resistance, make direct current generator do the both forward and reverse directions operation, press limit switch control contactor break-make by the cam on the reducing gear axle, control compressor operating, thereby the refrigerating capacity of control air-conditioning, design temperature is realized by the tension force of spring, limit switch also is to move by metallic elastic, so regulate the temperature difficulty, control accuracy is poor, more can't adjust temperature automatically.
At present, the central air-conditioning temperature controller of prior art is that can not to carry out temperature self-adjusting, if by the manual adjustment temperature, realizes that refrigerant temperature changes again very trouble round the clock, so generally adjust temperature when debugging, has just no longer adjusted temperature later on.Because the unanimity of refrigerant temperature makes that night, room temperature was lower than the room temperature on daytime, this incompatibility human body is to the needs of temperature, but also wastes energy.
Summary of the invention
The purpose of this utility model is to solve the centre air-conditioning that exists in the prior art can not adjust temperature automatically, the temperature control precision error is big, the shortcoming of power consumption, and provide a kind of improved refrigerant temperature of regulating automatically, energy-saving central air-conditioning attemperating unit that temperature control precision is high.
The purpose of this utility model is achieved in that a kind of energy-saving central air-conditioning attemperating unit, be characterized in, comprise casing, in casing, be provided with two temperature control display instruments, Programmable Logic Controller, timer, interface circuit and be arranged on sampling temperature detector in the hydrophily;
The input of described two temperature control display instruments is connected by 2 groups of outputs of lead with the sampling temperature detector; The output of these two temperature control display instruments is connected with the input of Programmable Logic Controller respectively;
The clock signal terminal of described Programmable Logic Controller is connected with the output of timer, and its output is connected with the input of interface circuit.
Above-mentioned energy-saving central air-conditioning attemperating unit, wherein, described interface circuit comprises control blower fan of cooling tower relay, control refrigerant pump relay assembly, control coolant pump relay assembly, control coolant pump relay assembly, control compressor unloading device relay assembly, control compressor contactor relay assembly; These several relay assemblies are connected with the correlation function parts respectively.
Above-mentioned energy-saving central air-conditioning attemperating unit, wherein, the input of described control blower fan of cooling tower relay is connected with the output Y15 of Programmable Logic Controller, and its output is connected with the blower fan of cooling tower switch of electric cabinet.
Above-mentioned energy-saving central air-conditioning attemperating unit; wherein; described control refrigerant pump relay assembly is made up of two relays; the coil input end of these two relays is connected with output Y14, the Y13 of Programmable Logic Controller respectively, and its output is connected with halt switch with the startup of the refrigerant pump of electric cabinet respectively.
Above-mentioned energy-saving central air-conditioning attemperating unit; wherein; described control coolant pump relay assembly is made up of two relays; the coil input end of these two relays is connected with output Y12, the Y11 of Programmable Logic Controller respectively, and its output is connected with halt switch with the startup of the coolant pump of electric cabinet respectively.
Above-mentioned energy-saving central air-conditioning attemperating unit, wherein, the coil input end of described control compressor unloading device relay is connected with the output Y4 of Programmable Logic Controller, and its output is connected with the control end of the compressor unloading device of electric cabinet.
Above-mentioned energy-saving central air-conditioning attemperating unit, wherein, described control compressor contactor relay assembly; Be made up of four relays, the coil input end of these four relays is connected with output Y3, Y2, Y1, the Y0 of Programmable Logic Controller respectively, and its output is connected with the control end of a plurality of compressor contactors respectively.
The utility model makes it compared with prior art owing to adopted above-mentioned technical scheme, has following advantage and good effect:
1, the energy-saving central air-conditioning attemperating unit of the utility model is owing to being provided with two temperature control display instruments and Programmable Logic Controller (PLC), timing clock, it utilizes the clock timing function, make central air-conditioning in the time range of setting, change the temperature of refrigerant automatically, can make room temperature suitable thereby reach, purpose that again can energy savings at night.
2, the energy-saving central air-conditioning attemperating unit of the utility model is owing to being provided with Programmable Logic Controller (PLC), being industrial special-purpose computer, and its input, output reach tens, can satisfy the temperature requirements of any central air conditioner system.Because Programmable Logic Controller (PLC) is powerful, under the exhaustless situation of output, can increase automatic startup, the hold function of coolant pump and refrigerant pump, make the operation fully automatically of air-conditioning function.
3, the energy-saving central air-conditioning attemperating unit of the utility model is owing to be provided with two temperature control display instrument control contacts conveniently, simultaneously can increase operational reliability, when wherein a temperature control display instrument has fault, two temperature demonstration has significant difference, just can find the fault of attemperating unit immediately, guarantee the reliability service of device.
4, the Programmable Logic Controller (PLC) of the energy-saving central air-conditioning attemperating unit of the utility model can make the output of this device and the control circuit of air-conditioning unit mate conveniently by the interface circuit output control signal of miniature relay composition.
Description of drawings
To the description of an embodiment of the present utility model, can further understand the purpose of this utility model, specific structural features and advantage by following in conjunction with its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the schematic diagram of existing central air-conditioning attemperating unit.
Fig. 2 is the circuit block diagram of the energy-saving central air-conditioning attemperating unit of the utility model.
Fig. 3 is the circuit theory diagrams of the energy-saving central air-conditioning attemperating unit of the utility model.
Fig. 4 is the embodiment schematic diagram of the energy-saving central air-conditioning attemperating unit of the utility model.
The specific embodiment
See also Fig. 2, energy-saving central air-conditioning attemperating unit comprises casing, is provided with two temperature control display instruments 1,2 in casing, Programmable Logic Controller (PLC) 3, timer 4, interface circuit 5 and be arranged on sampling temperature detector 6 in the hydrophily; The input of two temperature control display instruments 1,2 is connected by 2 groups of outputs of lead with sampling temperature detector 6; The output of these two temperature control display instruments 1,2 is connected with the input of Programmable Logic Controller 3 respectively; The clock signal terminal of Programmable Logic Controller 3 is connected with the output of timer 4, and its output is connected with the input of interface circuit 5.
Please cooperate referring to Fig. 3, interface circuit 5 comprises control blower fan of cooling tower relay, control refrigerant pump relay assembly, control coolant pump relay assembly, control coolant pump relay assembly, control compressor unloading device relay assembly, control compressor contactor relay assembly;
Wherein: the input of control blower fan of cooling tower relay 51 is connected with the output Y15 of Programmable Logic Controller, and its output is connected with the blower fan of cooling tower switch of electric cabinet; Control refrigerant pump relay assembly is made up of two relays 52,53, the coil input end of these two relays 52,53 is connected with output Y14, the Y13 of Programmable Logic Controller respectively, and its output is connected with halt switch with the startup of the refrigerant pump of electric cabinet respectively; Control coolant pump relay assembly is made up of two relays 54,55, the coil input end of these two relays 54,55 is connected with output Y12, the Y11 of Programmable Logic Controller respectively, and its output is connected with halt switch with the startup of the coolant pump of electric cabinet respectively; The coil input end of control compressor unloading device relay 56 is connected with the output Y4 of Programmable Logic Controller, and its output is connected with the control end of the compressor unloading device of electric cabinet; Control compressor contactor relay assembly is made up of four relays 57,58,59,510, the coil input end of these four relays 57,58,59,510 is connected with output Y3, Y2, Y1, the Y0 of Programmable Logic Controller respectively, and its output is connected with the control end of a plurality of compressor contactors respectively.
The power supply of energy-saving central air-conditioning attemperating unit derives from the central air-conditioning electric control box, and when the energising of air-conditioning unit, this device just has the power supply input, and temperature control display instrument just has temperature to show output.This device adopts programmable controller PLC and two temperature control display instruments as main devices, programmable controller PLC uses aspect a lot of as industrial control computer, reliability is than higher, two homemade temperature control display instruments are controlled the contact convenience and can be increased operational reliability, when wherein a display instrument has fault, two temperature demonstration has significant difference, just can find the fault of attemperating unit immediately, has guaranteed the operational reliability of device.The interface circuit output that the programmable controller PLC output of this device is formed by miniature relay can make the output of device and circuit and other control circuits of air-conditioning unit mate easily.
See also Fig. 4, in the present embodiment, the sampling temperature detector 6 of energy-conservation central air-conditioning attemperating unit is arranged in the air-conditioning condenser 9, the input of the control circuit in the air-conditioning control cabinet 7 is connected with the output of the interface circuit 5 of energy-conservation central air-conditioning attemperating unit, and some compressors of air conditioner 8 are connected with the compressor control end of air-conditioning control cabinet 7 respectively.
After the starting switch closure on the central air-conditioning control cabinet, programmable controller LPC is circuit-closing contacts Y14 air conditioner coolant water, contact Y12 cooling water start-up circuit in order, start refrigerant water pump and cooling water pump respectively, and the highest design temperature by temperature control display instrument 1 (XMT--122), whether detect the X1 contact closed, as the X1 junction closure, be that chilled water temperature surpasses the highest setting value, Programmable Logic Controller PLC is with the shortest time slot output contact of closed Y0-Y3 one by one, start four compressors and carry out fast-refrigerating, refrigerant temperature is descended rapidly.Closed Y15 in closed Y0, the blower fan of startup cooling tower.At this moment can be divided into two kinds of situations:
(1) the outside normal air-conditioning system of using.Refrigerant temperature drops to the lowest set temperature of temperature control display instrument 2, contact X2 closure, the contact of the closed Y4 of Programmable Logic Controller PLC makes compressor unloading coil working, lays down sub-load, chilled water moves after the week in system, if temperature control display instrument contact X2 continues closed, Programmable Logic Controller PLC will disconnect the output of Y3, stop the operation of a compressor, discharge the contact of Y4 simultaneously, make the compressor full load operation of unloading.Temperature control display instrument contact X2 is still closed after a period of time, unloads the part compressor again, by that analogy.After the part compressor is out of service, when refrigerant temperature rises to the highest design temperature of temperature control display instrument 2, temperature control display instrument contact X3 closure, the closed Y3 contact of Programmable Logic Controller PLC starts a compressor, while contact Y4 closure, lay down the sub-load of a compressor, if temperature control display instrument contact X3 continues closure chilled water moves week age in system after, Programmable Logic Controller PLC contact Y4 discharges, make the compressor full load operation of unloading, by that analogy.The air-conditioning unit is under the allotment of the utility model attemperating unit, and the refrigerant water temperature operates in the temperature of setting.
(2) outside is not used air-conditioning or is seldom used.At this moment at four compressors simultaneously under the refrigeration situation, temperature is dropped rapidly to the lowest set temperature of temperature control display instrument 2 in a short period of time.If at this moment the time of using with normal one week of chilled water operation progressively stops the work of compressor, the air-conditioning unit may break down.Programmable Logic Controller PLC can disconnect the output of Y1-Y3 rapidly in this case, makes air-conditioning unit refrigerating capacity drop to floor level, presses the step operation of normal operation later on again.
Timing clock is in setting-up time, and Programmable Logic Controller contact (X5) closure (generally being set in midnight to early morning), the temperature of compressor operating and unloading are changed into the design temperature of temperature control display instrument 1 by the design temperature of temperature control display instrument 2.Because in the time-division at midnight, temperature has obvious decline during than daytime, if chilled water temperature is the same with daytime, the refrigerating capacity of air-conditioning is just the same, the temperature in room can be more much lower than the daytime, and that the people warms up to temperature requirement in bed is pleasant, so temperature control display instrument 2 is than the high 3--5 of design temperature ℃ of temperature control display instrument 1.Because the raising of design temperature descends the cold consumption of air-conditioning system, in allotment lower compression machine minimizing running time of attemperating unit, improved the comfort of nocturnal temperature, saved electric energy.Can save 10% the electricity charge in the running time of refrigerant temperature improving.
After the starting switch on the central air-conditioning control cabinet disconnects, attemperating unit disconnects the output of the Y0--Y3 of Programmable Logic Controller PLC immediately, stop the work of compressor, disconnect the Y15 output of Programmable Logic Controller PLC simultaneously, stop the blower fan of cooling tower, and delayed time 2 minutes according to the needs of air-conditioning unit operation, the Y13 of Programmable Logic Controller PLC, Y11 export the stop sign of cooling water pump and refrigerant water pump again, by the relevant relay of each group, finish the overall process that central air-conditioning stops.
After the night in summer, temperature descended, room air conditioner does not need big as day cooling power, just can reach the room temperature on daytime, and when people's indoor temperature when sleeping soundly 2-3 degree that also should rise, to guarantee that human body is to the requirement of environment temperature in bed.So the refrigerant temperature of central air-conditioning should raise, suit with the temperature that guarantees the room, simultaneously also can energy savings: through actual measurement, use the energy-saving central air-conditioning attemperating unit of the utility model can in the time range of setting, change the temperature of refrigerant automatically, automatically it is accurate to regulate temperature, improve the temperature 3-5 degree of air conditioner coolant night, can save the electricity charge about 15%, energy-saving effect is quite obvious.
Claims (7)
1, a kind of energy-saving central air-conditioning attemperating unit is characterized in that: comprise casing, be provided with two temperature control display instruments in casing, Programmable Logic Controller, timer, interface circuit and be arranged on sampling temperature detector in the hydrophily;
The input of described two temperature control display instruments is connected by 2 groups of outputs of lead with the sampling temperature detector; The output of these two temperature control display instruments is connected with the input of Programmable Logic Controller respectively;
The clock signal terminal of described Programmable Logic Controller is connected with the output of timer, and its output is connected with the input of interface circuit.
2, energy-saving central air-conditioning attemperating unit according to claim 1, it is characterized in that: described interface circuit comprises control blower fan of cooling tower relay, control refrigerant pump relay assembly, control coolant pump relay assembly, control coolant pump relay assembly, control compressor unloading device relay assembly, control compressor contactor relay assembly; The output of these several relay assemblies is connected with the correlation function parts respectively.
3, energy-saving central air-conditioning attemperating unit according to claim 2 is characterized in that: the input of described control blower fan of cooling tower relay is connected with the output Y15 of Programmable Logic Controller, and its output is connected with the blower fan of cooling tower switch of electric cabinet.
4, energy-saving central air-conditioning attemperating unit according to claim 2; it is characterized in that: described control refrigerant pump relay assembly is made up of two relays; the coil input end of these two relays is connected with output Y14, the Y13 of Programmable Logic Controller respectively, and its output is connected with halt switch with the startup of the refrigerant pump of electric cabinet respectively.
5, energy-saving central air-conditioning attemperating unit according to claim 2; it is characterized in that: described control coolant pump relay assembly is made up of two relays; the coil input end of these two relays is connected with output Y12, the Y11 of Programmable Logic Controller respectively, and its output is connected with halt switch with the startup of the coolant pump of electric cabinet respectively.
6, energy-saving central air-conditioning attemperating unit according to claim 2, it is characterized in that: the coil input end of described control compressor unloading device relay is connected with the output Y4 of Programmable Logic Controller, and its output is connected with the control end of the compressor unloading device of electric cabinet.
7, energy-saving central air-conditioning attemperating unit according to claim 2 is characterized in that: described control compressor contactor relay assembly; Be made up of four relays, the coil input end of these four relays is connected with output Y3, Y2, Y1, the Y0 of Programmable Logic Controller respectively, and its output is connected with the control end of a plurality of compressor contactors respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231195 CN2622604Y (en) | 2003-05-15 | 2003-05-15 | Energy saving central air conditioner temp controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231195 CN2622604Y (en) | 2003-05-15 | 2003-05-15 | Energy saving central air conditioner temp controller |
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| Publication Number | Publication Date |
|---|---|
| CN2622604Y true CN2622604Y (en) | 2004-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03231195 Expired - Fee Related CN2622604Y (en) | 2003-05-15 | 2003-05-15 | Energy saving central air conditioner temp controller |
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| CN (1) | CN2622604Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589376A (en) * | 2015-06-17 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Alarm control method and device, and air-conditioning controller |
-
2003
- 2003-05-15 CN CN 03231195 patent/CN2622604Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589376A (en) * | 2015-06-17 | 2016-05-18 | 青岛海信日立空调系统有限公司 | Alarm control method and device, and air-conditioning controller |
| CN105589376B (en) * | 2015-06-17 | 2018-06-29 | 青岛海信日立空调系统有限公司 | A kind of alarm control method, device and air-conditioner controller |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |