CN103574953B - Many temperature heat-exchange system that a kind of single compressed machine refrigerant controls - Google Patents
Many temperature heat-exchange system that a kind of single compressed machine refrigerant controls Download PDFInfo
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- CN103574953B CN103574953B CN201310559482.XA CN201310559482A CN103574953B CN 103574953 B CN103574953 B CN 103574953B CN 201310559482 A CN201310559482 A CN 201310559482A CN 103574953 B CN103574953 B CN 103574953B
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Abstract
The many temperature heat-exchange system that the invention discloses the control of a kind of single compressed machine refrigerant completes multiple independent temperature demand for control by using single refrigeration unit, makes it both to control controlled object temperature, again reduces overall energy consumption, saved production cost.
Description
[technical field]
The present invention relates to field of heat exchange, particularly relate to many temperature heat-exchange system that a kind of single compressed machine refrigerant controls.
[background technology]
How accurately can control the flow (the expansion flow by compression refrigerant) of refrigerator refrigerant, carry out heat exchange with liquid or gas, thus the precision temperature control reaching liquid or gas being refrigerator refrigerant--water or air heat exchange frozen water machine in the industry for the important topic of the temperature constant of equipment or object.For there being multiple independent temperature to control, the particularly constant temperature system of precision temperature control demand, typically uses multiple independently compressor and carries out freezing or heating.Use media or the object of the multiple pinpoint target temperature of single refrigeration unit controls, particularly precision temperature control, need to solve the difference due to the operating mode of variant temperature channel, as: run or stop, temperature is high or low, and affects the problem of the compression/expansion of precision that other channel temperatures control and refrigeration system refrigerant.
[summary of the invention]
The technical problem to be solved in the present invention is to provide many temperature heat-exchange system that a kind of single compressed machine refrigerant controls, and uses single refrigeration unit to complete multiple independent temperature demand for control, to reach temperature control, energy-conservation object.
For solving the problems of the technologies described above, the invention provides many temperature heat-exchange system that a kind of single compressed machine refrigerant controls, comprising the first circulation of fluid path, the second circulation of fluid path, cooling fluid circuit and factory's business fluid passage,
Described first circulation of fluid path comprises the outlet of First Heat Exchanger, the first circulation of fluid entrance and the first circulation of fluid, first circulation of fluid and cooling fluid carry out heat exchange at described First Heat Exchanger place, the second output port that described First Heat Exchanger comprises first input end mouth, the first output port be communicated with first input end mouth, the second input port and is communicated with the second input port
Described second circulation of fluid path comprises the outlet of the second heat exchanger, the second circulation of fluid entrance and the second circulation of fluid, second circulation of fluid and cooling fluid carry out heat exchange at described second heat exchanger place, the 4th output port that described second heat exchanger comprises the 3rd input port, the 3rd output port be communicated with the 3rd input port, four-input terminal mouth and is communicated with four-input terminal mouth
Described cooling fluid circuit comprises compressor, 3rd heat exchanger, first electric expansion valve, second electric expansion valve and the 3rd electric expansion valve, cooling fluid and factory fluid of being engaged in carries out heat exchange at described 3rd heat exchanger place, described 3rd heat exchanger comprises the 5th input port, the 5th output port be communicated with the 5th input port, 6th input port and the 6th output port be communicated with the 6th input port, the output port of described first electric expansion valve is connected with the second input port of described First Heat Exchanger, the input port of described first electric expansion valve is connected with the 6th output port of described 3rd heat exchanger, the output port of described second electric expansion valve is connected with the four-input terminal mouth of described second heat exchanger, the input port of described second electric expansion valve is connected with the 6th output port of described 3rd heat exchanger, the output port of described 3rd electric expansion valve is connected with the input port of described compressor, the input port of described 3rd electric expansion valve is connected with the 6th output port of described 3rd heat exchanger, the output port of described compressor is connected with the 6th input port of described 3rd heat exchanger, the input port of described compressor is connected with the second output port of described First Heat Exchanger, or be connected with the 4th output port of described second heat exchanger, or be connected with the output port of the 3rd electric expansion valve,
Described factory business fluid flows into from the 5th input port of described 3rd heat exchanger, flows out from the 5th output port of described 3rd heat exchanger.
Further, described first circulation of fluid path also comprises the first temperature sensor for detecting described first circulation of fluid temperature, described second circulation of fluid path also comprises the second temperature sensor for detecting described second circulation of fluid temperature, and the circulation of fluid temperature detected based on described first temperature sensor and the second temperature sensor controls the switch ratio of the first electric expansion valve, the second electric expansion valve and the 3rd electric expansion valve.
Further, the switch ratio of described first electric expansion valve, the second electric expansion valve and the 3rd electric expansion valve is controlled.
Further, described cooling fluid circuit has three loops, and Article 1 loop is: the loop that described compressor, described 3rd heat exchanger, described first electric expansion valve and described First Heat Exchanger are formed,
Article 2 loop is: the loop that described compressor, described 3rd heat exchanger, described 3rd electric expansion valve are formed,
Article 3 loop is: the loop that described compressor, described 3rd heat exchanger, described second electric expansion valve and described second heat exchanger are formed.
Further, described first circulation of fluid path also comprises the first circulating pump for increasing described first circulation of fluid circulation power, the input port of described first circulating pump is communicated with the first output port of described First Heat Exchanger, the output port of described first circulating pump and described first circulation of fluid outlet.
Further, described first circulating pump is provided with primary heater, to improve the temperature of the first circulation of fluid.
Further, described second circulation of fluid path also comprises the second circulating pump for increasing described second circulation of fluid circulation power, the input port of described second circulating pump is communicated with the 3rd output port of described second heat exchanger, the output port of described second circulating pump and described second circulation of fluid outlet.
Further, described second circulating pump is provided with secondary heater, to improve the temperature of the second circulation of fluid.
Further, described circulation of fluid is liquid or gas, and described cooling fluid is freon refrigerant, and described factory business fluid is cooling water.
Compared with prior art, the present invention uses single refrigeration unit to complete multiple independent temperature demand for control, makes it both to control controlled object temperature, again reduces overall energy consumption, saved production cost.
[accompanying drawing explanation]
Fig. 1 is many temperature heat-exchange system structural representation in one embodiment that the single compressed machine refrigerant in the present invention controls.
Wherein: 100 is many temperature heat-exchange system that single compressed machine refrigerant controls, 110 is the first circulation of fluid path, 111 is the first circulation of fluid entrance, 112 is the first circulation of fluid outlet, 113 is First Heat Exchanger, 114 is the first temperature sensor, 115 is primary heater, 116 is the first circulating pump, 120 is the second circulation of fluid path, 121 is the second circulation of fluid entrance, 122 is the second circulation of fluid outlet, 123 is the second heat exchanger, 124 is the second temperature sensor, 125 is secondary heater, 126 is the second circulating pump, 130 is factory's business fluid passage, 131 is factory's business fluid intake, 132 is factory's business fluid issuing, 133 is the 3rd heat exchanger, 140 is cooling fluid circuit, 141 is the first electric expansion valve, 142 is the second electric expansion valve, 143 is the 3rd electric expansion valve, 144 is compressor.
[detailed description of the invention]
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with detailed description of the invention, the present invention is further detailed explanation.
Alleged herein " embodiment " or " embodiment " refers to that the special characteristic relevant to described embodiment, structure or characteristic at least can be contained at least one implementation of the present invention.Different local in this manual " in one embodiment " occurred be non-essential all refers to same embodiment, must not be yet with other embodiments mutually exclusive separately or select embodiment.In addition, represent sequence of modules in the method for one or more embodiment, flow chart or functional block diagram and revocablely refer to any particular order, not also being construed as limiting the invention.
Fig. 1 is many temperature heat-exchange system structural representation in one embodiment that the single compressed machine refrigerant in the present invention controls.As shown in Figure 1, many temperature heat-exchange system 100 that described single compressed machine refrigerant controls comprises the first circulation of fluid path 110, second circulation of fluid path 120, cooling fluid circuit 140 and factory's business fluid passage 130.
Described first circulation of fluid path 110 comprises First Heat Exchanger 113, first circulation of fluid entrance 111 and the first circulation of fluid outlet 112.First circulation of fluid and cooling fluid carry out heat exchange at described First Heat Exchanger 113 place.
The second output port that described First Heat Exchanger 113 comprises first input end mouth, the first output port be communicated with first input end mouth, the second input port and is communicated with the second input port.
Described first circulation of fluid flows into First Heat Exchanger 113 through the first circulation of fluid entrance 111 by the first input end mouth of described First Heat Exchanger 113, fluid flows out from the first output port of First Heat Exchanger 113, and is flowed out by described second circulation of fluid outlet 112.
Described second circulation of fluid path 120 comprises the second heat exchanger 123, second circulation of fluid entrance 121 and the second circulation of fluid outlet the 122, second circulation of fluid and cooling fluid and carries out heat exchange at described second heat exchanger 123 place.
The 4th output port that described second heat exchanger 123 comprises the 3rd input port, the 3rd output port be communicated with the 3rd input port, four-input terminal mouth and is communicated with four-input terminal mouth.
Described second circulation of fluid flows into the second heat exchanger 123 through the second circulation of fluid entrance 121 by the 3rd input port of described second heat exchanger 123, fluid flows out from the 3rd output port of the second heat exchanger 123, and is flowed out by described second circulation of fluid outlet 122.
Described factory business fluid intake 131 is connected with the 5th input port of described 3rd heat exchanger 133, and described factory business fluid issuing 132 is connected with the 5th output port of described 3rd heat exchanger 133.
Described cooling fluid circuit 140 comprises compressor 144, the 3rd heat exchanger 133, first electric expansion valve 141, second electric expansion valve 142 and the 3rd electric expansion valve 143.Cooling fluid and factory fluid of being engaged in carries out heat exchange at described 3rd heat exchanger 133 place.
Described 3rd heat exchanger 133 comprises the 5th input port, the 5th output port be communicated with the 5th input port, 6th input port and the 6th output port be communicated with the 6th input port, the output port of described first electric expansion valve 141 is connected with the second input port of described First Heat Exchanger 113, the input port of described first electric expansion valve 141 is connected with the 6th output port of described 3rd heat exchanger 133, the output port of described second electric expansion valve 142 is connected with the four-input terminal mouth of described second heat exchanger 123, the input port of described second electric expansion valve 142 is connected with the 6th output port of described 3rd heat exchanger 133, the output port of described 3rd electric expansion valve 143 is connected with the input port of described compressor 144, the input port of described 3rd electric expansion valve 143 is connected with the 6th output port of described 3rd heat exchanger 133, the output port of described compressor 144 is connected with the 6th input port of described 3rd heat exchanger 133, the input port of described compressor 144 is connected with the second output port of described First Heat Exchanger 113, or be connected with the 4th output port of described second heat exchanger 123, or be connected with the output port of the 3rd electric expansion valve 143.
Described cooling fluid flows out through the 6th input port of the 3rd heat exchanger 133 via the output of compressor 144, a part flows into First Heat Exchanger 113 through the first electric expansion valve 141, cooling fluid flows out from the second delivery outlet end of First Heat Exchanger 113, gets back in compressor 144 by the input of compressor 144; Another part, through the 3rd electric expansion valve 143, is got back in compressor 144 by the input of compressor 144; Some flows into the second heat exchanger 123 through the second electric expansion valve 142, and cooling fluid flows out from the 4th delivery outlet end of the second heat exchanger 123, is got back in compressor 144 by the input of compressor 144.
Wherein the switch ratio of the first electric expansion valve 141, second electric expansion valve 142 and the 3rd electric expansion valve 143 is adjustable, such as 100% is opened into 0% unlatching, and every 5% 1 adjustment grade, so then has 0%, 5%, 10% ...---95%, 100% much more so switch proportion grades, like this relative to overall system control flow bore, can point-device adjustment flow, thus the power of heat exchange can be controlled accurately, and then the temperature of accurate controlled circulation fluid.Each electric expansion valve, with the stepper motor of gauge tap ratio or direct current generator, controls the switch ratio of described electric expansion valve by controlling described stepper motor or direct current generator.During high temperature, as circulation of fluid 80 degrees Celsius, 20 degrees Celsius need be down to, then allow the first electric expansion valve 141 open tune up, second electric expansion valve 142 is opened and is tuned up, 3rd electric expansion valve 143 is opened and is turned down or close, and increases the heat exchange amount of cooling fluid and circulation of fluid, to reach the object that high-amplitude reduces circulation of fluid temperature; During low temperature, as circulation of fluid 25 degrees Celsius, 20 degrees Celsius need be down to, then allow the first electric expansion valve 141 open turn down, second electric expansion valve 142 is opened and is turned down, 3rd electric expansion valve 143 is opened and is tuned up, and reduces the heat exchange amount of cooling fluid and circulation of fluid, to reach the object that low amplitude reduces circulation of fluid temperature.
Can find out, described cooling fluid circuit 140 has three paths, Article 1, path is: the loop that described compressor 144, described 3rd heat exchanger 133, described first electric expansion valve 141 and described First Heat Exchanger 113 are formed, concrete, described cooling fluid flows out from described compressor 144, flow through described 3rd heat exchanger 133, first electric expansion valve 141 and described First Heat Exchanger 113, carry out heat exchange at described 3rd heat exchanger 133 and First Heat Exchanger 113 place, get back to described compressor 144 subsequently.
Article 2 loop is: the loop that described compressor 144, described 3rd heat exchanger 133, described 3rd electric expansion valve 143 are formed, concrete, described cooling fluid flows out from described compressor 144, flow through described 3rd heat exchanger 133 and the 3rd electric expansion valve 143, carry out heat exchange at described 3rd heat exchanger 133 place, get back to described compressor 144 subsequently.
Article 3 loop is: the loop that described compressor 144, described 3rd heat exchanger 133, described second electric expansion valve 142 and described second heat exchanger 123 are formed, concrete, described cooling fluid flows out from described compressor 144, flow through described 3rd heat exchanger 133, second electric expansion valve 142 and described second heat exchanger 123, carry out heat exchange at described 3rd heat exchanger 133 and the second heat exchanger 123 place, get back to described compressor 144 subsequently.
In the present embodiment, described first circulation of fluid path 110 also comprises the first circulating pump 116 for increasing described first circulation of fluid circulation power, the input port of described first circulating pump 116 is communicated with the first output port of described First Heat Exchanger 113, and the output port of described first circulating pump 116 exports 112 with described circulation of fluid and is communicated with.In order to improve the temperature of the first circulation of fluid, described first circulating pump 116 is provided with primary heater 115.Described second circulation of fluid path 120 also comprises the second circulating pump 126 for increasing described second circulation of fluid circulation power, the input port of described second circulating pump 126 is communicated with the 3rd output port of described second heat exchanger 123, and the output port of described second circulating pump 126 exports 122 with described second circulation of fluid and is communicated with.In order to improve the temperature of the second circulation of fluid, described second circulating pump 126 is provided with secondary heater 125.
Described first circulation of fluid path 110 also comprises the first temperature sensor 114, and it is for detecting the temperature of described first circulation of fluid.The input port of described first temperature sensor 114 is communicated with the output port of described first circulating pump 116, and the output port of described first temperature sensor 114 exports 112 with described first circulation of fluid and is connected.Described first circulation of fluid flows out from the first output port of described First Heat Exchanger 113, through the first circulating pump 116 and the first temperature sensor 114, arrives the first circulation of fluid outlet 112.Described second circulation of fluid path 120 also comprises the second temperature sensor 124, and it is for detecting the temperature of described second circulation of fluid.The input port of described second temperature sensor 124 is communicated with the output port of described second circulating pump 126, and the output port of described second temperature sensor 124 exports 122 with described second circulation of fluid and is connected.Described second circulation of fluid flows out from the 3rd output port of described second heat exchanger 123, through the second circulating pump 126 and the second temperature sensor 124, arrives the second circulation of fluid outlet 122.
The second circulation of fluid temperature that the first circulation of fluid temperature detected based on described first temperature sensor 114 and the second temperature sensor 124 detect controls the switch ratio of the first electric expansion valve 141, second electric expansion valve 142 and the 3rd electric expansion valve 143, thus the control realized to cooling fluid in the many temperature heat-exchange system 100 to the control of single compressed machine refrigerant, and then the accurate temperature realizing controlled device controls.
In the present embodiment, described circulation of fluid is liquid or gas, and described cooling fluid is freon refrigerant, and described factory business fluid is cooling water.
In sum, many temperature heat-exchange system 100 that single compressed machine refrigerant of the present invention controls arranges the first electric expansion valve 141 between the 6th output port and the second input port of described First Heat Exchanger 113 of described 3rd heat exchanger 133; Between the 6th output port and the four-input terminal mouth of described second heat exchanger 123 of described 3rd heat exchanger 133, the second electric expansion valve 142 is set.Many temperature heat-exchange system 100 that described single compressed machine refrigerant controls also comprise be arranged on described first circulation of fluid path 110 for the first temperature sensor 114 of detecting described first circulation of fluid temperature and the second temperature sensor 124 for detecting described second circulation of fluid temperature be arranged on described second circulation of fluid path 120, the second circulation of fluid temperature that the first circulation of fluid temperature detected based on described first temperature sensor 114 and described second temperature sensor 124 detect controls the switch ratio of each electric expansion valve, regulate a part of cooling fluid and first, the heat exchange amount of the second circulation of fluid.Utilize the electric expansion valve proportion adjustment of more than 1 or 2 to reach wide temperature field and control object, thus effectively accomplish the accurate temperature controlling of circulating fluid a wider temperature range.
Its specific works principle is: described cooling fluid flows out from compressor 144, through the 3rd heat exchanger 133, described cooling fluid is engaged in after fluid carries out heat exchange at the 3rd heat exchanger 133 place and factory, a part is through the first electric expansion valve 141 and First Heat Exchanger 113, and described cooling fluid gets back to compressor 144 after First Heat Exchanger 113 place and the first circulation of fluid carry out heat exchange; A part is through the second electric expansion valve 142 and the second heat exchanger 123, and described cooling fluid gets back to compressor 144 at the second heat exchanger 123 place and after carrying out heat exchange with the second circulation of fluid; Another part gets back to compressor 144 after the 3rd electric expansion valve 143.
It should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (8)
1. many temperature heat-exchange system of single compressed machine refrigerant control, is characterized in that, comprises the first circulation of fluid path, the second circulation of fluid path, cooling fluid circuit and factory's business fluid passage,
Described first circulation of fluid path comprises the outlet of First Heat Exchanger, the first circulation of fluid entrance and the first circulation of fluid, first circulation of fluid and cooling fluid carry out heat exchange at described First Heat Exchanger place, the second output port that described First Heat Exchanger comprises first input end mouth, the first output port be communicated with first input end mouth, the second input port and is communicated with the second input port
Described second circulation of fluid path comprises the outlet of the second heat exchanger, the second circulation of fluid entrance and the second circulation of fluid, second circulation of fluid and cooling fluid carry out heat exchange at described second heat exchanger place, the 4th output port that described second heat exchanger comprises the 3rd input port, the 3rd output port be communicated with the 3rd input port, four-input terminal mouth and is communicated with four-input terminal mouth
Described cooling fluid circuit comprises compressor, 3rd heat exchanger, first electric expansion valve, second electric expansion valve and the 3rd electric expansion valve, cooling fluid and factory fluid of being engaged in carries out heat exchange at described 3rd heat exchanger place, described 3rd heat exchanger comprises the 5th input port, the 5th output port be communicated with the 5th input port, 6th input port and the 6th output port be communicated with the 6th input port, the output port of described first electric expansion valve is connected with the second input port of described First Heat Exchanger, the input port of described first electric expansion valve is connected with the 6th output port of described 3rd heat exchanger, the output port of described second electric expansion valve is connected with the four-input terminal mouth of described second heat exchanger, the input port of described second electric expansion valve is connected with the 6th output port of described 3rd heat exchanger, the output port of described 3rd electric expansion valve is connected with the input port of described compressor, the input port of described 3rd electric expansion valve is connected with the 6th output port of described 3rd heat exchanger, the output port of described compressor is connected with the 6th input port of described 3rd heat exchanger, the input port of described compressor is connected with the second output port of described First Heat Exchanger, or be connected with the 4th output port of described second heat exchanger, or be connected with the output port of the 3rd electric expansion valve,
Described factory business fluid flows into from the 5th input port of described 3rd heat exchanger, flows out from the 5th output port of described 3rd heat exchanger,
Described first circulation of fluid path also comprises the first temperature sensor for detecting described first circulation of fluid temperature, described second circulation of fluid path also comprises the second temperature sensor for detecting described second circulation of fluid temperature, and the circulation of fluid temperature detected based on described first temperature sensor and the second temperature sensor controls the switch ratio of the first electric expansion valve, the second electric expansion valve and the 3rd electric expansion valve.
2. many temperature heat-exchange system of single compressed machine refrigerant control as claimed in claim 1, is characterized in that: the switch ratio of described first electric expansion valve, the second electric expansion valve and the 3rd electric expansion valve is controlled.
3. many temperature heat-exchange system of single compressed machine refrigerant control as claimed in claim 1, it is characterized in that: described cooling fluid circuit has three loops, Article 1, loop is: the loop that described compressor, described 3rd heat exchanger, described first electric expansion valve and described First Heat Exchanger are formed
Article 2 loop is: the loop that described compressor, described 3rd heat exchanger, described 3rd electric expansion valve are formed,
Article 3 loop is: the loop that described compressor, described 3rd heat exchanger, described second electric expansion valve and described second heat exchanger are formed.
4. many temperature heat-exchange system of single compressed machine refrigerant control as claimed in claim 1, it is characterized in that: described first circulation of fluid path also comprises the first circulating pump for increasing described first circulation of fluid circulation power, the input port of described first circulating pump is communicated with the first output port of described First Heat Exchanger, the output port of described first circulating pump and described first circulation of fluid outlet.
5. many temperature heat-exchange system of single compressed machine refrigerant control as claimed in claim 4, is characterized in that: described first circulating pump is provided with primary heater, to improve the temperature of the first circulation of fluid.
6. many temperature heat-exchange system of single compressed machine refrigerant control as claimed in claim 1, it is characterized in that: described second circulation of fluid path also comprises the second circulating pump for increasing described second circulation of fluid circulation power, the input port of described second circulating pump is communicated with the 3rd output port of described second heat exchanger, the output port of described second circulating pump and described second circulation of fluid outlet.
7. many temperature heat-exchange system of single compressed machine refrigerant control as claimed in claim 6, is characterized in that: described second circulating pump is provided with secondary heater, to improve the temperature of the second circulation of fluid.
8. many temperature heat-exchange system of single compressed machine refrigerant control as claimed in claim 1, it is characterized in that: described circulation of fluid is liquid or gas, described cooling fluid is freon refrigerant, and described factory business fluid is cooling water.
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| CN201310559482.XA CN103574953B (en) | 2013-11-12 | 2013-11-12 | Many temperature heat-exchange system that a kind of single compressed machine refrigerant controls |
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| CN201310559482.XA CN103574953B (en) | 2013-11-12 | 2013-11-12 | Many temperature heat-exchange system that a kind of single compressed machine refrigerant controls |
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| CN103574953B true CN103574953B (en) | 2016-01-13 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106152583B (en) * | 2016-08-23 | 2019-03-12 | 无锡溥汇机械科技有限公司 | A kind of High-precision temperature control type heat exchange system |
| CN106482392A (en) * | 2016-12-01 | 2017-03-08 | 无锡溥汇机械科技有限公司 | A kind of two temperature one frozen water machine precision heat-exchange system |
| CN106440595A (en) * | 2016-12-03 | 2017-02-22 | 无锡溥汇机械科技有限公司 | Fluid pressure control system of two-temperature integral water chiller |
| CN111023606A (en) * | 2019-12-27 | 2020-04-17 | 无锡溥汇机械科技有限公司 | Large-flow small-temperature-difference precise temperature control heat exchange system |
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