CN201892408U - Energy-saving device used for freezedryer - Google Patents
Energy-saving device used for freezedryer Download PDFInfo
- Publication number
- CN201892408U CN201892408U CN2010206361655U CN201020636165U CN201892408U CN 201892408 U CN201892408 U CN 201892408U CN 2010206361655 U CN2010206361655 U CN 2010206361655U CN 201020636165 U CN201020636165 U CN 201020636165U CN 201892408 U CN201892408 U CN 201892408U
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- trap
- cold
- cold trap
- heat medium
- outlet
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Abstract
The utility model relates to an energy-saving device used for a freezedryer, and the freezedryer comprises a cold trap, a freeze-drying box connected with the cold trap, and an electric heater, a first hot medium circulation pump, a second hot medium circulation pump and a plurality of hot medium valves, which are connected to an inlet and an outlet of the cold trap and connected between an inlet and an outlet of the freeze-drying box through a circulating pipeline, wherein a plurality of triple heat exchange boards are arranged in the cold trap and connected with a first refrigerating unit and a second refrigerating unit at the same time; and an energy-saving device comprises a hot medium temperature probe and a remote programmable logic controller. The hot medium temperature probe arranged at the outlet of the cold trap feeds back the hot medium temperature at the outlet of the cold trap to the remote programmable logic controller (PLC), and the remote programmable logic controller automatically stops the working of one refrigerating unit once the remote programmable logic controller judges that the outlet temperature at the cold trap reaches a set value, thereby achieving the effect of electrical energy saving.
Description
Technical field
The utility model relates to pharmaceutical machine, relates in particular to a kind of energy saver that is used for freeze dryer.
Background technology
At present, the direct-expansion type of the most employing of the cold-trap of producer's freeze dryer both at home and abroad forms, the cold-trap of this form is in whole freeze-drying process even at the later stage of drying, and the refrigeration machine that it was equipped with all can not stop.This is because the water coil of catching in the cold-trap all provides cold by compressor independently, if stop a compressor, then the ice on the coil pipe can not melt because there being the supply of cold, thereby influences the safety of freeze-dried products.Therefore; the insider has developed a kind of triple exchange type cold-trap; promptly adopting in cold-trap by two cover refrigeration unit provides triple heat exchanger plates of cold to replace traditional coil pipe; and the copper pipe of filling cold-producing medium (freon) is set in triple heat exchanger plates and fills conduction oil (silicone oil) as medium; because the thermal capacity of conduction oil (silicone oil) is big; variations in temperature is slow; therefore; when freeze dryer meets with power failure danger suddenly; during the compressor shutdown of refrigeration unit; also can reduce the programming rate of condenser, thereby protect freeze-dried products as much as possible.
In general, the cold-trap of said structure is under the normal power supply environment, and two cover refrigeration unit can continue to provide cold to triple heat exchanger plates simultaneously, guarantee refrigeration; Yet, freeze dryer in whole lyophilization cycle, underrun chronic, especially in the freeze-drying middle and later periods even under zero load condition, the continuous services of two cover refrigeration unit have caused a large amount of waste of electric energy on the contrary.Therefore, advocate energetically under the situation of energy-conserving and environment-protective, press for this cold-trap is taked necessary conservation measures in current society.
The utility model content
In order to solve the problem that above-mentioned prior art exists, the utility model aims to provide a kind of energy saver that is used for freeze dryer, under the prerequisite that guarantees freeze dryer cold-trap operate as normal, reaches the effect of saves energy.
A kind of energy saver that is used for freeze dryer described in the utility model, described freeze dryer comprises cold-trap, the freeze drying box that is connected with this cold-trap and be connected described cold-trap by circulating line and go out, electric heater between inlet and the freeze drying box gateway, first heat medium circulation pump, second heat medium circulation pump and some heating agent valves, described cold-trap inside is provided with some triple heat exchanger plates, and described triple heat exchanger plate is connected with second refrigeration unit with first refrigeration unit simultaneously, described energy saver comprises a heat medium temperature probe and a long-range programmable logic controller (PLC)
Described heat medium temperature probe is arranged on described cold-trap outlet, measures the temperature of the interior heating agent of circulating line of described cold-trap outlet, and exports a temperature signal;
Described long-range programmable logic controller (PLC) is connected with described heat medium temperature probe, according to temperature signal from this heat medium temperature probe output, compare with default temperature minimum detectable signal, and to described first refrigeration unit and second refrigeration unit output control signal corresponding.
At the above-mentioned energy saver that is used for freeze dryer, described second heat medium circulation pump is connected between the entry and exit of described cold-trap, and forms refrigeration cycle with described triple heat exchanger plates, first refrigeration unit and second refrigeration unit.
Owing to adopted above-mentioned technical solution, the utility model is by being provided with the heat medium temperature probe in the cold-trap outlet, the heat medium temperature of cold-trap outlet is fed back to long-range programmable logic controller (PLC) (being PLC), after long-range programmable logic controller (PLC) judges that the cold-trap outlet temperature arrives setting value, then stop a cover refrigeration unit job automatically, because the power of compressor is all bigger in the refrigeration unit, per hour electricity consumption all has tens degree, in whole lyophilization cycle, it is low chronic to load, therefore, adopt the utility model after, simple freeze-dry process is produced a collection of product and will be saved several Baidu electricity, complicated technology even can save several thousand degree; Simultaneously, the utility model also makes the compressor in the refrigeration unit can not move under the temperature that oversteps the extreme limit, and is therefore not fragile, thereby prolonged service life of equipment.
Description of drawings
Fig. 1 is a kind of scheme of installation that is used for the energy saver of freeze dryer of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figure 1, freeze dryer comprises cold-trap 1, the freeze drying box 2 that is connected with this cold-trap 1 and is connected electric heater 3, first heat medium circulation pump 4, second heat medium circulation pump 5 and some heating agent valves 6 between cold-trap 1 entry and exit and freeze drying box 2 gateways by circulating line, cold-trap 1 inside is provided with some triple heat exchanger plates 11, and triple heat exchanger plate 11 is connected with second refrigeration unit 8 with first refrigeration unit 7 simultaneously; Second heat medium circulation pump 5 is connected between the entry and exit of cold-trap 1, and forms refrigeration cycle with triple heat exchanger plates 11, first refrigeration unit 7 and second refrigeration unit 8.
The utility model, promptly a kind of energy saver that is used for freeze dryer comprises that one is arranged on heat medium temperature the probe 9 and one long-range programmable logic controller (PLC) (not shown) in the above-mentioned refrigeration cycle, wherein,
Heat medium temperature probe 9 is arranged on cold-trap 1 outlet, is used to measure the temperature of heating agent in the circulating line of cold-trap 1 outlet, and exports a temperature signal;
Long-range programmable logic controller (PLC) is connected with heat medium temperature probe 9, according to temperature signal from these heat medium temperature probe 9 outputs, compare with default temperature minimum detectable signal, and to first refrigeration unit 7 and second refrigeration unit, 8 output control signal corresponding, promptly after long-range programmable logic controller (PLC) judges that cold-trap 1 outlet temperature arrives setting value, then stop the work of first refrigeration unit 7 or second refrigeration unit 8 automatically, thereby realize energy-conservation effect.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (2)
1. energy saver that is used for freeze dryer, described freeze dryer comprises cold-trap, the freeze drying box that is connected with this cold-trap and be connected described cold-trap by circulating line and go out, electric heater between inlet and the freeze drying box gateway, first heat medium circulation pump, second heat medium circulation pump and some heating agent valves, described cold-trap inside is provided with some triple heat exchanger plates, and described triple heat exchanger plate is connected with second refrigeration unit with first refrigeration unit simultaneously, it is characterized in that, described energy saver comprises a heat medium temperature probe and a long-range programmable logic controller (PLC)
Described heat medium temperature probe is arranged on described cold-trap outlet;
Described long-range programmable logic controller (PLC) is connected with described heat medium temperature probe.
2. the energy saver that is used for freeze dryer according to claim 1, it is characterized in that, described second heat medium circulation pump is connected between the entry and exit of described cold-trap, and forms refrigeration cycle with described triple heat exchanger plates, first refrigeration unit and second refrigeration unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206361655U CN201892408U (en) | 2010-12-01 | 2010-12-01 | Energy-saving device used for freezedryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206361655U CN201892408U (en) | 2010-12-01 | 2010-12-01 | Energy-saving device used for freezedryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201892408U true CN201892408U (en) | 2011-07-06 |
Family
ID=44221882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206361655U Expired - Fee Related CN201892408U (en) | 2010-12-01 | 2010-12-01 | Energy-saving device used for freezedryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201892408U (en) |
-
2010
- 2010-12-01 CN CN2010206361655U patent/CN201892408U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20121201 |