CN215412778U - Mixed variable frequency self-adjusting cold storage type two-stage freeze dryer system - Google Patents
Mixed variable frequency self-adjusting cold storage type two-stage freeze dryer system Download PDFInfo
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- CN215412778U CN215412778U CN202120511894.6U CN202120511894U CN215412778U CN 215412778 U CN215412778 U CN 215412778U CN 202120511894 U CN202120511894 U CN 202120511894U CN 215412778 U CN215412778 U CN 215412778U
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Abstract
The utility model relates to the technical field of freeze dryers, in particular to a hybrid variable-frequency self-adjusting cold storage type two-stage freeze dryer system which comprises a precooler, a first-stage cold-dry heat exchanger, a second-stage cold-dry heat exchanger, a cold storage device, a fixed-frequency compressor, a variable-frequency compressor, a fixed-frequency condenser, a variable-frequency condenser, a heat dissipation fan, an environment temperature and humidity sensor, an air outlet temperature and humidity sensor, a flow sensor, a temperature sensor in the cold storage device and a logic controller in communication connection with the devices. The utility model can automatically adjust the running load of the refrigeration dryer according to the air consumption, prevent the refrigeration dryer from freezing due to the over-small air consumption, save energy, reduce consumption, stabilize the moisture content of the gas and prevent the refrigeration dryer from freezing easily.
Description
Technical Field
The utility model relates to the technical field of freeze dryers, in particular to a mixed variable frequency self-adjusting cold storage type two-stage freeze dryer system.
Background
The freeze dryer is a compressed gas dryer which is widely applied in industry, and plays an indispensable role in many fields such as spraying, pharmacy, power tools, packaging, spinning, cleaning and the like. In practical application, the air consumption of a user is not constant, the power regulation mode of the existing air-drying machine is similar to that of a household fixed-frequency air conditioner, and the air-drying machine is started or stopped.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the technical defects of the prior art and provides a mixed variable-frequency self-adjusting cold-storage two-stage freeze dryer system which can automatically adjust the running load of a freeze dryer according to the air consumption and prevent the freezing of the interior of the freeze dryer caused by over-small air consumption.
The mixed variable-frequency self-adjusting cold storage type two-stage freeze dryer system comprises a precooler, a first-stage cold-dry heat exchanger, a second-stage cold-dry heat exchanger, a cold storage, a constant-frequency compressor, a variable-frequency compressor, a constant-frequency condenser, a variable-frequency condenser, a heat radiation fan, an environment temperature and humidity sensor and a logic controller, wherein the logic controller is respectively in communication connection with the precooler, the first-stage cold-dry heat exchanger, the second-stage cold-dry heat exchanger, the cold storage, the constant-frequency compressor, the variable-frequency compressor, the constant-frequency condenser, the variable-frequency condenser, the heat radiation fan and the environment temperature and humidity sensor;
the precooler is provided with a first air inlet, a second air inlet, a first air outlet and a second air outlet, the second air outlet is provided with an air outlet temperature and humidity sensor, the first air outlet is connected with the first-stage air inlet of the first-stage cold-dry heat exchanger through a pipeline, the first-stage air outlet of the first-stage cold-dry heat exchanger is connected with the second-stage air inlet of the second-stage cold-dry heat exchanger through a pipeline, the second-stage air outlet of the second-stage cold-dry heat exchanger is connected with the cold accumulation air inlet of the cold accumulator through a pipeline, the cold accumulation air outlet of the cold accumulator is connected with the second air inlet of the precooler through a pipeline, and a flow sensor is arranged on a pipeline between the first air outlet of the precooler and the first-stage air inlet of the first-stage cold-dry heat exchanger;
the primary cold and dry heat exchanger is also provided with a primary compression inlet and a primary compression outlet, the secondary cold and dry heat exchanger is also provided with a secondary compression inlet and a secondary compression outlet, and the cold accumulator is also provided with a cold accumulation compression inlet and a cold accumulation compression outlet;
the first-stage compression inlet pipeline of the first-stage cold and dry heat exchanger is connected to the outlet of the variable frequency compressor, the first-stage compression outlet pipeline of the first-stage cold and dry heat exchanger is connected to the inlet of the fixed frequency compressor, and the fixed frequency condenser is arranged on a pipeline between the first-stage compression outlet of the first-stage cold and dry heat exchanger and the inlet of the fixed frequency compressor;
the outlet of the constant-frequency compressor is respectively connected with a secondary compression inlet of a secondary cold-dry heat exchanger and a cold accumulation compression inlet of a cold accumulator through pipelines, branch pipelines are arranged at the secondary compression outlet of the secondary cold-dry heat exchanger and the cold accumulation compression outlet of the cold accumulator and are converged into a main pipeline, the main pipeline is connected with the inlet of the variable-frequency compressor, and the variable-frequency condenser is arranged on the main pipeline;
the heat dissipation fan is close to the variable-frequency condenser and the fixed-frequency condenser and is used for dissipating heat of the variable-frequency condenser and the fixed-frequency condenser;
the cold accumulator is provided with a temperature sensor for measuring the temperature of the cold accumulation liquid in the cold accumulator;
and the air outlet temperature and humidity sensor, the flow sensor and the temperature sensor are all in communication connection with the logic controller.
Furthermore, each branch pipeline is provided with a throttle valve and an electric valve, and the electric valve is positioned on one side close to the main pipeline.
Furthermore, a throttle valve is also arranged on a pipeline between a first-stage compression outlet of the first-stage cold and dry heat exchanger and an inlet of the fixed-frequency compressor, and the throttle valve is arranged in front of the fixed-frequency condenser.
The utility model has the advantages that: the utility model can automatically adjust the running load of the refrigeration dryer according to the gas consumption, prevent the refrigeration dryer from freezing due to the over-small gas consumption, save energy, reduce consumption, stabilize the moisture content of the gas, and prevent the refrigeration dryer from freezing;
energy conservation and consumption reduction: when the gas consumption is insufficient, the running power of the cold dryer is automatically reduced, so that the energy-saving and consumption-reducing effects are obvious;
gas moisture content stabilization: the mixed variable frequency cold accumulation device is adopted, the adjustment range can be adjusted in a random self-adaptive manner within the range of 0-100%, so that the halt interval of the traditional cold dryer is avoided, and the gas moisture content is more stable than that of the conventional cold dryer;
not easy to freeze: the mixed frequency conversion self-adaptive adjustment is carried out, no redundant cold quantity exists, and the phenomenon of icing of condensed water in the heat exchanger is not easy to occur.
Drawings
Fig. 1 is a schematic diagram of a hybrid variable frequency self-regulating cold storage twin stage freeze dryer system of the present invention.
As shown in the figure: 1. a precooler; 2. a primary cold dry heat exchanger; 3. a secondary cold dry heat exchanger; 4. a regenerator; 5. a fixed-frequency compressor; 6. a variable frequency compressor; 7. a fixed-frequency condenser; 8. a variable frequency condenser; 9. a heat radiation fan; 10. a logic controller; 11. an air outlet temperature and humidity sensor; 12. An ambient temperature and humidity sensor; 13. a flow sensor; 14. a branch pipeline; 15. a main pipeline; 16. a temperature sensor; 17. a throttle valve; 18. an electrically operated valve; 101. a first air inlet; 102. a second air inlet; 103. a first air outlet; 104. a second air outlet; 201. a primary air inlet; 202. A primary air outlet; 203. a first stage compression inlet; 204. a first stage compression outlet; 301. a secondary air inlet; 302. a secondary air outlet; 303. a secondary compression inlet; 304. a secondary compression outlet; 401. a cold accumulation air inlet; 402. a cold accumulation air outlet; 403. a cold accumulation compression inlet; 404. a cold accumulation compression outlet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The hybrid variable-frequency self-adjusting cold storage type two-stage freeze dryer system comprises a precooler 1, a first-stage cold-dry heat exchanger 2, a second-stage cold-dry heat exchanger 3, a cold storage 4, a fixed-frequency compressor 5, a variable-frequency compressor 6, a fixed-frequency condenser 7, a variable-frequency condenser 8, a heat radiation fan 9, an environment temperature and humidity sensor 12 and a logic controller 10, wherein the logic controller 10 is respectively in communication connection with the precooler 1, the first-stage cold-dry heat exchanger 2, the second-stage cold-dry heat exchanger 3, the cold storage 4, the fixed-frequency compressor 5, the variable-frequency compressor 6, the fixed-frequency condenser 7, the variable-frequency condenser 8, the heat radiation fan 9 and the environment temperature and humidity sensor 12;
a first air inlet 101, a second air inlet 102, a first air outlet 103 and a second air outlet 104 are arranged on the precooler 1, an air outlet temperature and humidity sensor 11 is arranged on the second air outlet 104, the first air outlet 103 is connected to a first-stage air inlet 201 of a first-stage cold-dry heat exchanger 2 through a pipeline, a first-stage air outlet 202 of the first-stage cold-dry heat exchanger 2 is connected to a second-stage air inlet 301 of a second-stage cold-dry heat exchanger 3 through a pipeline, a second-stage air outlet 302 of the second-stage cold-dry heat exchanger 3 is connected to a cold storage air inlet 401 of a cold accumulator 4 through a pipeline, a cold storage air outlet 402 of the cold accumulator 4 is connected to the second air inlet 102 of the precooler 1 through a pipeline, and a flow sensor 13 is arranged on a pipeline between the first air outlet 103 of the precooler 1 and the first-stage air inlet 201 of the first-stage cold-dry heat exchanger 2;
the primary cold and dry heat exchanger 2 is also provided with a primary compression inlet 203 and a primary compression outlet 204, the secondary cold and dry heat exchanger 3 is also provided with a secondary compression inlet 303 and a secondary compression outlet 304, and the cold accumulator 4 is also provided with a cold accumulation compression inlet 403 and a cold accumulation compression outlet 404;
a first-stage compression inlet 203 of the first-stage cold and dry heat exchanger 2 is connected to an outlet of the variable frequency compressor 6 through a pipeline, a first-stage compression outlet 204 of the first-stage cold and dry heat exchanger 2 is connected to an inlet of the fixed frequency compressor 5 through a pipeline, and the fixed frequency condenser 7 is arranged on a pipeline between the first-stage compression outlet 204 of the first-stage cold and dry heat exchanger 2 and the inlet of the fixed frequency compressor 5;
the outlet of the fixed-frequency compressor 5 is respectively connected with the secondary compression inlet 303 of the secondary cold and dry heat exchanger 3 and the cold accumulation compression inlet 403 of the cold accumulator 4 through pipelines, the secondary compression outlet 304 of the secondary cold and dry heat exchanger 3 and the cold accumulation compression outlet 404 of the cold accumulator 4 are both provided with branch pipelines 14 which are converged into a main pipeline 15, the main pipeline 15 is connected with the inlet of the variable-frequency compressor 6, and the variable-frequency condenser 8 is arranged on the main pipeline 15;
the heat dissipation fan 9 is close to the variable frequency condenser 8 and the fixed frequency condenser 7 and dissipates heat of the variable frequency condenser 8 and the fixed frequency condenser 7;
the cold accumulator 4 is provided with a temperature sensor 16 for measuring the temperature of the cold accumulation liquid in the cold accumulator;
and the air outlet temperature and humidity sensor 11, the flow sensor 13 and the temperature sensor 16 are in communication connection with the logic controller 10.
Each branch pipe 14 is provided with a throttle 17 and an electric valve 18, said electric valve 18 being located on the side close to the main pipe 15.
A throttle valve 17 is also arranged on a pipeline between the first-stage compression outlet 204 of the first-stage cold and dry heat exchanger 2 and the inlet of the fixed-frequency compressor 5, and is arranged in front of the fixed-frequency condenser 7.
The working principle of the utility model is as follows:
after the cold dryer system is started, compressed air enters a primary cold-dry heat exchanger and a secondary cold-dry heat exchanger of a precooler of the cold dryer, a flow sensor detects the flow passing through every minute and transmits data to a logic controller, the logic controller carries out compressor load regulation through comprehensive judgment of the flow, the environment temperature and humidity and the compressed air temperature, and the logic regulation of individual working conditions is as follows:
1. full load operation: and when the flow sensor detects that the flow reaches the maximum processing load of the cold drying machine, starting the fixed-frequency compressor, starting the variable-frequency compressor after 10 seconds, enabling the variable-frequency compressor to reach a full-load state within 30 seconds, and performing full-force cold drying and dehumidification.
2. When the air flow is reduced to 80% of the load of the refrigeration dryer, the fixed-frequency compressor continues to operate, the variable-frequency compressor automatically and properly reduces the operation frequency according to the data of the environment temperature, the environment humidity, the exhaust temperature and the humidity, and the like, and the power consumption is reduced accordingly.
3. When the air flow is reduced to 50% of the load of the refrigeration dryer, the fixed-frequency compressor is stopped, and only the variable-frequency compressor is kept to perform self-adaptive adjustment operation between 25Hz and 60 Hz.
4. When the air flow is reduced to 24% or below of the load of the cold dryer, the fixed-frequency compression continues to stop running, the variable-frequency compressor is reduced to 25HZ running, meanwhile, redundant cold energy is automatically transferred to the cold accumulator, when the cold accumulator reaches the limit, the variable-frequency compressor is stopped, the flowing gas is cooled and dried through the cold accumulator, and when the energy of the cold accumulator cannot reach the standard, the variable-frequency compressor is started to adaptively adjust the running frequency.
5. When the arbitrary load of more than 24% drops to 0, the fixed frequency compressor stops working, the variable frequency compressor operates at low frequency to cool the cold accumulator, and the variable frequency compressor stops when the cold accumulation standard is reached.
6. At any time, the condensed water of the condenser is automatically discharged after reaching the limit.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (3)
1. Mix frequency conversion self-interacting cold-storage doublestage freeze dryer system, its characterized in that: the system comprises a precooler (1), a primary cold-dry heat exchanger (2), a secondary cold-dry heat exchanger (3), a cold accumulator (4), a fixed-frequency compressor (5), a variable-frequency compressor (6), a fixed-frequency condenser (7), a variable-frequency condenser (8), a heat radiation fan (9), an environment temperature and humidity sensor (12) and a logic controller (10), wherein the logic controller (10) is respectively in communication connection with the precooler (1), the primary cold-dry heat exchanger (2), the secondary cold-dry heat exchanger (3), the cold accumulator (4), the fixed-frequency compressor (5), the variable-frequency compressor (6), the fixed-frequency condenser (7), the variable-frequency condenser (8), the heat radiation fan (9) and the environment temperature and humidity sensor (12);
the precooler (1) is provided with a first air inlet (101), a second air inlet (102), a first air outlet (103) and a second air outlet (104), an air outlet temperature and humidity sensor (11) is arranged on the second air outlet (104), the first air outlet (103) is connected with a primary air inlet (201) of the primary cold-dry heat exchanger (2) through a pipeline, a first-stage air outlet (202) of the first-stage cold and dry heat exchanger (2) is connected with a second-stage air inlet (301) of the second-stage cold and dry heat exchanger (3) through a pipeline, a secondary air outlet (302) of the secondary cold-dry heat exchanger (3) is connected with a cold accumulation air inlet (401) of the cold accumulator (4) through a pipeline, the cold accumulation air outlet (402) of the cold accumulator (4) is connected with the second air inlet (102) of the precooler (1) through a pipeline, a flow sensor (13) is arranged on a pipeline between the first air outlet (103) of the precooler (1) and the first air inlet (201) of the first-stage cold-dry heat exchanger (2);
the primary cold and dry heat exchanger (2) is also provided with a primary compression inlet (203) and a primary compression outlet (204), the secondary cold and dry heat exchanger (3) is also provided with a secondary compression inlet (303) and a secondary compression outlet (304), and the cold accumulator (4) is also provided with a cold accumulation compression inlet (403) and a cold accumulation compression outlet (404);
a first-stage compression inlet (203) of the first-stage cold and dry heat exchanger (2) is connected to an outlet of the variable frequency compressor (6) through a pipeline, a first-stage compression outlet (204) of the first-stage cold and dry heat exchanger (2) is connected to an inlet of the fixed frequency compressor (5) through a pipeline, and the fixed frequency condenser (7) is arranged on a pipeline between the first-stage compression outlet (204) of the first-stage cold and dry heat exchanger (2) and the inlet of the fixed frequency compressor (5);
the outlet of the constant-frequency compressor (5) is respectively connected with a secondary compression inlet (303) of the secondary cold-dry heat exchanger (3) and a cold accumulation compression inlet (403) of the cold accumulator (4) through pipelines, branch pipelines (14) are respectively arranged at a secondary compression outlet (304) of the secondary cold-dry heat exchanger (3) and a cold accumulation compression outlet (404) of the cold accumulator (4) and are converged in a main pipeline (15), the main pipeline (15) is connected with the inlet of the variable-frequency compressor (6), and the variable-frequency condenser (8) is arranged on the main pipeline (15);
the heat radiation fan (9) is close to the variable frequency condenser (8) and the fixed frequency condenser (7) and is used for radiating heat of the variable frequency condenser (8) and the fixed frequency condenser (7);
a temperature sensor (16) for measuring the temperature of the cold storage liquid in the cold storage device is arranged on the cold storage device (4);
and the air outlet temperature and humidity sensor (11), the flow sensor (13) and the temperature sensor (16) are in communication connection with the logic controller (10).
2. The hybrid variable frequency self-regulating cold storage twin chiller dryer system of claim 1 wherein: each branch pipeline (14) is provided with a throttle valve (17) and an electric valve (18), and the electric valve (18) is positioned on one side close to the main pipeline (15).
3. The hybrid variable frequency self-regulating cold storage twin chiller dryer system of claim 1 wherein: a throttle valve (17) is also arranged on a pipeline between a first-stage compression outlet (204) of the first-stage cold and dry heat exchanger (2) and an inlet of the fixed-frequency compressor (5), and is arranged in front of the fixed-frequency condenser (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120511894.6U CN215412778U (en) | 2021-03-11 | 2021-03-11 | Mixed variable frequency self-adjusting cold storage type two-stage freeze dryer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120511894.6U CN215412778U (en) | 2021-03-11 | 2021-03-11 | Mixed variable frequency self-adjusting cold storage type two-stage freeze dryer system |
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| Publication Number | Publication Date |
|---|---|
| CN215412778U true CN215412778U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120511894.6U Active CN215412778U (en) | 2021-03-11 | 2021-03-11 | Mixed variable frequency self-adjusting cold storage type two-stage freeze dryer system |
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| CN (1) | CN215412778U (en) |
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- 2021-03-11 CN CN202120511894.6U patent/CN215412778U/en active Active
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