CN210463650U - Precise temperature control system for circulating high-low temperature liquid of barrel pump - Google Patents
Precise temperature control system for circulating high-low temperature liquid of barrel pump Download PDFInfo
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- CN210463650U CN210463650U CN201921098998.8U CN201921098998U CN210463650U CN 210463650 U CN210463650 U CN 210463650U CN 201921098998 U CN201921098998 U CN 201921098998U CN 210463650 U CN210463650 U CN 210463650U
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Abstract
The utility model discloses a bucket pump circulation high low temperature liquid circulation accurate temperature control system, its include the evaporimeter, with liquid return pipe and drain pipe, the setting of evaporimeter intercommunication are in return circulating pump and heater on the liquid pipe, with the evaporimeter forms circulation loop's low pressure circulation bucket, with low pressure circulation bucket forms circulation loop's refrigerant system, sets up the evaporimeter with refrigerant canned motor pump on the low pressure circulation bucket intercommunication pipeline, the refrigerant system is in including compressor, condenser and the setting of establishing ties low pressure circulation bucket with throttling arrangement on the condenser intercommunication pipeline, be provided with first thermometer and level sensor on the low pressure circulation bucket. The utility model can realize stable operation condition of the compressor, safe operation and long service life in the medium large temperature area range; refrigerant frequency conversion control, temperature control is stable and energy is saved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of the temperature control equipment, especially, relate to a refrigerating unit based on barrel pump circulation can adopt the compressor to control the temperature under high medium temperature.
[ background of the invention ]
In the experimental testing industry, it is often necessary to maintain a constant high temperature media temperature, typically in the range of 100 ℃ to 200 ℃. When the test conditions require a reduction from high to low temperatures, there are generally two ways of reducing the temperature. The first is to adopt cooling water circulation to indirectly cool the medium in a medium high-temperature region and then adopt a compressor to operate in a medium low-temperature region to indirectly cool the medium; the second method is that the high-temperature area and the low-temperature area are both operated by a compressor to carry out whole-course cooling on the medium.
The first method has the advantages that the compressor is not operated when the temperature is reduced in the high-temperature region, so that the energy is saved; cooling is carried out on the high-temperature medium by cooling water without phase change heat absorption, and temperature control is accurate; the disadvantages are that a separate cooling water loop is required to be added, the volume and the cost of the equipment are required to be increased, and the occupied area and the cost of the equipment are not dominant.
The second method has the advantages of small equipment volume, simple control, and high cooling speed due to the adoption of refrigerant phase change cooling; however, the defect is that when the temperature of the high-temperature area is reduced, the suction temperature of the compressor is high, the motor in the compressor is designed to be reduced by the refrigerant, if the temperature of the refrigerant is high, the motor is not well cooled, and the compressor can be subjected to overheat protection and stop running, so that the compressor cannot normally work.
Therefore, it is necessary to provide a new precise temperature control system for circulating high and low temperature liquid by using a barrel pump to solve the above problems.
[ Utility model ] content
The utility model mainly aims at providing a precise temperature control system for circulating high and low temperature liquid by a barrel pump, which can realize stable operation condition of a compressor, safe operation and long service life in the medium large temperature area range; refrigerant frequency conversion control, temperature control is stable and energy is saved.
The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a bucket pump circulation high low temperature liquid circulation precision temperature control system, its include the evaporimeter, with liquid return pipe and drain pipe that the evaporimeter communicates, set up circulating pump and heater on the liquid return pipe, with the low pressure circulation bucket that the evaporimeter formed circulation circuit, with the refrigerant system that low pressure circulation bucket formed circulation circuit, set up the evaporimeter with refrigerant shield pump on the low pressure circulation bucket intercommunication pipeline, the refrigerant system is including compressor, condenser and the setting of establishing ties low pressure circulation bucket with throttling arrangement on the condenser intercommunication pipeline, be provided with first thermometer and level sensor on the low pressure circulation bucket.
Furthermore, the throttling device is controlled by a controller according to the liquid level sensor to ensure the stability of the liquid level in the low-pressure circulating barrel.
Further, the compressor is controlled by a controller according to the first thermometer to ensure that the temperature of the liquid in the low-pressure circulating barrel is constant.
Further, the throttling device adopts an electronic expansion valve.
Further, when the saturation temperature in the low-pressure circulating barrel reaches a set temperature, the compressor is unloaded or stops working.
Furthermore, the refrigerant shielding pump is a variable frequency magnetic pump.
Furthermore, the circulating pump adopts a high-temperature resistant magnetic pump.
Further, an expansion medium tank is arranged on the liquid return pipe and is located at the upstream of the circulating pump.
Furthermore, a second thermometer is arranged on the liquid outlet pipe to detect the temperature of the output medium.
Furthermore, the coolant shield pump realizes flow control through a controller according to data of the first thermometer and the second thermometer, so that the temperature of the liquid outlet pipe reaches a target temperature.
Compared with the prior art, the utility model relates to a bucket pump circulation high low temperature liquid circulation accurate temperature control system's beneficial effect lies in: a low-pressure circulating barrel is added in the refrigerant circulating loop, and the working of the throttling device is controlled through the liquid level of the low-pressure circulating barrel, so that the stable liquid level in the low-pressure circulating barrel is ensured. The refrigerant shielding pump pumps the liquid refrigerant in the low-pressure circulating barrel into the evaporator, and the refrigerant absorbs heat and is vaporized in the evaporator and then returns to the low-pressure circulating barrel. The utility model can realize stable operation condition of the compressor, safe operation and long service life in the medium large temperature area range; refrigerant frequency conversion control, temperature control stability and energy conservation.
[ description of the drawings ]
Fig. 1 is a schematic control diagram according to an embodiment of the present invention;
the figures in the drawings represent:
1, an evaporator; 2, a liquid return pipe; 3, a liquid outlet pipe; 4, a circulating pump; 5, a heater; 6, a low-pressure circulating barrel; 7, a compressor; 8, a condenser; 9 a throttling device; 10 refrigerant canned motor pump; 11 a first thermometer; 12 a liquid level sensor; 13 expanding the medium box; 14 second thermometer.
[ detailed description ] embodiments
Example (b):
referring to fig. 1, the present embodiment is a precise temperature control system 100 for circulating high and low temperature liquid by a barrel pump, which includes an evaporator 1, a liquid return pipe 2 and a liquid outlet pipe 3 communicated with the evaporator 1, a circulating pump 4 and a heater 5 disposed on the liquid return pipe 2, a low pressure circulating barrel 6 forming a circulating loop with the evaporator 1, a refrigerant system forming a circulating loop with the low pressure circulating barrel 6, and a refrigerant shielding pump 10 disposed on a pipeline communicating the evaporator 1 and the low pressure circulating barrel 6, wherein the refrigerant system includes a compressor 7, a condenser 8, and a throttling device 9 disposed on a pipeline communicating the low pressure circulating barrel 6 and the condenser 8 in series.
The low-pressure circulating barrel 6 is provided with a first thermometer 11 and a liquid level sensor 12, and the throttling device 9 is controlled by a controller according to liquid level data of the liquid level sensor 12. The liquid level sensor 12 dynamically monitors the liquid level of liquid medium in the low-pressure circulating barrel 6, converts a liquid level signal into an analog quantity model, transmits the analog quantity model to the internal controller of the throttling device 9, the controller compares a received liquid level corresponding signal with an actually set liquid level value, controls the opening degree of the throttling device 9 in a PID control mode, and finally realizes that the set liquid level is close to the actually detected liquid level, and the deviation is within an allowable range.
The working of the liquid level control throttling device 9 of the low-pressure circulating barrel 6 is adopted in the embodiment, so that the stable liquid level in the low-pressure circulating barrel 6 is ensured. The throttle 9 is an electronic expansion valve.
The compressor 7 collects the temperature inside the low-pressure circulating barrel 6 through the controller according to the first thermometer 11 to realize control, when the saturation temperature in the low-pressure circulating barrel 6 reaches the set temperature, the compressor 7 is unloaded or stops working, and the low-pressure circulating barrel 6 has a certain volume, so that the buffering effect can be realized, frequent start and stop of the compressor 7 can be effectively avoided, and the service life of the compressor 7 is prolonged.
The refrigerant canned motor pump 10 is a variable frequency magnetic pump, can be controlled in a variable flow rate manner, and controls the medium temperature as a target object; the refrigerant shielding pump 10 pumps the liquid refrigerant in the low-pressure circulation barrel 6 into the evaporator 1, the refrigerant absorbs heat in the evaporator 1 and is vaporized, and then the refrigerant returns to the low-pressure circulation barrel 6. Through the arrangement of the low-pressure circulating barrel 6, the influence of the flow change of the refrigerant shielding pump 10 on the work of the compressor 7 can be greatly reduced, and the stability of the operation of a refrigerant system is guaranteed.
The evaporator 1, the liquid return pipe 2 and the liquid outlet pipe 3 form a medium circulating system, when the medium side works at high temperature, the impact of the hot medium on a refrigerant system is controlled through the low-flow operation of a refrigerant, and the compressor 7 can have relatively safe working conditions within a medium temperature range.
The circulating pump 4 adopts a high-temperature-resistant magnetic pump, and is not designed with a mechanical shaft seal, so that the leakage at high temperature is not easy to occur.
An expansion medium box 13 is arranged on the upper portion of the liquid return pipe 2 in the medium circulating system and located on the upper portion of the circulating pump 4, medium expansion caused by heat and contraction caused by cold are compensated, and pipeline deformation or damage is avoided.
A second thermometer 14 is arranged on the liquid outlet pipe 3 for detecting the temperature of the output medium. The coolant shield pump 10 controls the flow rate through the controller according to the data of the first thermometer 11 and the second thermometer 14, so that the temperature of the liquid outlet pipe 3 reaches the target temperature.
The precise temperature control system 100 for circulating high and low temperature liquid of the barrel pump controls the working frequency of the refrigerant shielding pump through the medium temperature to realize the set target temperature; the work of the throttling device is controlled by a liquid level sensor, so that the stable liquid level in the low-pressure circulating barrel is realized; the loading and unloading or the starting and stopping of the compressor are controlled by the temperature of the refrigerant in the low-pressure circulating barrel, so that the temperature in the circulating barrel is constant; the scheme can realize that the compressor operates stably, safely and has long service life in a medium large temperature area range; refrigerant frequency conversion control, temperature control stability and energy conservation.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (10)
1. The utility model provides a precision temperature control system of high cryogenic liquids circulation of barrel pump circulation which characterized in that: the low-pressure circulating device comprises an evaporator, a liquid return pipe and a liquid outlet pipe which are communicated with the evaporator, a circulating pump and a heater which are arranged on the liquid return pipe, a low-pressure circulating barrel which forms a circulating loop with the evaporator, a refrigerant system which forms a circulating loop with the low-pressure circulating barrel, and a refrigerant shielding pump which is arranged on a pipeline communicated with the low-pressure circulating barrel and is communicated with the evaporator, wherein the refrigerant system comprises a compressor, a condenser and a throttling device which are connected in series, the low-pressure circulating barrel is communicated with the condenser through the throttling device, and a first thermometer and a liquid level sensor are arranged on the low-pressure circulating barrel.
2. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 1, wherein: the throttling device is controlled by a controller according to the liquid level sensor to ensure the stability of the liquid level in the low-pressure circulating barrel.
3. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 1, wherein: and the compressor is controlled by a controller according to the first thermometer to ensure that the temperature of the liquid in the low-pressure circulating barrel is constant.
4. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 1, wherein: the throttling device adopts an electronic expansion valve.
5. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 3, wherein: and when the saturation temperature in the low-pressure circulating barrel reaches a set temperature, the compressor is unloaded or stops working.
6. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 1, wherein: the refrigerant canned motor pump is a variable frequency magnetic pump.
7. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 1, wherein: the circulating pump adopts a high-temperature resistant magnetic pump.
8. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 1, wherein: and an expansion medium tank is arranged on the liquid return pipe at the upstream of the circulating pump.
9. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 1, wherein: and a second thermometer is arranged on the liquid outlet pipe to detect the temperature of the output medium.
10. The precise temperature control system for circulating high and low temperature liquid by using the barrel pump as claimed in claim 9, wherein: and the refrigerant shielding pump realizes flow control through a controller according to the data of the first thermometer and the second thermometer, so that the temperature of the liquid outlet pipe reaches a target temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921098998.8U CN210463650U (en) | 2019-07-14 | 2019-07-14 | Precise temperature control system for circulating high-low temperature liquid of barrel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921098998.8U CN210463650U (en) | 2019-07-14 | 2019-07-14 | Precise temperature control system for circulating high-low temperature liquid of barrel pump |
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| CN210463650U true CN210463650U (en) | 2020-05-05 |
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| CN201921098998.8U Active CN210463650U (en) | 2019-07-14 | 2019-07-14 | Precise temperature control system for circulating high-low temperature liquid of barrel pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243103A (en) * | 2019-07-14 | 2019-09-17 | 苏州奥德机械有限公司 | A kind of barrel pump circulation high/low temperature liquid circulation Precise Temperature Control System |
| WO2022160340A1 (en) * | 2021-01-27 | 2022-08-04 | 苏州必信空调有限公司 | Air conditioning device having cold storage function |
-
2019
- 2019-07-14 CN CN201921098998.8U patent/CN210463650U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110243103A (en) * | 2019-07-14 | 2019-09-17 | 苏州奥德机械有限公司 | A kind of barrel pump circulation high/low temperature liquid circulation Precise Temperature Control System |
| WO2022160340A1 (en) * | 2021-01-27 | 2022-08-04 | 苏州必信空调有限公司 | Air conditioning device having cold storage function |
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Address after: Room 3 and 4, 228 Wulian Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Suzhou Aode high end equipment Co.,Ltd. Address before: 215300 rooms 3 and 4, 228 Wulian Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: SUZHOU AODE MACHINERY Co.,Ltd. |
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