CN213222215U - Automatic high low temperature low pressure test box of dehumidification - Google Patents
Automatic high low temperature low pressure test box of dehumidification Download PDFInfo
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- CN213222215U CN213222215U CN202021704234.1U CN202021704234U CN213222215U CN 213222215 U CN213222215 U CN 213222215U CN 202021704234 U CN202021704234 U CN 202021704234U CN 213222215 U CN213222215 U CN 213222215U
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- heat exchanger
- plate heat
- dehumidification
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Abstract
The utility model discloses an automatic high low temperature low pressure test box of dehumidification, be provided with the vacuum tube on experimental box, the vacuum tube links to each other with plate heat exchanger's hot side import, plate heat exchanger's cold side export links to each other with the vacuum pump, plate heat exchanger's cold side import links to each other with the refrigerant branch pipe of refrigerating unit's refrigerant outlet pipeline branch, be provided with refrigeration solenoid valve and thermal expansion valve on this refrigerant branch pipe, plate heat exchanger's hot side outlet pipeline links to each other with refrigerating unit's refrigerant return circuit pipeline, be provided with the evaporating pressure governing valve on plate heat exchanger's hot side outlet pipeline, plate heat exchanger's bottom outlet links to each other with the sump pit. Adopt the refrigeration condensation mode dehumidification, can recycle for a long time, need not use consumptive materials such as dry filter core, reduce treatment cost. Can realize full automatic control without replacing the drying filter element regularly. Can realize full automatic control and can avoid causing the vacuum pump to damage because of the user forgets to change dry filter core.
Description
Technical Field
The utility model relates to an automatic high low temperature low pressure test case of dehumidification belongs to the test device field.
Background
The high-low temperature environment test equipment is mainly used for simulating high-temperature or low-temperature extreme climate in natural environment and evaluating the performance of products under extreme conditions.
When the low-pressure test chamber is used for carrying out a damp-heat test under low pressure, the working chamber needs to be kept at low pressure, the vacuum pump needs to be operated all the time, the working chamber is vacuumized, but under the damp-heat condition, the air humidity in the working chamber is high, the moisture content of air pumped out by the vacuum pump is high, the moisture enters the lubricating oil of the vacuum pump, the lubricating effect is reduced, and the vacuum pump is easy to damage after long-term operation. In the past, a drying filter is additionally arranged at the front end of a vacuum pump, but a drying filter element needs to be frequently replaced for the drying filter, and a customer cannot know the replacement time period well, so that the use of the customer is inconvenient. Therefore, a new drying method is urgently needed to replace the former drying method.
SUMMERY OF THE UTILITY MODEL
To the technical problem, an object of the utility model is to provide an automatic high low temperature low pressure test box of dehumidification can realize the automatic control dehumidification, need not to change dry filter core, reduces the damage of vacuum pump.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides an automatic high low temperature low pressure test box of dehumidification, includes experimental box and refrigerating unit be provided with vacuum tube on the experimental box, its characterized in that: the vacuum tube is connected with a hot side inlet of the plate heat exchanger, a cold side outlet of the plate heat exchanger is connected with the vacuum pump, the cold side inlet of the plate heat exchanger is connected with a refrigerant branch pipe which is divided from a refrigerant outlet pipeline of the refrigerating unit, a refrigerating electromagnetic valve and a thermal expansion valve are arranged on the refrigerant branch pipe, a hot side outlet pipeline of the plate heat exchanger is connected with a refrigerant loop pipeline of the refrigerating unit, an evaporation pressure regulating valve is arranged on a hot side outlet pipeline of the plate heat exchanger, and a bottom water outlet of the plate heat exchanger is connected with the water collecting barrel.
By adopting the scheme, the original refrigeration system of the low-pressure test box is utilized to divide a refrigeration bypass, the dehumidification is carried out in a low-temperature condensation mode, the dry air after condensation and dehumidification treatment is carried out on the wet air and then enters the vacuum pump, and the water after dehumidification is collected through the water collecting barrel. The device can realize automatic control treatment without replacing consumable (drying filter element) in the using process.
In the scheme, the method comprises the following steps: the bottom of the water collecting barrel is provided with a drain pipe, and a drain pump and a drain valve are arranged on the drain pipe.
In the scheme, the method comprises the following steps: the drain valve is an automatic drain electromagnetic valve. The condensed water is discharged out of the system through a water discharge electromagnetic valve at regular time.
Compared with the prior art, the utility model discloses following beneficial effect has: adopt the refrigeration condensation mode dehumidification, can recycle for a long time, need not use consumptive materials such as dry filter core, reduce treatment cost. Can realize full automatic control without replacing the drying filter element regularly. Can realize full automatic control and can avoid causing the vacuum pump to damage because of the user forgets to change dry filter core, adopt original refrigerating unit, equipment drops into for a short time.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
embodiment 1, as shown in fig. 1, the utility model discloses an automatic high low temperature low pressure test box of dehumidification comprises test box 1, refrigerating unit 2, evacuation pipe 3, plate heat exchanger 4, vacuum pump 5, refrigeration solenoid valve 6, thermal expansion valve 7, evaporating pressure regulating valve 8, water-collecting bucket 9, drain pump 10 and drain valve 11.
The test box is in the prior art, and is internally provided with an evaporator, a heater, a humidifier and the like. The refrigerating unit 2 is also a component of a high-low temperature low-pressure test chamber in the prior art, and is not described herein. Be provided with evacuation pipe 3 on high low temperature low pressure test box's the test box 1, evacuation pipe 3 links to each other with plate heat exchanger 4's hot side import, plate heat exchanger 4's cold side export links to each other with vacuum pump 5, plate heat exchanger 4's cold side import links to each other with the refrigerant branch pipe of refrigerating unit 2's refrigerant outlet pipeline branch, be provided with refrigeration solenoid valve 6 and thermal expansion valve 7 on this refrigerant branch pipe, plate heat exchanger 4's hot side outlet pipeline links to each other with refrigerating unit 2's refrigerant return circuit pipeline, be provided with evaporating pressure governing valve 8 on plate heat exchanger 4's hot side outlet pipeline, plate heat exchanger 4's bottom outlet links to each other with water catch bowl 9. The bottom of the water collecting tub 9 is provided with a drain pipe, and a drain pump 10 and a drain valve 11 are provided on the drain pipe. The drain valve 11 is an automatic drain electromagnetic valve, and can realize automatic control.
The present invention is not limited to the above embodiments, and those skilled in the art can understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (3)
1. The utility model provides an automatic high low temperature low pressure test box of dehumidification, includes experimental box and refrigerating unit be provided with vacuum tube on the experimental box, its characterized in that: the vacuum tube is connected with a hot side inlet of the plate heat exchanger, a cold side outlet of the plate heat exchanger is connected with the vacuum pump, the cold side inlet of the plate heat exchanger is connected with a refrigerant branch pipe which is divided from a refrigerant outlet pipeline of the refrigerating unit, a refrigerating electromagnetic valve and a thermal expansion valve are arranged on the refrigerant branch pipe, a hot side outlet pipeline of the plate heat exchanger is connected with a refrigerant loop pipeline of the refrigerating unit, an evaporation pressure regulating valve is arranged on a hot side outlet pipeline of the plate heat exchanger, and a bottom water outlet of the plate heat exchanger is connected with the water collecting barrel.
2. The automatic dehumidification high-low temperature low-pressure test chamber according to claim 1, wherein: the bottom of the water collecting barrel is provided with a drain pipe, and a drain pump and a drain valve are arranged on the drain pipe.
3. The automatic dehumidification high and low temperature and low pressure test chamber according to claim 2, wherein: the drain valve is an automatic drain electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021704234.1U CN213222215U (en) | 2020-08-14 | 2020-08-14 | Automatic high low temperature low pressure test box of dehumidification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021704234.1U CN213222215U (en) | 2020-08-14 | 2020-08-14 | Automatic high low temperature low pressure test box of dehumidification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213222215U true CN213222215U (en) | 2021-05-18 |
Family
ID=75895227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021704234.1U Active CN213222215U (en) | 2020-08-14 | 2020-08-14 | Automatic high low temperature low pressure test box of dehumidification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213222215U (en) |
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2020
- 2020-08-14 CN CN202021704234.1U patent/CN213222215U/en active Active
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