CN217746450U - Frequency conversion freezing type dryer - Google Patents
Frequency conversion freezing type dryer Download PDFInfo
- Publication number
- CN217746450U CN217746450U CN202120941521.2U CN202120941521U CN217746450U CN 217746450 U CN217746450 U CN 217746450U CN 202120941521 U CN202120941521 U CN 202120941521U CN 217746450 U CN217746450 U CN 217746450U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- air
- frequency
- variable
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a variable-frequency freezing type dryer, which comprises an air system, a refrigerating system and a control system, and is characterized in that the air system comprises a heat exchanger, an evaporator and a steam-water separator which are sequentially connected with each other, wherein the heat exchanger is connected with an air inlet pipeline and an air outlet pipeline; the control system comprises a high-low pressure controller for controlling the starting or closing of the refrigerating system, and the detection ends of the high-low pressure controller are arranged at an inlet pipeline of the variable-frequency refrigerating compressor and an outlet pipeline of the condenser; the steam-water separator comprises a cylinder body; the air inlet and the air outlet are arranged on two sides of the cylinder body and are respectively positioned at the upper end and the lower end of the shell; the arc-shaped pipe is arranged in the cylinder body and is connected with the air inlet; and the baffle plate is arranged on the inner side wall of the cylinder and positioned above the arc-shaped pipe. The utility model discloses can promote the compressed air purity who obtains.
Description
Technical Field
The utility model relates to a technical field of desiccator, especially a technical field of frequency conversion refrigeration dryer.
Background
The freeze dryer is a machine which forces compressed air to pass through an evaporator for heat exchange and cooling according to a freeze dehumidification principle, so that gaseous water and oil in the compressed air are subjected to isobaric cooling, condensed into liquid water and oil, carry dust, and are discharged out of the machine through an automatic drainer, and clean compressed air is obtained. The freeze dryer used in the market at present basically has a fixed frequency compressor, high energy consumption and high noise. In addition, the existing freezing type dryer has a common dehumidification effect, and the purity of the obtained compressed air is low.
The freezing type dryer consists of an air system, a refrigerating system and a control system.
The Chinese patent with the patent number of '2017202686880' and the patent name of 'a high-efficiency energy-saving variable-frequency freezing dryer' is a utility model patent, although the dehumidification effect is increased to a certain extent, and the purity of the obtained compressed air is improved.
But the dehumidification effect of the variable-frequency freezing dryer and the obtained compressed air purity improvement are not optimized.
Therefore, it is particularly important to design a variable-frequency freezing dryer capable of further improving the dehumidification effect and the purity of the obtained compressed air.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem in the prior art, providing a frequency conversion refrigeration dryer, can promote the compressed air purity who obtains.
In order to achieve the purpose, the utility model provides a variable-frequency freezing dryer, which comprises an air system, a refrigerating system and a control system, and is characterized in that the air system comprises a heat exchanger, an evaporator and a steam-water separator which are sequentially connected with each other, and the heat exchanger is connected with an air inlet pipeline and an air outlet pipeline; the refrigeration system comprises a refrigeration pipeline which is connected with a refrigerant pipeline in the evaporator and forms a loop, and the refrigeration pipeline is sequentially provided with a vaporizer, a variable-frequency refrigeration compressor, an oil separator, an air-cooled condenser, a drying filter and a thermal expansion valve; the control system comprises a high-low pressure controller for controlling the starting or closing of the refrigerating system, and the detection ends of the high-low pressure controller are arranged at an inlet pipeline of the variable-frequency refrigerating compressor and an outlet pipeline of the condenser; the steam-water separator comprises a cylinder body; the air inlet and the air outlet are arranged on two sides of the cylinder body and are respectively positioned at the upper end and the lower end of the shell; the arc-shaped pipe is arranged in the cylinder body and is connected with the air inlet; and the baffle plate is arranged on the inner side wall of the cylinder and positioned above the arc-shaped pipe.
Preferably, the steam-water separator further comprises a filtering wire mesh device arranged in the cylinder body, and the filtering wire mesh device is located between the baffle plate and the air outlet.
The setting through filtering wire net device can let compressed air increase steam-water separation's process, can further promote steam-water separation's effect like this.
Preferably, the filtering screen device comprises an upper fixing piece and a lower fixing piece which are fixedly connected with the side wall of the cylinder, and a filtering screen fixed between the upper fixing piece and the lower fixing piece.
Through the setting of last firmware and lower firmware can be better fix filtering wire net for the structure is more firm.
Preferably, a plurality of baffle plates which are arranged in a crossed manner are arranged on the inner side wall of the cylinder body, and the baffle plates are arranged in a downward inclined manner; and a space is reserved between the baffle plate and the opening of the arc pipe.
The baffle plates are arranged in a crossed mode, so that the collision between the compressed air and the baffle plates can be improved, the separation is more effective, meanwhile, the downward inclination of the baffle plates can improve the collision between the compressed air and the baffle plates from bottom to top, and the steam-water separation is facilitated.
Preferably, a water outlet is vertically and downwards arranged at the bottom of the barrel, the water outlet is outwards connected with a water drainage pipe, and a water drainer is connected to the water drainage pipe; be close to the outlet top is provided with the anti-overflow cap, and this anti-overflow cap is umbelliform, and leaves the clearance that supplies the water droplet to pass through between anti-overflow cap edge and the outlet edge.
The arrangement of the anti-overflow cap can effectively prevent the liquid which is separated and flows into the bottom of the barrel from being carried by compressed air again and then fused for the second time.
Preferably, the control system further comprises a high-pressure controller arranged on an outlet pipeline of the air-cooled condenser.
The set pressure point of the high-pressure controller is slightly higher than that of the high-pressure controller and the high-pressure controller is set as a second protective measure, wherein when the high-pressure controller fails or cannot normally operate, the high-pressure controller can stop the variable-frequency refrigeration compressor to work, so that the whole refrigeration system is protected.
Preferably, the control system further comprises a temperature sensor arranged at the outlet of the evaporator, and a controller which is respectively electrically connected with the temperature sensor and the variable-frequency refrigeration compressor and controls the operating frequency of the variable-frequency refrigeration compressor;
the temperature sensor is used for detecting the temperature of the outlet of the evaporator, and the running frequency of the variable-frequency refrigeration compressor is adjusted by the controller through the analog quantity signal of the outlet temperature of the evaporator, so that the frequency of the variable-frequency refrigeration compressor is adjusted, equipment can adapt to various different working conditions, energy-saving running is achieved on the premise of ensuring the performance of the refrigeration dryer, and the refrigeration dryer is in the best rotating speed state.
Preferably, the refrigeration pipeline is further connected with a bypass valve through a pipeline, one end of the bypass valve is arranged on a connecting pipeline between the oil separator and the air-cooled condenser through a pipeline, and the other end of the bypass valve is connected to a connecting pipeline between the thermostatic expansion valve and the evaporator through a pipeline.
The arrangement of the bypass valve can allow some refrigerants to bypass the condenser, so that the problem of supercooling can be avoided, and the refrigeration system can be well protected.
Preferably, an air pressure gauge is arranged at the air outlet, a low-pressure gauge is arranged at the inlet pipeline of the variable-frequency refrigeration compressor, and a high-pressure gauge is arranged at the outlet pipeline of the condenser.
The setting of the air pressure gauge, the low pressure gauge and the high pressure gauge can enable a user to pay attention to the overall operation condition of the dryer in real time.
Preferably, an air-cooled precooler is connected to the air inlet pipeline.
The utility model has the advantages that:
the frequency of power supply is increased by using the variable-frequency refrigeration compressor, so that the rotating speed of the compressor is increased, and the refrigerating capacity is correspondingly increased; the temperature control precision is higher, and the operation load of the equipment can be adjusted according to the working condition; the compressor runs more stably, the starting current is lower, and the service life of the compressor is prolonged; reactive loss is reduced, and the active power of the power grid is increased; because the frequency conversion compressor runs in balance, the vibration is reduced, and the noise is reduced; the voltage requirement is low, and the adaptability of the variable frequency compressor to the voltage is high; the whole system has good dehumidification effect, high oil-water recovery rate and high purity of the obtained compressed air.
The control system, wherein high low pressure controller among the control system can guarantee when refrigerating system is too high or low excessively in pressure, the broken circuit makes the compressor shut down and protects the compressor not to rotate under low pressure or high pressure, improves the economic nature of system operation, is guaranteeing under refrigerating system's stability's the condition simultaneously, and then has guaranteed that the dehumidification effect of whole set of system is good, improves whole compressed air's purity.
Catch water, wherein the utility model discloses a catch water can be better separate vapour liquid, separate effectually, wherein the vapour gets into under the effect of arc pipe after the barrel through the air inlet, and the settlement of arc pipe can let compressed air get into the barrel with a miscut angle after passing through the arc pipe, is favorable to the formation of compressed air cyclone in the barrel like this, and wherein the structure of barrel internal for smooth surface and barrel also can help the formation of whirlwind. The formation of whirlwind can improve catch water, and the setting of baffling board can further promote catch water's effect simultaneously, can more effectually dehumidify compressed air through above-mentioned catch water, and then improves compressed air's purity.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the steam-water separator of the present invention.
In the figure: 1-air inlet pipeline, 2-air-cooled precooler, 3-heat exchanger, 4-evaporator, 5-vapor-liquid separator, 6-air outlet pipeline, 7-vaporizer, 8-frequency conversion refrigeration compressor, 9-oil separator, 10-air-cooled condenser, 11-drying filter, 12-thermal expansion valve, 13-bypass valve, 14-high-low pressure controller, 15-high pressure controller, 16-air pressure gauge, 17-low pressure gauge, 18-high pressure gauge, 51-cylinder, 52-air inlet, 53-air outlet, 54-water outlet, 55-arc pipe, 56-baffle plate, 57-filtering screen device, 541-drainer, 571-upper fixing piece, 572-filtering screen wire and 573-lower fixing piece.
Detailed Description
Referring to fig. 1 and 2, the present invention includes an air system, a refrigeration system, and a control system.
The air system comprises an air inlet pipeline 1, an air-cooled precooler 2, a heat exchanger 3, an evaporator 4, a vapor-liquid separator 5 and an air pipeline outlet, wherein compressed air enters the air-cooled precooler 2 for precooling through the air inlet pipeline 1 and enters the heat exchanger 3 after precooling, the heat exchanger 3 is a component for exchanging heat between air and air, and the heat exchanger 3 mainly functions to recover cold energy carried by the compressed air cooled by the evaporator 4 and cool the compressed air with high temperature carrying a large amount of water vapor by using the cold energy, so that the heat load of the refrigerating system of the cold dryer is lightened, and the purpose of saving energy is achieved; then the refrigerant enters an evaporator 4 to exchange heat with the refrigerant, and the refrigerant absorbs the heat of the compressed air in the evaporator to realize the purpose of dehydration and drying; and finally, the gas-liquid separator 5 is used for separating liquid water from the cooled compressed air, so that secondary evaporation of water is prevented, the dew point quality of part of finished gas of the refrigeration dryer is ensured, and the finished gas enters the heat exchanger 3 after passing through the gas-liquid separator 5 to exchange heat and is discharged from the air outlet pipeline 6.
The gas-liquid separator 5 comprises a cylinder body 51, a water outlet 54 vertically arranged at the bottom of the cylinder body 51, a gas inlet 52 arranged at the lower end of the side part of the cylinder body 51 and a gas outlet 53 arranged at the upper end of the side part of the cylinder body 51, wherein the gas inlet 52 and the gas outlet 53 are mutually corresponding to the left side and the right side of the cylinder body 51; an arc-shaped pipe 55 which is bent upwards is further arranged inside the cylinder body 51, the arc-shaped pipe 55 is connected with the air inlet 52, a baffle plate 56 is arranged above the arc-shaped pipe 55, a space is arranged between the baffle plate 56 and the arc-shaped pipe 55, and compressed air can form cyclone separation in the space; above the baffle 56 is a filtering screen arrangement 57.
Wherein a plurality of baffle plates 56 are fixed on the inner side wall of the cylinder body 51, the baffle plates 56 are arranged on the side wall of the cylinder body 51 in a crossed manner, and the baffle plates 56 are all arranged in a downward inclined manner, and the inclined angle is 30-45 degrees.
The filtering wire net device 57 includes an upper fixing member 571 and a lower fixing member 573 fixedly connected to the sidewall of the cylinder 51, and a filtering wire 572 fixed between the upper fixing member 571 and the lower fixing member 573.
When the vapor-liquid separator 5 is in operation, compressed air enters the arc-shaped pipe 55 through the air inlet 52, then enters the cylinder body 51 with the assistance of the arc-shaped pipe 55, whirlwind is formed in the cylinder body 51, liquid is separated, the whirlwind separation is mainly performed in the space between the baffle plate 56 and the arc-shaped pipe 55, when the whirlwind upwards enters the area of the baffle plate 56, the baffle plate 56 is in contact with the whirlwind to form collision separation, the liquid is separated, then the liquid upwards enters the filtering wire mesh device 57, vapor-liquid separation is performed on the compressed air through the filtering wire mesh, and finally the compressed air passing through the filtering wire mesh device 57 is discharged from the air outlet 53.
An anti-overflow cap is further disposed in the vapor-liquid separator 5, the anti-overflow cap is fixed above the water outlet 54 and is disposed close to the water outlet 54, the anti-overflow cap is umbrella-shaped, and a gap for water droplets to pass through is left between the edge of the anti-overflow cap and the edge of the water outlet 54. A drain 541 is connected to the drain 54 for draining the liquid separated from the cylinder.
The refrigerating system consists of a variable-frequency refrigerating compressor 8, a gasifier, an oil separator 9, a condenser, a drying filter 11, an expansion valve and a hot gas bypass valve 13. The variable frequency refrigeration compressor 8 sucks the low-pressure refrigerant in the evaporator 4 into the compressor cylinder, wherein the refrigerant is gasified through the vaporizer 7 before being sucked into the compressor cylinder, and the compressor is placed to be subjected to liquid impact. The refrigerant vapor is compressed, and the pressure and the temperature are simultaneously increased; the high-pressure and high-temperature refrigerant vapor is pressed to the condenser through the oil separator 9, and the oil separator 9 separates the lubricating oil in the high-pressure vapor discharged from the inverter refrigeration compressor 8. In the condenser, the refrigerant vapor with higher temperature exchanges heat with cooling water or air with lower temperature, the heat of the refrigerant is carried away by the water or air and condensed, and the refrigerant vapor becomes liquid. The part of liquid is sent to a thermostatic expansion valve 12, is throttled into low-temperature and low-pressure liquid through a capillary tube and enters an evaporator 4; the low-temperature and low-pressure refrigerant liquid in the evaporator 4 absorbs the heat of the compressed air to be vaporized, and the compressed air is condensed into a large amount of liquid water after being cooled; the refrigerant vapor in the evaporator 4 is sucked by the compressor, so that the refrigerant undergoes four processes of compression, condensation, throttling and evaporation in the system, thereby completing a cycle. A hot gas bypass valve 13 is also installed between the oil separator 9 and the evaporator 4, the hot gas bypass valve 13 being used to prevent short circuit circulation of the compressor, to prevent the compressor from operating at very low suction pressures, and to prevent the evaporator 4 from freezing at low loads.
The control system comprises a high-low pressure controller 14 used for controlling the starting or closing of the refrigerating system, the detection end of the high-low pressure controller 14 is arranged at the inlet pipeline of the variable-frequency refrigerating compressor 8 and the outlet pipeline of the condenser, a high-pressure controller 15 is further arranged at the outlet pipeline of the condenser, the high-pressure controller 15 and the high-low pressure controller 14 use the same pressure measuring end on the outlet pipeline of the condenser, and meanwhile, the high-pressure controller 15 and the high-low pressure controller are connected through the same circuit.
The control system also comprises a controller and a temperature sensor (not shown in the figure), wherein the temperature sensor is used for detecting the temperature of the outlet of the evaporator 4, and the operating frequency of the variable-frequency refrigeration compressor 8 is adjusted by the controller through the analog quantity signal of the outlet temperature of the evaporator 4, so that the frequency of the variable-frequency refrigeration compressor is adjusted, the equipment can adapt to various different working conditions, the energy-saving operation is realized on the premise of ensuring the performance of the refrigeration dryer, and the equipment is in the optimal rotating speed state.
The high-low pressure controller 14 in the control system can ensure that when the pressure of the refrigeration system is too high or too low, the circuit is disconnected, so that the compressor is stopped to protect the compressor from running under the condition of too low pressure or high pressure, the economical efficiency of the system operation is improved, and meanwhile, under the condition of ensuring the stability of the refrigeration system, the dehumidification effect of the whole system is ensured to be good, and the purity of the whole compressed air is improved.
The set pressure point of the high pressure controller 15 is slightly higher than the pressure point of the high and low pressure controllers 14, the setting of the high pressure controller 15 is used as a second protective measure, wherein when the high and low pressure controllers 14 are in failure or can not normally operate, the high pressure controller 15 can stop the operation of the variable frequency refrigeration compressor 8, so as to protect the whole refrigeration system.
The refrigeration pipeline is also connected with a bypass valve 13 through a pipeline, one end of the bypass valve 13 is arranged on a connecting pipeline between the oil separator 9 and the air-cooled condenser 10 through a pipeline, and the other end of the bypass valve 13 is connected on a connecting pipeline between the thermostatic expansion valve 12 and the evaporator 4 through a pipeline.
An air pressure gauge 16 is arranged at the air outlet, a low pressure gauge 17 is arranged at the inlet pipeline of the variable-frequency refrigeration compressor 8, and a high pressure gauge 18 is arranged at the outlet pipeline of the condenser.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any is right the utility model discloses scheme after simply changing all belongs to the protection scope of the utility model.
Claims (10)
1. A frequency conversion freezing type dryer comprises an air system, a refrigerating system and a control system, and is characterized in that the air system comprises a heat exchanger, an evaporator and a steam-water separator which are sequentially connected with one another, and the heat exchanger is connected with an air inlet pipeline and an air outlet pipeline;
the refrigeration system comprises a refrigeration pipeline which is connected with a refrigerant pipeline in the evaporator and forms a loop, and the refrigeration pipeline is sequentially provided with a vaporizer, a variable-frequency refrigeration compressor, an oil separator, an air-cooled condenser, a drying filter and a thermal expansion valve;
the control system comprises a high-low pressure controller for controlling the starting or closing of the refrigerating system, and the detection ends of the high-low pressure controller are arranged at an inlet pipeline of the variable-frequency refrigerating compressor and an outlet pipeline of the condenser;
the steam-water separator comprises a cylinder body;
the air inlet and the air outlet are arranged on two sides of the cylinder body and are respectively positioned at the upper end and the lower end of the shell;
the arc-shaped pipe is arranged in the cylinder body and is connected with the air inlet;
and the baffle plate is arranged on the inner side wall of the cylinder and positioned above the arc-shaped pipe.
2. The variable frequency freeze dryer of claim 1, wherein: the steam-water separator also comprises a filtering wire mesh device arranged in the cylinder body, and the filtering wire mesh device is positioned between the baffle plate and the air outlet.
3. The variable frequency freeze dryer of claim 2, wherein: the filtering screen device comprises an upper fixing piece and a lower fixing piece which are fixedly connected with the side wall of the cylinder body, and a filtering screen fixed between the upper fixing piece and the lower fixing piece.
4. The variable frequency freeze-dryer of claim 1, wherein: a plurality of baffle plates which are arranged in a crossed manner are arranged on the inner side wall of the cylinder body, and the baffle plates are arranged in a downward inclined manner;
and a space is reserved between the baffle plate and the opening of the arc pipe.
5. The variable frequency freeze dryer of claim 4, wherein: a water outlet is vertically and downwards arranged at the bottom of the barrel body, the water outlet is outwards connected with a water drainage pipe, and a water drainer is connected to the water drainage pipe;
an anti-overflow cap is arranged above the water outlet and is umbrella-shaped, and a gap for water drops to pass through is reserved between the edge of the anti-overflow cap and the edge of the water outlet.
6. The variable frequency freeze-dryer of claim 1, wherein: the control system also comprises a high-pressure controller arranged on an outlet pipeline of the air-cooled condenser.
7. The variable frequency freeze dryer of claim 1, wherein: the control system further comprises a temperature sensor arranged at the outlet of the evaporator and a controller which is respectively electrically connected with the temperature sensor and the variable-frequency refrigeration compressor and controls the running frequency of the variable-frequency refrigeration compressor.
8. The variable frequency freeze dryer of claim 1, wherein: the refrigeration pipeline is also connected with a bypass valve through a pipeline, one end of the bypass valve is arranged on a connecting pipeline between the oil separator and the air-cooled condenser through a pipeline, and the other end of the bypass valve is connected on a connecting pipeline between the thermostatic expansion valve and the evaporator through a pipeline.
9. The variable frequency freeze dryer of claim 1, wherein: the air outlet is provided with an air pressure gauge, the inlet pipeline of the variable-frequency refrigeration compressor is provided with a low pressure gauge, and the outlet pipeline of the condenser is provided with a high pressure gauge.
10. The variable frequency freeze dryer of claim 1, wherein: and the air inlet pipeline is connected with an air-cooled precooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120941521.2U CN217746450U (en) | 2021-04-30 | 2021-04-30 | Frequency conversion freezing type dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120941521.2U CN217746450U (en) | 2021-04-30 | 2021-04-30 | Frequency conversion freezing type dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217746450U true CN217746450U (en) | 2022-11-08 |
Family
ID=83870007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120941521.2U Active CN217746450U (en) | 2021-04-30 | 2021-04-30 | Frequency conversion freezing type dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217746450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116832471A (en) * | 2023-06-21 | 2023-10-03 | 河北爱节能源科技有限公司 | Organic silicon production Hcl edulcoration device |
-
2021
- 2021-04-30 CN CN202120941521.2U patent/CN217746450U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116832471A (en) * | 2023-06-21 | 2023-10-03 | 河北爱节能源科技有限公司 | Organic silicon production Hcl edulcoration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103604241B (en) | Air-conditioner and control method thereof | |
| KR101138699B1 (en) | Air conditioner of single body type having condensation water evaporation device | |
| CN217746450U (en) | Frequency conversion freezing type dryer | |
| CN100436992C (en) | A freezing dryer for compressed air | |
| CN208832629U (en) | A kind of low-temperature cold water unit | |
| CN206577568U (en) | A kind of high-efficiency and energy-saving type frequency conversion freezing type drier | |
| CN206257825U (en) | Microcomputer controls thermal siphon economizer screw ethylene glycol unit | |
| CN217685543U (en) | Compressed air freezing and dehumidifying energy-saving device with air-cooled condenser | |
| CN217929283U (en) | Lithium bromide absorption type freezing dryer utilizing compression heat | |
| CN215842039U (en) | Low-temperature vacuum oil filter | |
| CN205760508U (en) | A kind of freezing type drier | |
| CN204816169U (en) | Freezing formula compressed air drying ware | |
| CN214039472U (en) | Water-cooled heat pump dehumidification drying unit | |
| CN211746600U (en) | Evaporation cooling type grain cooling machine | |
| CN210674728U (en) | Freezing type drying machine for air compression station | |
| CN106705470B (en) | Flooded refrigerating unit | |
| CN207230984U (en) | Energy-saving type air conditioner refrigeration system | |
| CN111895689A (en) | Refrigerating system supercooling degree device for improving wide temperature zone application | |
| CN217855403U (en) | Parallel freezing type dryer | |
| CN204220003U (en) | Split type anti-explosion type cooling driers | |
| CN216407166U (en) | Compact integrated compressed air station | |
| KR100581094B1 (en) | A heating and cooling system for prevent overload of a compressor | |
| CN218936714U (en) | Condensed water recycling system of closed-loop dehumidification heat pump dryer | |
| CN213335063U (en) | Refrigerating system and non-condensable gas separation device thereof | |
| CN110141941A (en) | A kind of freezing type drier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |