CN217685543U - Compressed air freezing and dehumidifying energy-saving device with air-cooled condenser - Google Patents
Compressed air freezing and dehumidifying energy-saving device with air-cooled condenser Download PDFInfo
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- CN217685543U CN217685543U CN202221537855.4U CN202221537855U CN217685543U CN 217685543 U CN217685543 U CN 217685543U CN 202221537855 U CN202221537855 U CN 202221537855U CN 217685543 U CN217685543 U CN 217685543U
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Abstract
The utility model discloses a take air-cooled condenser's frozen dehumidification economizer of compressed air, compressor unit, air-cooled condenser, filter and electron that evaporimeter, vapour and liquid separator, rated dehumidification power including refrigerant tube coupling are P expandAn expansion valve and a compressed air precooler with a heat exchange air pipe, wherein a compressed air inlet of the compressed air precooler is communicated with an air inlet of the evaporator through the heat exchange air pipe, an air outlet of the evaporator is communicated with a compressed air outlet of the compressed air precooler, and the compressor unit consists of
The compressors I, II and III are connected in parallel, a heat exchange tube bundle pipe of the air-cooled condenser and the outlet of each compressor are respectively connected with a one-way valve, the high-pressure sensor, the low-pressure sensor, the touch screen and the temperature and humidity sensor are respectively in two-way communication with the PLC, and the compressor unit, the cooling fan and the electronic expansion valve are controlled by the PLC. The device starts the whole machine to adjust the whole machine from 100% to 75%, 50% and 25% moisture removal capacity in four grades according to the mass enthalpy value of water vapor in current wet air.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a take air-cooled condenser's frozen dehumidification economizer of compressed air belongs to the frozen dehumidification technical field of compressed air.
[ background of the invention ]
In order to realize industrial intelligence, a compressed air source is required to be dried in the automatic production process of a motor, the dehumidification power of a conventional compressed air refrigeration dehumidifier is fixed, the temperature and the humidity in the wet air are different due to different climates in four seasons, the actually required dehumidification power is different, the conventional refrigeration dehumidifier cannot adjust the refrigeration energy consumption power and can only adjust the refrigeration energy consumption power by virtue of a high-pressure bypass valve in a refrigeration system, the high-pressure bypass valve can only ensure that the suction pressure is not reduced below a preset pressure, the refrigeration power consumption can not be reduced, excessive liquid return of a refrigerant in the refrigeration system can be caused, the power consumption load of a compressor is increased, and excessive liquid refrigerant is stored in a crankcase to influence refrigeration oil lubrication and damage the compressor. For example, the wet air temperature in summer is 37 ℃, the relative humidity is 85RH, the enthalpy value is 126.16kj/kg, the wet air temperature in spring and autumn is 22 ℃, the relative humidity is 85RH, the enthalpy value is 58.08kj/kg, for example, the wet air temperature in winter is 8 ℃, the relative humidity is 85RH, and the enthalpy value is 22.29kj/kg.
[ Utility model ] content
The utility model provides a take air-cooled condenser's frozen economizer that dehumidifies of compressed air to the not enough of above-mentioned prior art.
To this end, the utility model provides the following solution:
the utility model provides a take frozen dehumidification economizer of compressed air of forced air cooling condenser, includes evaporator, vapour and liquid separator, the rated freezing dehumidification power of passing through refrigerant pipe connection and is P compressor unit, forced air cooling condenser, filter and electronic expansion valve, and its improvement point lies in: the system also comprises a PLC (programmable logic controller), a touch screen, a temperature and humidity sensor for measuring the temperature and humidity of the ambient air in real time and a compressed air precooler, wherein a compressed air input port is communicated with an air inlet of the evaporator through a heat exchange air pipe arranged in the compressed air precooler, an air outlet of the evaporator is communicated with a compressed air output port of the compressed air precooler, and the compressor unit respectively has rated power of
The air-cooled condenser consists of a condenser shell, heat exchange tube bundles positioned in the condenser shell, heat exchange fins and at least one cooling fan, wherein a one-way valve is respectively connected between an input port of each heat exchange tube bundle and an outlet of each compressor, and an output port of each heat exchange tube bundle is connected with a filter; the touch screen, the temperature and humidity sensor, the high-pressure sensor and the low-pressure sensor are in two-way communication with the PLC respectively, and the compressor unit, the cooling fan and the electronic expansion valve are controlled by the PLC.
The compressed air precooler comprises a precooler tube shell and a heat exchange air tube, wherein the precooler tube shell consists of a main cavity, and an air inlet cavity and an air outlet cavity which are respectively arranged at two sides of the main cavity in an isolated manner; the evaporator comprises an evaporator tube shell, and heat exchange tube bundle tubes, heat exchange fins and compressed air guide vanes which are positioned in the evaporator tube shell, wherein the compressed air guide vanes are staggered up and down and are positioned in the evaporator tube shell at intervals; the bottom wall of the air outlet cavity is communicated with the evaporator tube shell, and the top wall of the evaporator tube shell is communicated with the bottom wall of the main cavity body; the heat exchange tube bundle tube and the heat exchange fin of the air-cooled condenser are an integral piece; the outlet of the electronic expansion valve is connected with the inlet of the heat exchange tube bundle tube of the evaporator.
The high-pressure sensor is arranged on a refrigerant pipe section which is jointly connected with a heat exchange pipe bundle pipe of the air-cooled condenser by three one-way valves.
The low pressure sensor is arranged on a gas return pipe section of a refrigerant pipeline which is formed by connecting inlets of the three compressors with an outlet of the gas-liquid separator.
The utility model has the advantages of as follows and technological effect:
the device adopts a parallel combined compressor unit, the unit adopts three compressors with different rated powers to form a complete machine, temperature and temperature are collected in real time through a temperature and humidity sensor according to the mass enthalpy value of water vapor in wet air before being input into an air compressor under the current environmental climate condition, and collected temperature and humidity data signals are sent to a PLC controller in real time. And determining the corresponding refrigeration and dehumidification power of the compressor unit according to the real water vapor mass enthalpy value (total heat contained in the humid air) of the ambient air, namely the refrigeration and dehumidification heat load power corresponding to different temperatures and humidity of the humid air is different. The parallel combined compressor unit is controlled by starting and setting the PLC, the control instruction of the PLC has the capacity of starting the number of actually required compressors and the actually required refrigeration dehumidification (quantity) power in real time, namely, the whole machine is automatically started to be adjusted from 100% to 75%, 50% and 25% to four grades of dehumidification capacity, the dehumidification is more energy-saving, the running cost is reduced, and the actually required dehumidification effect is ensured.
[ description of the drawings ]
FIG. 1 is a schematic structural view of the compressed air refrigerating and dehumidifying energy-saving device of the present invention;
fig. 2 is the circuit block diagram of the PLC controller of the present invention, including the touch screen, the temperature and humidity sensor, the high and low pressure sensors, and the compressor set, the cooling fan, and the electronic expansion valve.
[ detailed description ] A
Referring to FIGS. 1 and 2, a compressor with an air-cooled condenserThe air freezing dehumidification energy-saving device comprises an evaporator 2, a gas-liquid separator 3, a compressor set 4 with rated freezing dehumidification power P, an air-cooled condenser 6, a filter 7 and an electronic expansion valve 8 which are circularly connected through a refrigerant pipeline, and the improvement points are that: the device also comprises a PLC (programmable logic controller) 9, a touch screen TP, a temperature and humidity sensor SN for measuring the temperature and humidity of the ambient air in real time and a compressed air precooler 1, wherein a compressed air input port 11-1 is communicated with an air inlet of the evaporator 2 through a heat exchange air pipe 14 arranged in the compressed air precooler 1, an air outlet of the evaporator 2 is communicated with a compressed air output port 13-1 of the compressed air precooler 1, and the compressor unit 4 is respectively provided with a rated power
The compressor I41,
Compressor II 42 and
the air-cooled condenser 6 consists of a condenser tube shell 60, a heat exchange tube bundle tube 61 positioned in the condenser tube shell 60, heat exchange fins 62 and at least one cooling fan 63, wherein a one-way valve is respectively connected between the input port of the heat exchange tube bundle tube 61 and the outlet of each compressor, and the output port of the heat exchange tube bundle tube is connected with a filter; the touch screen TP, the temperature and humidity sensor SN, the high-pressure sensor P1 and the low-pressure sensor P2 are in two-way communication with the PLC 9 respectively, and the compressor unit 4, the cooling fan 63 and the electronic expansion valve 8 are controlled by the PLC 9.
The compressed air precooler 1 comprises a precooler tube shell 10 and a heat exchange air tube 14, wherein the precooler tube shell 10 consists of a main cavity 12, an air inlet cavity 11 and an air outlet cavity 13 which are respectively arranged at two sides of the main cavity 12 in an isolated manner, a compressed air inlet 11-1 is arranged at the upper end of the air inlet cavity 11, and a compressed air outlet 13-1 is arranged on the upper wall of the main cavity 12, wherein the heat exchange air tube 14 is formed by arranging a plurality of heat exchange air discharge tubes at intervals, and two ends of each heat exchange air discharge tube in the main cavity 12 are respectively communicated with the air inlet cavity 11 and the air outlet cavity 13; the evaporator 2 comprises an evaporator tube shell 20, and a heat exchange tube bundle tube 21, a heat exchange fin 22 and a compressed air deflector 23 which are positioned in the evaporator tube shell 20, wherein the compressed air deflector 23 is staggered up and down and is positioned in the evaporator tube shell 20 at intervals; the bottom wall of the air outlet cavity 13 is communicated with an evaporator tube shell 20, and the top wall of the evaporator tube shell 20 is communicated with the bottom wall of the main cavity 12; the heat exchange tube bundle 61 and the heat exchange fin 62 of the air-cooled condenser 6 are an integral piece; the outlet of the electronic expansion valve 8 is connected with the inlet of the heat exchange tube bundle tube 21 of the evaporator 2.
The high-pressure sensor P1 is provided on a refrigerant tube section connected in common to the heat exchange tube bundle tube 61 by the check valve 51, the check valve 52 and the check valve 53.
The low pressure sensor P2 is arranged on a gas return pipe section of a refrigerant pipeline which is connected with the outlet of the gas-liquid separator 3 by the inlets of the compressor I41, the compressor II 42 and the compressor III 42'.
The evaporator 2 adopts a shell-tube finned tube bundle tube heat exchange heat exchanger, a certain number of compressed air guide vanes 23 are also arranged in the evaporator, low-temperature refrigerant flows in a heat exchange tube bundle tube 21, the refrigerant comes from a refrigeration system, the refrigerant is compressed into high-pressure high-temperature gaseous refrigerant through a compressor unit 4, the high-pressure high-temperature gaseous refrigerant is cooled and condensed into high-pressure liquid refrigerant through an air-cooled condenser 6, and the high-pressure liquid refrigerant enters the evaporator after being throttled and depressurized through an electronic expansion valve 8. The refrigerant is throttled and depressurized and then evaporated, the refrigerant flows in the heat exchange tube bundle tubes to absorb heat and vaporize, the liquid refrigerant absorbs a large amount of heat and then becomes a low-pressure low-temperature gaseous refrigerant, the low-pressure low-temperature gaseous refrigerant is subjected to cold and heat exchange with the heat exchange fins 22 outside the heat exchange tube bundle tubes 21 and the compressed air flowing in the evaporator tube shell 20, the heat in the compressed air is taken away by the refrigerant, the compressed air flowing through the evaporator tube shell is rapidly cooled to be below the dew point temperature, water molecules are separated from the air, moisture in the compressed air is condensed into water drops, most of the water vapor is in contact with the heat exchange fins 22 to be condensed into liquid water, the liquid water drops to the bottom of the tube shell under the action of gravity, the liquid water drops to a water storage cup 24 arranged at the bottom of the evaporator tube shell 20, and the water reaches a certain water level in the cup and is discharged through an automatic open-close type drainer (a conventional part not shown in the figure).
And the gas-liquid separator 3 is arranged on a gas suction pipeline between the evaporator 2 and the compressor unit 4 and is used for separating liquid refrigerant which is not vaporized yet and is carried out from the evaporator so as to prevent the liquid refrigerant from entering the compressor unit to cause wet operation and ensure that lubricating oil smoothly flows back.
The high-pressure sensor P1 and the low-pressure sensor P2 are electronic detection devices specially used for measuring pressure, are used for collecting measured data in a refrigeration system, convert the measured data into digital signals capable of being output according to a certain rule, provide the digital signals for the PLC 9 to control the air quantity of the cooling fan 61, and regulate the liquid supply quantity of the refrigerant through the data collected by the high-pressure sensor P1 and the low-pressure sensor P2 and program signals of the PLC 9.
The compressor unit 4 is capable of pumping refrigerant vapor from the evaporator 2 and reducing the pressure of the evaporator during the refrigeration cycle to maintain a desired evaporation temperature in the evaporator, and compressing the evaporated refrigerant vapor to increase the pressure of the refrigerant vapor to a saturation temperature higher than the temperature of the cooling medium to condense the refrigerant vapor.
Each check valve is arranged at the high-pressure outlet of the corresponding compressor and is used for preventing the backflow of the refrigerant when the compressor stops running.
The air-cooled condenser 6 compresses heat absorbed by the refrigerant in the evaporation process through the compressor unit 4, the temperature of refrigerant vapor is increased, the refrigerant vapor is transferred to a condensing medium through the air-cooled condenser, the temperature of the refrigerant vapor is gradually reduced to a saturation point along with the release of the heat from high-temperature and high-pressure vapor, the refrigerant vapor is condensed into liquid refrigerant, and the liquid refrigerant is evaporated again to absorb heat through throttling.
And the filter 7 is arranged in the refrigerating pipeline and used for filtering the refrigerating system and removing foreign metal debris in the system from the refrigerant so as to prevent the control element and the compressor unit from working abnormally and ensure the normal operation of the refrigerating system.
The electronic expansion valve 8 is a throttling element which can enter the flow of the refrigerant of the evaporator according to a preset program, has the advantages of large flow control range, sensitive response, rapid action, fine adjustment, stable action and the like, and adjusts the amount of the refrigerant liquid supply through the program signals of the high-pressure sensor P1 and the low-pressure sensor P2 and the PLC 9.
The compressed air precooler 1 (compressed air heat exchanger) is a cold-heat exchange between hot compressed air and cold compressed air, and mainly has the main functions of recovering cold energy carried by the cooled compressed air and using the cold energy to cool the hot compressed air to be dried, which carries a large amount of water vapor and has a higher temperature, so that the heat load of a refrigeration system of the device is reduced, and the purpose of energy saving is achieved.
The temperature and humidity sensor SN is used for collecting temperature signals and humidity signals, performing voltage stabilization filtering, operational amplification, nonlinear kernel positive, V/I conversion, constant current and reverse protection and other circuit processing, converting the temperature signals and the humidity signals into current signals or voltage signals in a linear relation with the temperature and the humidity, outputting the current signals or the voltage signals, providing signal parameters for the PLC 9 to operate and control, and enabling the PLC to determine the corresponding refrigeration dehumidification power and the number of compressors of the compressor unit 4 according to the collected temperature and humidity signals input under the current environmental climate condition.
The compressed air input 11-1 is connected via an air line to an air compressor (not shown in the figures as conventional) to which compressed air is supplied.
The touch screen TP is connected with the PLC 9 by a communication line alone; the compressor unit 4, the cooling fan 61 and the electronic expansion valve 8 share one cable and are connected with the PLC 9; the high-voltage sensor P1, the low-voltage sensor P2 and the temperature and humidity sensor SN share one communication line to be connected with the PLC 9.
In the present embodiment, there are 4 cooling fans 63 in total.
The upper curved end of the upper compressed air deflector is in full contact with the upper wall of the evaporator shell 20, while the lower curved end of the lower compressed air deflector is in full contact with the lower wall of the evaporator shell 20.
Claims (4)
1. The utility model provides a take frozen dehumidification economizer of compressed air of air-cooled condenser, includes evaporator, vapour and liquid separator, the rated refrigeration dehumidification power that connects through the refrigerant line is P compressor unit, air-cooled condenser, filter and electronic expansion valve, its characterized in that: the device also comprises a PLC controller, a touch screen, a temperature and humidity sensor for measuring the temperature and the humidity of the ambient air in real time and a compressed air precooler, wherein a compressed air input port is communicated with an air inlet of the evaporator through a heat exchange air pipe arranged in the compressed air precooler, an air outlet of the evaporator is communicated with a compressed air output port of the compressed air precooler,
the compressor set is respectively provided with rated power
The air-cooled condenser consists of a condenser shell, heat exchange tube bundles positioned in the condenser shell, heat exchange fins and at least one cooling fan, wherein a one-way valve is respectively connected between an input port of each heat exchange tube bundle and an outlet of each compressor, and an output port of each heat exchange tube bundle is connected with a filter;
the touch screen, the temperature and humidity sensor, the high-pressure sensor and the low-pressure sensor are in two-way communication with the PLC respectively, and the compressor unit, the cooling fan and the electronic expansion valve are controlled by the PLC.
2. The compressed air freezing and dehumidifying energy-saving device with the air-cooled condenser as claimed in claim 1, wherein: the compressed air precooler comprises a precooler tube shell and a heat exchange air tube, wherein the precooler tube shell consists of a main cavity, and an air inlet cavity and an air outlet cavity which are respectively arranged at two sides of the main cavity in an isolated manner; the evaporator comprises an evaporator tube shell, and a heat exchange tube bundle tube, a heat exchange fin and a compressed air deflector which are positioned in the evaporator tube shell, wherein the compressed air deflector is staggered up and down and is positioned in the evaporator tube shell at intervals; the bottom wall of the air outlet cavity is communicated with the evaporator tube shell, and the top wall of the evaporator tube shell is communicated with the bottom wall of the main cavity body; the heat exchange tube bundle tube and the heat exchange fin of the air-cooled condenser are an integral piece; the outlet of the electronic expansion valve is connected with the inlet of the heat exchange tube bundle tube of the evaporator.
3. The compressed air freezing and dehumidifying energy-saving device with the air-cooled condenser according to claim 1 or 2, wherein: the high-pressure sensor is arranged on a refrigerant pipe section which is connected with a heat exchange pipe bundle of the air-cooled condenser by three one-way valves.
4. The compressed air freezing and dehumidifying energy-saving device with the air-cooled condenser according to claim 1 or 2, wherein: the low pressure sensor is arranged on a gas return pipe section of a refrigerant pipeline which is formed by connecting inlets of the three compressors with an outlet of the gas-liquid separator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221537855.4U CN217685543U (en) | 2022-05-21 | 2022-05-21 | Compressed air freezing and dehumidifying energy-saving device with air-cooled condenser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221537855.4U CN217685543U (en) | 2022-05-21 | 2022-05-21 | Compressed air freezing and dehumidifying energy-saving device with air-cooled condenser |
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| CN217685543U true CN217685543U (en) | 2022-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382364A (en) * | 2022-11-01 | 2022-11-25 | 杭州嘉隆气体设备有限公司 | Intelligent freezing type compressed air dryer and use method |
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2022
- 2022-05-21 CN CN202221537855.4U patent/CN217685543U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115382364A (en) * | 2022-11-01 | 2022-11-25 | 杭州嘉隆气体设备有限公司 | Intelligent freezing type compressed air dryer and use method |
| CN115382364B (en) * | 2022-11-01 | 2023-03-10 | 杭州嘉隆气体设备有限公司 | Intelligent freezing type compressed air dryer and using method |
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