CN111927833B - Cooling and dehumidifying system, control method thereof and air compressor - Google Patents
Cooling and dehumidifying system, control method thereof and air compressor Download PDFInfo
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- CN111927833B CN111927833B CN202010698367.0A CN202010698367A CN111927833B CN 111927833 B CN111927833 B CN 111927833B CN 202010698367 A CN202010698367 A CN 202010698367A CN 111927833 B CN111927833 B CN 111927833B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/706—Humidity separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/006—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by influencing fluid temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/007—Conjoint control of two or more different functions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
- F04D29/5833—Cooling at least part of the working fluid in a heat exchanger flow schemes and regulation thereto
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Gases (AREA)
Abstract
The application provides a cooling and dehumidifying system, a control method thereof and an air compressor, wherein the cooling and dehumidifying system is used for cooling and dehumidifying air to be processed; the cooling dehumidification system includes: a heat exchange chamber and a dehumidifying device; a heat exchanger is arranged in the heat exchange chamber; the heat exchange chamber is used for cooling the air to be treated; the dehumidifying device is used for dehumidifying the air to be treated. According to the cooling and dehumidifying system, the control method and the air compressor, the environment is protected, and the temperature and the humidity of the gas can be effectively reduced.
Description
Technical Field
The application belongs to the technical field of air compressors, and particularly relates to a cooling and dehumidifying system, a control method of the cooling and dehumidifying system and an air compressor.
Background
At present, the bearing suspension stability of a high-speed direct-drive magnetic suspension cooling and dehumidifying system has higher requirements on the cleanliness and the dryness of inlet air. Under the condition of constant pressure and constant rotation speed, the higher the suction temperature is, the smaller the relative molecular weight of the gas is, the less the compression is generated by the compressor, and the more the surge is easily generated. Once surge occurs, the surge accuracy deteriorates and the suspended bearings may lose control. Meanwhile, when the humidity is too high, water drops can be separated out when the impeller is compressed, and the blades can be continuously impacted by water power to cause certain damage when the impeller runs at a high speed for a long time. In addition, the high-temperature and high-humidity can reduce the power consumption of the compressor, the cooling and dehumidifying system has useless work on the water vapor compressor and certain corrosivity, and the moisture in the water vapor compressor is attached to the compression equipment to cause rusting and damage of the equipment. Under the same operation condition, the power consumption of the compression wet is larger than that of the compression dry. When relative humidity in the middle of is higher, can produce the heat energy of higher grade during the compression, the higher temperature can be reached in the meeting after the compression, after the intercooler cooling, the temperature that gets into next stage is still higher, causes cooling dehumidification system's progression to increase. Therefore, the dehumidification and cooling of the inlet are important.
However, in the areas with cold winter and hot summer, the external temperature in summer can reach more than 35 ℃, and the relative humidity is 60-90%, so that the working efficiency of the cooling and dehumidifying system is greatly influenced. At present, the scholars propose that the precooling treatment of the inlet utilizes a lithium bromide refrigerating unit to cool the inlet, but in winter, the external temperature can also maintain lower temperature without cooling, and a large amount of refrigerant is continuously used to cause certain pollution to the environment.
Therefore, how to provide an environment-friendly cooling and dehumidifying system capable of effectively reducing the temperature and humidity of the gas, a control method thereof, and an air compressor is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide a cooling and dehumidifying system, a control method thereof and an air compressor, which are environment-friendly and can effectively reduce the temperature and humidity of gas.
In order to solve the above problems, the present application provides a cooling and dehumidifying system, which is used for cooling and dehumidifying air to be processed; cooling dehumidification system includes:
the heat exchange chamber is internally provided with a heat exchanger; the heat exchange chamber is used for cooling the air to be treated;
and the dehumidifying device is used for cooling and dehumidifying the air to be treated.
Preferably, the cooling and dehumidifying system further comprises a filtering structure, and the filtering structure is used for filtering the air to be treated; and/or the dehumidifying device is a water-gas separator.
Preferably, the heat exchange chamber has a heat exchange air inlet; the filtering structure is provided with a filtering exhaust port; the heat exchange air inlet is communicated with the filtering exhaust port and forms a cooling flow path;
and/or the heat exchange chamber is provided with a heat exchange exhaust port; the water-gas separator is provided with a separation gas inlet; the heat exchange exhaust port is communicated with the separation air inlet;
and/or the water-gas separator is provided with a separation water outlet.
Preferably, the cooling and dehumidifying system further comprises a first through-flow chamber; the first through-flow chamber has a first through-flow inlet; the first through-flow inlet is communicated with the filtering exhaust port and forms a first through-flow path;
and/or the first throughflow chamber has a first throughflow outlet; the first through-flow outlet is in communication with the separation inlet.
Preferably, the cooling and dehumidifying system comprises a confluence channel; the confluence channel comprises a confluence inlet; the heat exchange exhaust port and the first through-flow outlet are communicated to the confluence inlet;
and/or the confluence channel comprises a confluence outlet; the separation air inlet is communicated to the confluence outlet and forms a dehumidification flow path;
and/or the cooling and dehumidifying system also comprises an air inlet pipeline; the filtering structure is provided with a filtering air inlet; the filtering air inlet is communicated with the air inlet pipeline;
and/or the cooling and dehumidifying system also comprises an exhaust pipeline, and the water-gas separator is provided with a separation exhaust port; the separation exhaust port is communicated with an exhaust pipeline.
Preferably, the cooling and dehumidifying system further comprises a second through-flow chamber; the second through-flow chamber has a second through-flow inlet; the second through flow inlet is communicated to the confluence outlet and forms a second through flow channel;
and/or the second vent chamber has a second vent outlet; the second vent outlet is in communication with the exhaust conduit.
Preferably, the first through flow path is communicated, and the cooling flow path is disconnected into a first through state; the cooling flow path is communicated, and the first through-flow path is disconnected into a cooling state; the cooling and dehumidifying system is switchable between a first circulation state and a cooling state;
and/or the dehumidification flow path is disconnected into a second flow state when the dehumidification flow path is communicated with the second flow path; the dehumidification flow path is communicated, and the second flow path is disconnected to be in a dehumidification state; the cooling and dehumidifying system is switchable between a second flow-through state and a dehumidifying state.
Preferably, the cooling and dehumidifying system further comprises a first switching mechanism; the first switching mechanism is used for switching the cooling and dehumidifying system between a first circulation state and a cooling state;
and/or the cooling and dehumidifying system further comprises a second switching mechanism; the second switching mechanism is used for switching the temperature reduction and dehumidification system between a second flow-through state and a dehumidification state.
Preferably, the first switching mechanism is a first three-way valve; the first three-way valve has a first inlet end, a first outlet end and a second outlet end; the first inlet end is communicated with the filtering exhaust port; the first outlet end is communicated with the heat exchange air inlet; the second outlet end is communicated with the first through-flow inlet;
and/or the second switching mechanism is a second three-way valve; the second three-way valve has a second inlet end, a third outlet end and a fourth outlet end; the second inlet end is communicated with the confluence outlet; the third outlet end is communicated with the second through-flow inlet; the fourth outlet end is in communication with the separation inlet.
Preferably, the cooling and dehumidifying system further comprises a first check valve, and the first check valve is arranged at the first through-flow outlet;
and/or the cooling and dehumidifying system further comprises a second check valve, and the second check valve is arranged at the heat exchange air outlet.
Preferably, the cooling and dehumidifying system further comprises a temperature sensor; the temperature sensor is arranged at the filtering exhaust port;
and/or the cooling and dehumidifying system also comprises a humidity sensor; the humidity sensor is arranged in the confluence channel.
Preferably, the heat exchanger is a plate evaporator; and/or the water-gas separator is a filter element type water-gas separator; and/or the flow of the refrigerant in the heat exchanger can be adjusted.
Preferably, the cooling and dehumidifying system further comprises a refrigerant inlet pipe; a refrigerant inlet is arranged on the heat exchanger; the refrigerant inlet pipe is communicated to the refrigerant inlet.
Preferably, a throttling device is arranged on the refrigerant inlet pipe; the opening degree of the throttling device is adjustable.
Preferably, a heat exchange water outlet is arranged on the heat exchange chamber; and/or the throttling device is an electronic expansion valve.
Preferably, the cooling and dehumidifying system further comprises a controller; the controller is connected with the temperature sensor;
and/or the controller is connected with the humidity sensor;
and/or the controller is connected with the second switching mechanism, and the controller switches the cooling and dehumidifying system between the second circulation state and the dehumidifying state by controlling the second switching mechanism;
and/or the controller is connected with the first switching mechanism, and the controller switches the cooling and dehumidifying system between a first circulation state and a cooling state by controlling the first switching mechanism;
and/or the controller is connected with the throttling device and is used for controlling the opening of the throttling device.
According to another aspect of the application, an air compressor machine is provided, including cooling dehumidification system, cooling dehumidification system is foretell cooling dehumidification system.
According to still another aspect of the present application, there is provided a control method of a cooling and dehumidifying system, including the steps of:
acquiring a temperature value of air at a filtering exhaust port;
controlling the temperature reduction and dehumidification system to switch between a first circulation state and a temperature reduction state according to the temperature value of the air at the filtering exhaust port;
and/or acquiring a humidity value of air in the confluence channel;
and controlling the cooling and dehumidifying system to switch between the second flow-through state and the dehumidifying state according to the humidity value of the air in the confluence channel.
Preferably, the control method of the cooling and dehumidifying system further includes the steps of:
acquiring a temperature value of air at a filtering exhaust port;
and controlling the opening of the electronic expansion valve according to the temperature value of the air at the filtering exhaust port.
Preferably, the step of controlling the temperature reduction and dehumidification system to switch between the first flow-through state and the temperature reduction state according to the temperature value of the air at the filtered air outlet comprises the following steps:
when the temperature value of the air at the filtering exhaust port is greater than a first preset temperature value, controlling the cooling and dehumidifying system to be switched to a cooling state;
and/or when the temperature value of the air at the filtering exhaust port is smaller than a first preset temperature value; controlling the cooling and dehumidifying system to be switched to a first circulation state;
and/or the step of controlling the cooling and dehumidifying system to switch between the second flow-through state and the dehumidifying state according to the humidity value of the air in the confluence channel comprises the following steps:
when the humidity value of the air in the confluence channel is larger than the preset humidity value, controlling the cooling and dehumidifying system to be switched to a dehumidifying state;
and/or when the humidity value of the air in the confluence channel is smaller than the preset humidity value, controlling the cooling and dehumidifying system to be switched to a second circulation state.
The cooling dehumidification system and the control method thereof, air compressor machine that this application provided cool down the air of treating through the heat exchanger, adopt dehydrating unit to dehumidify, not only environmental protection, and can reduce gas temperature and humidity effectively, the gas after will handling is used for admitting air of air compressor machine, can effectually reduce the energy consumption of air compressor machine, improves the work efficiency of air compressor machine.
Drawings
Fig. 1 is a schematic structural diagram of a cooling and dehumidifying system according to an embodiment of the present application.
The reference numerals are represented as:
1. a heat exchange chamber; 11. a heat exchanger; 2. a water-gas separator; 21. a separation gas inlet; 22. a separation exhaust port; 23. a separation water outlet; 24. a filter element; 3. a filter structure; 4. an air intake duct; 5. a first flow-through chamber; 6. a second flow-through chamber; 71. a first switching mechanism; 72. a second switching mechanism; 81. a temperature sensor; 82. a humidity sensor; 91. a first check valve; 92. a second check valve.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present application, a cooling and dehumidifying system is used for cooling and dehumidifying air to be processed; cooling dehumidification system includes: the heat exchange system comprises a heat exchange chamber 1 and a dehumidifying device, wherein a heat exchanger 11 is arranged in the heat exchange chamber 1; the heat exchange chamber 1 is used for cooling and dehumidifying air to be treated; the dehumidifying device is used for dehumidifying the air to be treated, cools the air to be treated through the heat exchanger 11, adopts the dehumidifying device to dehumidify, is not only environment-friendly, but also can effectively reduce the air inlet temperature and the humidity, and then reduces the energy consumption of the air compressor and improves the working efficiency of the air compressor. Meanwhile, air wet air with high humidity is cooled in the heat exchange chamber 1 to become condensed water, so that the air to be treated can also have a water precipitation effect in the heat exchange chamber 1, high-temperature and high-humidity gas achieves a double water precipitation effect through the heat exchange chamber 1 and the dehumidifying device, and the dryness of the inlet air is ensured.
Further, the cooling and dehumidifying system further comprises a filtering structure 3, and the filtering structure 3 is used for filtering the air to be treated; and/or the dehumidifying device is a water-gas separator 2.
Further, the heat exchange chamber 1 has a heat exchange air inlet; the filter structure 3 has a filter exhaust port; the heat exchange air inlet is communicated with the filtering exhaust port and forms a cooling flow path;
and/or the heat exchange chamber 1 is provided with a heat exchange exhaust port; the moisture separator 2 has a separation inlet 21; the heat exchange exhaust port is communicated with the separation air inlet 21;
and/or, the moisture separator 2 has a separation drain 23 for discharging the separated moisture.
Further, the cooling and dehumidifying system further comprises a first through-flow chamber 5; the first through-flow chamber 5 has a first through-flow inlet; the first through-flow inlet is communicated with the filtering exhaust port and forms a first through-flow path;
and/or the first throughflow chamber 5 has a first throughflow outlet; the first throughflow outlet communicates with the separation inlet 21.
Further, the cooling and dehumidifying system comprises a confluence channel; the confluence channel comprises a confluence inlet; the heat exchange exhaust port and the first through-flow outlet are communicated to the confluence inlet;
and/or the confluence channel comprises a confluence outlet; the separation air inlet 21 is communicated to the confluence outlet and forms a dehumidification flow path;
and/or the cooling and dehumidifying system also comprises an air inlet pipeline 4; the filter structure 3 has a filter air inlet; the filtering air inlet is communicated with the air inlet pipeline 4;
and/or the cooling and dehumidifying system further comprises an exhaust pipeline, and the water-gas separator 2 is provided with a separation exhaust port 22; the separation exhaust port 22 communicates with an exhaust duct.
Further, the cooling and dehumidifying system also comprises a second through-flow chamber 6; the second through-flow chamber 6 has a second through-flow inlet; the second through flow inlet is communicated to the confluence outlet and forms a second through flow channel;
and/or the second flow-through chamber 6 has a second flow-through outlet; the second vent outlet is in communication with the exhaust conduit.
Furthermore, the first through flow path is communicated, and the cooling flow path is disconnected into a first through state; the cooling flow path is communicated, and the first through-flow path is disconnected into a cooling state; the temperature reduction and dehumidification system can be switched between a first circulation state and a temperature reduction state, when the temperature of the gas to be treated is high, the temperature reduction state is switched, and when the temperature of the gas to be treated is low, the first circulation state is switched; the high-temperature gas and the low-temperature gas are circulated in a shunt way, the utilization rate of cooling and dehumidifying equipment is reduced, and the cost is saved.
And/or the dehumidification flow path is disconnected into a second flow state when the dehumidification flow path is communicated with the second flow path; the dehumidification flow path is communicated, and the second flow path is disconnected to be in a dehumidification state; the cooling and dehumidifying system can be switched between a second circulation state and a dehumidifying state, when the humidity of the gas to be treated is high, the cooling and dehumidifying system is switched to the dehumidifying state, and when the humidity of the gas to be treated is low, the cooling and dehumidifying system is switched to the second circulation state; the high-humidity gas and the low-humidity gas are enabled to circulate in a shunt way, the utilization rate of the dehumidification equipment is reduced, and the cost is saved.
Further, the cooling and dehumidifying system further includes a first switching mechanism 71; the first switching mechanism 71 is used for switching the temperature reduction and dehumidification system between a first circulation state and a temperature reduction state;
and/or, the cooling and dehumidifying system further comprises a second switching mechanism 72; the second switching mechanism 72 is used for switching the temperature reduction and dehumidification system between the second flow-through state and the dehumidification state.
Further, the first switching mechanism 71 is a first three-way valve; the first three-way valve has a first inlet end, a first outlet end and a second outlet end; the first inlet end is communicated with the filtering exhaust port; the first outlet end is communicated with the heat exchange air inlet; the second outlet end is communicated with the first through-flow inlet;
and/or the second switching mechanism 72 is a second three-way valve; the second three-way valve has a second inlet end, a third outlet end and a fourth outlet end; the second inlet end is communicated with the confluence outlet; the third outlet end is communicated with the second through-flow inlet; the fourth outlet port communicates with the separation intake port 21.
Further, the cooling and dehumidifying system further comprises a first check valve 91, the first check valve 91 is arranged at the first through-flow outlet, the first check valve 91 comprises a first valve plate, and the first valve plate is arranged at the first through-flow outlet; when the pressure in the first through-flow chamber 5 is greater than the pressure on the other side of the first valve plate; pressing the first valve plate open; the gas flows to the confluence channel through the first flow passing chamber 5;
and/or the cooling and dehumidifying system further comprises a second check valve 92, the second check valve 92 is arranged at the heat exchange air outlet, the second check valve 92 comprises a second valve plate, and the first valve plate is arranged at the heat exchange air outlet; when the pressure in the heat exchange chamber 1 is higher than the pressure on the other side of the second valve plate, the second valve plate is pressed open; the gas flows through the heat exchange chamber 1 to the converging channel.
Further, the cooling and dehumidifying system further includes a temperature sensor 81; the temperature sensor 81 is arranged at the filtering exhaust port;
and/or, the cooling and dehumidifying system further comprises a humidity sensor 82; the humidity sensor 82 is disposed in the bus duct.
Further, the heat exchanger 11 is a plate evaporator; and/or the water-gas separator 2 is a filter element type water-gas separator; and/or the flow of the refrigerant in the heat exchanger 11 is adjustable, the plate-type evaporator is easy to replace, and the later maintenance is convenient; the filter element type water-gas separator is provided with a filter element 24; the filter element 24 is easy to replace and convenient for later maintenance.
Furthermore, the cooling and dehumidifying system also comprises a refrigerant inlet pipe; a refrigerant inlet is arranged on the heat exchanger 11; the refrigerant inlet pipe is communicated to the refrigerant inlet.
Furthermore, a throttling device is arranged on the refrigerant inlet pipe; the opening degree of the throttling device is adjustable, and the flow of the refrigerant entering the heat exchanger can be controlled so as to control the temperature in the heat exchange chamber 1.
Further, a heat exchange water outlet is arranged on the heat exchange chamber 1; and/or the throttling device is an electronic expansion valve; the heat exchange water outlet is arranged at the bottom of the heat exchange chamber 1, a control valve is arranged at the heat exchange water outlet and is an automatic control valve, when a certain amount of water reaches the water outlet, the control valve is opened to drain water, and the control valve is in the prior art. When the wet air exchanges heat with the heat exchanger, the water vapor in the wet air is condensed into water drops when meeting cold, and the water drops drop to the bottom of the heat exchange chamber due to the influence of gravity and are finally discharged through the heat exchange water outlet.
Further, the cooling and dehumidifying system also comprises a controller; the controller is connected with the temperature sensor 81, and the controller acquires a temperature value measured by the temperature sensor 81;
and/or the controller is connected with the humidity sensor 82, and the controller acquires a humidity value measured by the humidity sensor 82;
and/or the controller is connected with the second switching mechanism 72, and the controller switches the cooling and dehumidifying system between the second flow-through state and the dehumidifying state by controlling the second switching mechanism 72;
and/or the controller is connected with the first switching mechanism 71, and the controller switches the cooling and dehumidifying system between the first flow-through state and the cooling state by controlling the first switching mechanism 71;
and/or the controller is connected with the throttling device and is used for controlling the opening of the throttling device so as to control the flow of the refrigerant in the heat exchanger 11, further control the temperature of the heat exchanger 11 and the temperature in the heat exchange chamber 1 and finally control the temperature of the air to be treated in the heat exchange chamber 1.
According to the embodiment of the application, an air compressor is provided, including cooling dehumidification system, cooling dehumidification system is foretell cooling dehumidification system. Gas in the exhaust duct among the dehumidification system of will cooling transmits to the air compressor machine in, exhaust duct and air compressor machine air inlet intercommunication, and when the air compressor machine was operated, the high-speed rotation of compressor inner impeller made this cooling dehumidification system in the negative pressure state, and the outside air gets into and handles in this cooling dehumidification system.
According to an embodiment of the application, a control method of a cooling and dehumidifying system is provided, which includes the following steps:
acquiring a temperature value of air at a filtering exhaust port;
controlling the temperature reduction and dehumidification system to switch between a first circulation state and a temperature reduction state according to the temperature value of the air at the filtering exhaust port;
and/or acquiring a humidity value of air in the confluence channel;
and controlling the cooling and dehumidifying system to switch between the second flow-through state and the dehumidifying state according to the humidity value of the air in the confluence channel. The high-temperature gas and the low-temperature gas are circulated in a shunt way, the utilization rate of cooling and dehumidifying equipment is reduced, and the cost is saved. When the humidity of the gas to be treated is high, switching to a dehumidification state, and when the humidity of the gas to be treated is low, switching to a second circulation state; the high-humidity gas and the low-humidity gas are enabled to circulate in a shunt way, the utilization rate of the dehumidification equipment is reduced, and the cost is saved.
Further, the control method of the cooling and dehumidifying system further comprises the following steps:
acquiring a temperature value of air at a filtering exhaust port;
and controlling the opening of the electronic expansion valve according to the temperature value of the air at the filtering exhaust port. The higher the temperature value of the air at the filtering exhaust port is, the larger the opening of the electronic expansion valve is, the larger the refrigerant flow path is, the lower the temperature of the heat exchanger is, and the better the cooling effect on the air is.
Further, the step of controlling the temperature reduction and dehumidification system to switch between the first circulation state and the temperature reduction state according to the temperature value of the air at the filtering exhaust port comprises the following steps:
when the temperature value of the air at the filtering exhaust port is greater than a first preset temperature value, controlling the cooling and dehumidifying system to be switched to a cooling state;
and/or when the temperature value of the air at the filtering exhaust port is smaller than a first preset temperature value; controlling the cooling and dehumidifying system to be switched to a first circulation state;
and/or the step of controlling the cooling and dehumidifying system to switch between the second flow-through state and the dehumidifying state according to the humidity value of the air in the confluence channel comprises the following steps:
when the humidity value of the air in the confluence channel is larger than the preset humidity value, controlling the cooling and dehumidifying system to be switched to a dehumidifying state;
and/or when the humidity value of the air in the confluence channel is smaller than the preset humidity value, controlling the cooling and dehumidifying system to be switched to a second circulation state.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (20)
1. The cooling and dehumidifying system is characterized in that the cooling and dehumidifying system is used for cooling and dehumidifying air to be treated; the cooling dehumidification system includes:
the heat exchanger comprises a heat exchange chamber (1), wherein a heat exchanger (11) is arranged in the heat exchange chamber (1); the heat exchange chamber (1) is used for cooling the air to be treated;
the dehumidifying device is used for dehumidifying the air to be treated; the dehumidifying device is a water-gas separator (2); the heat exchange chamber (1) is provided with a heat exchange exhaust port; the moisture separator (2) has a separation inlet (21); the heat exchange exhaust port is communicated with the separation air inlet (21);
the cooling and dehumidifying system also comprises a first through-flow chamber (5); the first throughflow chamber (5) has a first throughflow outlet; the cooling and dehumidifying system comprises a confluence channel; the cooling and dehumidifying system further comprises a first check valve (91), and the first check valve (91) is arranged at the first through-flow outlet; when the pressure in the first through-flow chamber (5) is greater than the pressure on the other side of the first check valve (91); pressing the first check valve (91) open; the heat exchange chamber (1) and the first through-flow chamber (5) are arranged in parallel, and the air to be treated can selectively enter the heat exchange chamber (1) and the first through-flow chamber (5); the confluence channel comprises a confluence inlet; the heat exchange exhaust port and the first through-flow outlet are communicated to the confluence inlet; the air to be treated enters the confluence inlet through the first through-flow chamber (5) or the heat exchange chamber (1) and flows to the confluence channel;
the cooling and dehumidifying system also comprises a second through-flow chamber (6); the confluence channel comprises a confluence outlet; the second through-flow chamber (6) has a second through-flow inlet; the water-gas separator (2) and the second through-flow chamber (6) are arranged in parallel, and the separation air inlet (21) and the second through-flow inlet are communicated to the confluence outlet; the gas in the confluence channel can selectively enter the water-gas separator (2) and the second through-flow chamber (6).
2. Cooling and dehumidification system according to claim 1, further comprising a filter structure (3), wherein said filter structure (3) is configured to filter the air to be treated.
3. A cooling and dehumidifying system as claimed in claim 2, wherein the heat exchange chamber (1) has a heat exchange air inlet; the filter structure (3) has a filter vent; the heat exchange air inlet is communicated with the filtering air outlet and forms a cooling flow path;
and/or the water-gas separator (2) is provided with a separation water outlet (23).
4. A cooling and dehumidifying system as claimed in claim 3, wherein the first through-flow chamber (5) has a first through-flow inlet; the first through-flow inlet is communicated with the filtering exhaust port and forms a first through-flow path;
and/or the first throughflow outlet communicates with the separation inlet (21).
5. The cooling and dehumidifying system of claim 4, wherein the separation air inlet (21) is connected to the confluence outlet to form a dehumidifying flow path;
and/or the cooling and dehumidifying system further comprises an air inlet pipeline (4); the filter structure (3) has a filter air inlet; the filtering air inlet is communicated with the air inlet pipeline (4);
and/or the cooling and dehumidifying system further comprises an exhaust pipeline, and the water-gas separator (2) is provided with a separation exhaust port (22); the separation exhaust port (22) is in communication with the exhaust conduit.
6. The cooling and dehumidifying system of claim 5 wherein the second vent inlet is connected to the manifold outlet to form a second vent flow path;
and/or the second flow-through chamber (6) has a second flow-through outlet; the second vent outlet is in communication with the exhaust conduit.
7. The cooling and dehumidifying system of claim 6 wherein the cooling flow path is disconnected to a first flow state by the first flow path being connected; the cooling flow path is communicated, and the first through-flow path is disconnected into a cooling state; the cooling and dehumidifying system is switchable between the first flow-through state and the cooling state;
and/or, the dehumidification flow path is disconnected into a second flow state by the communication of the second flow path; the dehumidification flow path is communicated, and the second flow path is disconnected to be in a dehumidification state; the desuperheating and dehumidification system is switchable between the second flow-through state and the dehumidification state.
8. A cooling and dehumidifying system as claimed in claim 7, further comprising a first switching mechanism (71); the first switching mechanism (71) is used for switching the temperature reduction and dehumidification system between a first flow state and the temperature reduction state;
and/or the cooling and dehumidifying system further comprises a second switching mechanism (72); the second switching mechanism (72) is used for switching the temperature reduction and dehumidification system between the second flow-through state and the dehumidification state.
9. Cooling and dehumidification system according to claim 8, characterized in that said first switching means (71) is a first three-way valve; the first three-way valve having a first inlet end, a first outlet end, and a second outlet end; the first inlet end is in communication with the filtering exhaust port; the first outlet end is communicated with the heat exchange air inlet; the second outlet end is communicated with the first through-flow inlet;
and/or the second switching mechanism (72) is a second three-way valve; the second three-way valve having a second inlet end, a third outlet end, and a fourth outlet end; the second inlet end is communicated with the confluence outlet; the third outlet port is communicated with the second through-flow inlet port; the fourth outlet end communicates with the separation inlet (21).
10. A cooling and dehumidifying system as claimed in claim 6, further comprising a second check valve (92), the second check valve (92) being disposed at the heat exchange exhaust port.
11. Cooling and dehumidifying system according to claim 8, characterized in that it further comprises a temperature sensor (81); the temperature sensor (81) is arranged at the filtering exhaust port;
and/or the cooling and dehumidifying system further comprises a humidity sensor (82); the humidity sensor (82) is disposed within the sink channel.
12. A cooling and dehumidifying system as claimed in claim 11, wherein the heat exchanger (11) is a plate evaporator; and/or the water-gas separator (2) is a filter element type water-gas separator; and/or the flow of the refrigerant in the heat exchanger (11) is adjustable.
13. The system of claim 12, further comprising a cooling inlet pipe; a refrigerant inlet is formed in the heat exchanger (11); the refrigerant inlet pipe is communicated to the refrigerant inlet.
14. A cooling and dehumidifying system as claimed in claim 13, wherein a throttling means is provided on the refrigerant inlet pipe; the opening degree of the throttling device is adjustable.
15. A cooling and dehumidifying system as claimed in claim 14, wherein the heat exchange chamber (1) is provided with a heat exchange water outlet; and/or the throttling device is an electronic expansion valve.
16. The system of claim 14, further comprising a controller; the controller is connected with the temperature sensor (81);
and/or the controller is connected with the humidity sensor (82);
and/or the controller is connected with the second switching mechanism (72), and the controller switches the temperature reduction and dehumidification system between the second flow-through state and the dehumidification state by controlling the second switching mechanism (72);
and/or the controller is connected with the first switching mechanism (71), and the controller switches the cooling and dehumidifying system between a first circulation state and the cooling state by controlling the first switching mechanism (71);
and/or the controller is connected with the throttling device and is used for controlling the opening degree of the throttling device.
17. An air compressor, comprising a cooling and dehumidifying system, wherein the cooling and dehumidifying system is the cooling and dehumidifying system of any one of claims 1 to 16.
18. A method of controlling a temperature reducing dehumidification system as defined in any one of claims 7 to 16, comprising the steps of:
acquiring a temperature value of air at a filtering exhaust port;
when the first through flow path is communicated, the cooling flow path is disconnected into a first through state; when the cooling flow path is communicated and the first through flow path is disconnected to be in a cooling state, the cooling and dehumidifying system is controlled to be switched between a first flow state and a cooling state according to the temperature value of the air at the filtering exhaust port;
and/or acquiring a humidity value of air in the confluence channel;
when the second flow passage is communicated, the dehumidification flow passage is disconnected into a second flow passage state; and when the dehumidification flow path is communicated and the second flow path is disconnected to be in a dehumidification state, the cooling and dehumidification system is controlled to be switched between the second flow state and the dehumidification state according to the humidity value of the air in the confluence flow path.
19. The method of controlling a temperature reducing dehumidification system as set forth in claim 18, further comprising the steps of:
acquiring a temperature value of air at a filtering exhaust port;
when the cooling and dehumidifying system further comprises a refrigerant inlet pipe, a throttling device is arranged on the refrigerant inlet pipe, and when the throttling device is an electronic expansion valve, the opening degree of the electronic expansion valve is controlled according to the temperature value of the air at the filtering exhaust port.
20. A method as claimed in claim 18, wherein said controlling the temperature of the air at the filtered exhaust port to switch between the first flow-through state and the temperature-reducing state comprises the steps of:
when the temperature value of the air at the filtering exhaust port is greater than a first preset temperature value, controlling the cooling and dehumidifying system to be switched to the cooling state;
and/or when the temperature value of the air at the filtering exhaust outlet is smaller than a first preset temperature value; controlling the cooling and dehumidifying system to be switched to the first circulation state;
and/or the step of controlling the cooling and dehumidifying system to switch between the second flow-through state and the dehumidifying state according to the humidity value of the air in the confluence channel comprises the following steps:
when the humidity value of the air in the confluence channel is larger than a preset humidity value, controlling the cooling and dehumidifying system to be switched to the dehumidifying state;
and/or when the humidity value of the air in the confluence channel is smaller than a preset humidity value, controlling the cooling and dehumidifying system to be switched to the second circulation state.
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