CN109442822B - Throttling device of air conditioning system and control method thereof - Google Patents
Throttling device of air conditioning system and control method thereof Download PDFInfo
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- CN109442822B CN109442822B CN201811433331.9A CN201811433331A CN109442822B CN 109442822 B CN109442822 B CN 109442822B CN 201811433331 A CN201811433331 A CN 201811433331A CN 109442822 B CN109442822 B CN 109442822B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air-Flow Control Members (AREA)
Abstract
The application provides a throttling device of an air conditioning system and a control method thereof, wherein the throttling device is arranged between a condenser and an evaporator and comprises a throttling box and an installation box arranged at one side of the throttling box, a throttling plate is arranged in the throttling box, and throttling holes are formed in the throttling plate; a groove is formed in the side wall, connected with the mounting box, of the throttling box, a baffle is arranged in the mounting box, the baffle penetrates through the groove and is arranged in parallel with the throttling plate, and one end of the baffle is connected with a driving device arranged outside the mounting box through a transmission device; the inside filter that all is provided with in the left and right sides of throttle plate in the throttle box, the top of throttle box is provided with the bypass pipeline of UNICOM left and right sides filter. According to the application, through adjusting the flow change of the refrigerant entering the evaporator, the flow of the refrigerant entering the evaporator through the throttling box is regulated and controlled according to actual conditions, the running performance of the unit is improved, the operation is simple, the precision is high, and the energy is saved.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to a throttling device of an air conditioning system and a control method thereof.
Background
Air conditioners are air conditioners. Refers to the process of manually adjusting and controlling parameters such as temperature, humidity, cleanliness, speed and the like of ambient air in a building/structure. Generally comprises a cold source/heat source device, a cold and hot medium conveying and distributing system, an end device and other auxiliary devices. Mainly comprises a water pump, a fan and a pipeline system. The tail end device is responsible for specifically treating air and temperature by utilizing the transmitted cold and heat quantity, so that the air parameters of the target environment meet the requirements.
At present, with the improvement of the living standard of people and the enhancement of energy conservation consciousness, the air conditioner has been moved into wide families with the characteristics of energy conservation, flexible control, easy installation and maintenance, and the like, and is increasingly widely applied. In recent years, energy is tense, and national policies also put higher and higher demands on energy-saving and efficient operation of air conditioning systems. But the throttle device of the large-scale central air conditioning system that some buildings at present, large-scale mill etc. used controls inconveniently, and the precision is inaccurate, leads to the refrigeration effect not good, and the temperature is difficult to control, and the central air conditioning throttle device in the market at present is mainly the orifice plate, but the throttle area of orifice plate is fixed unchangeable, leads to the throttle area not adjustable, and then the flow size of refrigerant can not regulate and control, and this leads to the throttle device to be difficult to according to the more reasonable flow of control refrigerant of actual conditions, influences the performance and the operational reliability of unit, extravagant energy, can not reach expected effect. The prior art disclosed before the present application is as follows:
the reference 1 (CN 107806725 a) discloses a throttle device, which comprises a throttle orifice device, the throttle orifice device comprises a throttle orifice plate and an adjusting mechanism, the throttle orifice plate is provided with a throttle orifice, and the adjusting mechanism is used for adjusting the throttle area of the throttle orifice. The adjustment mechanism includes an actuating mechanism and an adjustment member, the adjustment member being movably disposed relative to the orifice plate, the actuating mechanism driving the adjustment member relative to the orifice plate between a first position in which the adjustment member is clear of the orifice and a second position in which the adjustment member shields at least a portion of the orifice. The adjustment member is movably disposed relative to the orifice plate and the actuating mechanism drives the adjustment member between a first position and a second position. The orifice plate is provided with a chute, the adjusting piece is in sliding fit with the chute, and the actuating mechanism drives the adjusting piece to slide in the chute so as to enable the adjusting piece to move between a first position and a second position. The length direction of the sliding groove is along the aperture direction of the throttle hole. An actuating mechanism is movably coupled to the orifice plate and moves the adjustment member between the first position and the second position by moving relative to the orifice plate. The actuating mechanism comprises a threaded connecting piece which is connected to the throttle plate in a threaded manner and is in driving connection with the adjusting piece, and the adjusting piece can be moved between a first position and a second position by screwing the threaded connecting piece. The adjustment mechanism further includes a return member for applying a force to the adjustment member that moves the adjustment member from the second position to the first position. The throttle device comprises at least two throttle orifice devices, and throttle orifice plates of the at least two throttle orifice devices are arranged in series with each other. As can be seen from the above description, the reference 1 is a reference in which the flow rate is adjusted by adjusting the aperture size of the orifice on the throttle plate, and the reference 1 uses a bypass valve for control, and does not use a servo motor. In addition, in terms of the mechanism, no bypass pipe is provided in the comparative document 1, and therefore the present inventors consider that the comparative document 1 does not disclose all the technical solutions of the present application.
The comparison document 2 (CN 103206817A) discloses an adjustable throttling device, which comprises a throttling seat, a throttling orifice plate arranged in the throttling seat in a sliding manner and an adjusting mechanism for automatically adjusting the position of the throttling orifice plate in the throttling seat; the adjusting mechanism comprises a first adjusting component and a second adjusting component; the first adjusting component comprises a first cylinder body arranged on one side of the throttle seat, a first piston arranged in the first cylinder body in a sliding manner, a first piston rod connected to the first piston and a first elastic element connected between the first piston and the bottom end of the first cylinder body; the second adjusting component comprises a second cylinder body arranged on the other side of the throttle seat, a second piston arranged in the second cylinder body in a sliding manner, a second piston rod connected to the second piston and a second elastic element connected between the second piston and the bottom end of the second cylinder body, wherein the first piston rod and the second piston rod are propped against the left side and the right side of the throttle orifice plate, and an air conditioning system using the throttle device is further provided. Although reference 2 is also an improvement of the throttle device, the reference is to adjust the throttle flow by adjusting the left and right sides of the throttle plate by driving the piston rod with the piston. And, the specific location of its setting is not disclosed in this comparative document.
Therefore, the inventor of the application carries out continuous experimental study, optimizes and improves on the basis of the prior art, and provides a throttling device of an air conditioning system which is convenient to control so as to solve the problems in the prior art.
Disclosure of Invention
In order to overcome the defects in the prior art, the application aims to provide the throttling device of the air conditioning system, which can intelligently control and adjust the throttling area of the throttling plate in the throttling device, avoid excessive waste, has no influence on the unit performance due to the fact that the flow of the refrigerant is not controlled, and is simple in structure and convenient to use.
The second object of the present application is to provide a control method of a throttle device air conditioning system, which can intelligently control and adjust the throttle area of a throttle plate in the throttle device, avoid excessive waste, and prevent the refrigerant flow from affecting the performance of a unit, and has a simple structure and convenient use.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
a throttling device of an air conditioning system, the throttling device is arranged between a condensation 14 and an evaporator 15, the throttling device comprises a throttling box 1 and a mounting box 4 arranged on one side of the throttling box 1, a throttling plate 2 is arranged in the throttling box 1, and a throttling hole 3 is arranged on the throttling plate 2; a groove 24 is formed in the side wall of the throttle box 1, which is connected with the installation box 4, a baffle 11 is arranged in the installation box 4, the baffle 11 passes through the groove 24 and is arranged in parallel with the throttle plate 2, and one end of the baffle 11 is connected with a driving device arranged outside the installation box 4 through a transmission device; the inside of the left side and the right side of the throttle plate 2 in the throttle box 1 are respectively provided with a filter 18, and the top of the throttle box 1 is provided with a bypass pipeline 16 communicated with the left filter 18 and the right filter 18.
The throttle device of the air conditioning system, the driving device comprises: a servo motor 6 arranged on the outer side wall of the installation box 4; the transmission device comprises: the novel throttle valve comprises a screw rod 8, a transmission nut 9, a connecting block 10, a sliding block 12 and a sliding rail 13, wherein the screw rod 8 is fixedly connected with the end part of an output shaft of a servo motor 6 through a coupler 7, the screw rod 8 penetrates through the side wall and the inside of a mounting box 4, the tail end of the screw rod is fixedly arranged on the side wall of the throttle box 1 through a bearing 25, the transmission nut 9 is connected to the screw rod 8 in a threaded transmission manner, the transmission nut 9 is fixedly arranged on the connecting block 10, one end of the connecting block 10 is fixedly arranged on a baffle 11, the upper end and the lower end of the baffle 11 are provided with the sliding block 12, the sliding rail 13 is arranged in the position parallel to the throttle plate 2 in the throttle box 1 and the inside of the mounting box 4, and the sliding block 12 slides in the sliding rail 13.
The throttle device of the air conditioning system is characterized in that a limiting block 22 is arranged on the inner side wall of the installation box 4, and the limiting block 22 is on the same side with the servo motor 6 and the coupler 7.
The throttle device of the air conditioning system, one side of the installation box 4 is provided with a fixing device for installing a fixed driving device, and the fixing device comprises: mounting panel 5 and floor 19, mounting panel 5 rely on drive arrangement, set up perpendicularly on mounting box 4, floor 19 set up between mounting box 4 and mounting panel 5, be the tripod form.
The throttle device of the air conditioning system is characterized in that a protective cover 20 is arranged on the outer side of the driving device, the protective cover 20 is fixed on the mounting plate 5, and a plurality of heat dissipation holes 21 are formed in the protective cover 20.
In the throttling device of the air conditioning system, a sealing strip 23 is arranged in the groove 24, and the sealing strip 23 is in close contact with the baffle 11.
A control method of a throttling device of an air conditioning system comprises the following specific steps:
71. firstly, starting a compressor;
72. at the same time, the temperature sensor/sensor starts working;
73. then, the temperature sensor detects the temperature of the tuyere in real time and transmits the tuyere temperature to the receiving module through the temperature transmitter;
74. then, the receiving module transmits the detected temperature to the central processing unit;
75. the central processing unit processes and calculates the temperature detected by the temperature sensor, and when the temperature difference calculated by the central processing unit is lower than or equal to a preset value, the central processing unit sends a signal to the transmission module;
76. the transmission module sends the received result to the controller;
77. at this time, the controller determines whether to raise or lower the temperature, and thereby determines whether the driving device is performing forward or reverse rotation; if warm up is performed, step 78 is performed, and if cool down is performed, step 79 is performed;
78. the servo motor is reversed, the baffle 11 is retreated, the area of the throttle hole 3 on the shielding throttle plate 2 is reduced, the circulation flow of the refrigerant is increased, and the great temperature reduction is realized;
79. the servo motor rotates positively, the baffle 11 advances, the area of the throttle hole 3 on the shielding throttle plate 2 is increased, the circulation flow of the refrigerant is reduced, and the temperature reduction amplitude is reduced, so that the temperature rise is realized.
In the control method of the throttling device of the air conditioning system, in the step 78, the servo motor 6 is reversed, the servo motor 6 drives the screw rod 8 to rotate, the screw rod 8 drives the transmission nut 9 to move backwards along the screw rod 8, drives the connecting block 10 to move backwards, drives the baffle 11 to slide backwards, the area of the throttling hole 3 on the throttling plate 2 is blocked by the baffle 11 to be reduced, the flow rate of the refrigerant passing through the throttling hole is increased, the flow rate of the refrigerant entering the evaporator 15 is increased, and the large-scale cooling is realized.
In the control method of the throttling device of the air conditioning system, in the step 79, the servo motor 6 rotates positively, the servo motor 6 drives the screw rod 8 to rotate, the screw rod 8 drives the transmission nut 9 to move forwards along the screw rod 8, the connecting block 10 is driven to move forwards, the baffle 11 is driven to slide forwards, the area of the throttling hole 3 on the throttling plate 2 is covered by the baffle 11 to be increased, the flow of the refrigerant passing through the throttling hole is reduced, the flow of the refrigerant entering the evaporator 15 is reduced, and the temperature reduction amplitude is reduced so as to realize temperature rise.
According to the control method of the throttling device of the air conditioning system, the refrigerant passes through the throttling box 1, is further filtered by the filter 18 and enters the evaporator 15, after the liquid refrigerant is conveyed into the evaporator 15, the space is suddenly increased and the pressure is reduced, the liquid refrigerant is vaporized, the gaseous refrigerant can absorb a large amount of heat around, the cooling effect is further achieved, and then the refrigerant is compressed again by the compressor to circulate.
The beneficial effects of using the application are as follows:
1. according to the application, the screw rod is driven to rotate by the servo motor, the screw rod drives the transmission nut to move along the screw rod, the connecting block is driven to move, the baffle is driven to slide in the sliding rail, the area of the baffle shielding the throttle plate is changed, the flow rate of the refrigerant passing through the throttle hole is changed, the flow rate of the refrigerant entering the evaporator through the throttle box is regulated and controlled according to actual conditions, the running performance of the unit is improved, the operation is simple, the accuracy is high, and the energy is saved;
2. the application is characterized in that a bypass pipeline is arranged between the condenser and the evaporator, the bypass pipeline is communicated with two sides of the throttle box, the bypass pipeline is provided with the bypass valve, and the bypass pipeline is used as a standby pipeline, so that when equipment such as a pressure reducing valve and a steam trap is damaged or needs to be replaced and maintained, the equipment is isolated, or a main pipeline is closed, the equipment can continue to run by opening the bypass pipeline, the operation is convenient, and the operation is simple for a user and the operability is strong.
Drawings
FIG. 1 is a schematic cross-sectional view of the present application;
FIG. 2 is a first internal perspective view of the present application;
FIG. 3 is a second internal perspective view of the present application;
FIG. 4 is an isometric view of the present application;
FIG. 5 is a block diagram of a baffle according to the present application;
FIG. 6 is an enlarged view of the application at A;
fig. 7 is a flow chart of a control method of the present application.
Reference numerals: 1. a throttle box; 2. a throttle plate; 3. an orifice; 4. a mounting box; 5. a mounting plate; 6. a servo motor; 7. a coupling; 8. a screw rod; 9. a drive nut; 10. a connecting block; 11. a baffle; 12. a slide block; 13. a slide rail; 14. a condenser; 15. an evaporator; 16. a bypass conduit; 17. a bypass valve; 18. a filter; 19. rib plates; 20. a protective cover; 21. a heat radiation hole; 22. a limiting block; 23. a sealing strip; 24. a groove; 25. and (3) a bearing.
Detailed Description
The application will be described in further detail with reference to the drawings and the detailed description.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The terms "front", "rear", "left" and "right" do not denote any order of magnitude, but rather are merely used to facilitate the distinction. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. "further" is a plurality of further occurrences, each recorded in real time over time, at the time when an action is performed.
As shown in fig. 1 to 6, a throttle device of an air conditioning system is arranged between a condensation 14 and an evaporator 15, the throttle device comprises a throttle box 1 and a mounting box 4 arranged at one side of the throttle box 1, a throttle plate 2 is arranged in the throttle box 1, and a throttle hole 3 is arranged on the throttle plate 2; the number of the throttle holes 3 is determined according to the area of the throttle plate 2, and the throttle holes are usually arranged in a plurality, a groove 24 is formed in the side wall of the throttle box 1 connected with the installation box 4, a baffle plate 11 is arranged in the installation box 4, the baffle plate 11 passes through the groove 24 and is arranged in parallel with the throttle plate 2, and one end of the baffle plate 11 is connected with a driving device arranged outside the installation box 4 through a transmission device; the filter 18 is arranged inside the left side and the right side of the throttle plate 2 in the throttle box 1, impurities in the refrigerant are conveniently filtered out by the arrangement of the filter 18 by adopting the technical scheme, the throttle plate 2 is prevented from being blocked by the throttle hole 3 due to the accumulation of the impurities, the flow of the refrigerant is influenced, and the filtering and cleaning functions are achieved.
As shown in fig. 3, a bypass pipe 16 which is communicated with a left filter 18 and a right filter 18 is arranged at the top of the throttle box 1; the bypass pipe 16 is used as a standby pipe, and is used for isolating equipment such as a pressure reducing valve and a steam trap when the equipment is damaged or needs to be replaced and maintained, or closing the main pipe, and opening the bypass pipe 16 can enable the equipment to continue to operate for convenience.
As shown in fig. 1 and 2, the driving device includes: a servo motor 6 arranged on the outer side wall of the installation box 4; the transmission device comprises: the device comprises a screw rod 8, a transmission nut 9, a connecting block 10, a sliding block 12 and a sliding rail 13, wherein the screw rod 8 is fixedly connected with the end part of an output shaft of a servo motor 6 through a coupler 7, the screw rod 8 penetrates through the side wall and the inside of a mounting box 4, the tail end of the screw rod is fixedly arranged on the side wall of the throttle box 1 through a bearing 25, the transmission nut 9 is connected to the screw rod 8 in a threaded transmission manner, the transmission nut 9 is fixedly arranged on the connecting block 10, one end of the connecting block 10 is fixedly arranged on a baffle 11, the sliding blocks 12 are arranged at the upper end and the lower end of the baffle 11, the sliding rail 13 is arranged at the position parallel to the throttle plate 2 in the throttle box 1 and in the mounting box 4, and the sliding block 12 slides in the sliding rail 13; the inner side wall of the mounting box 4 is provided with a limiting block 22, and the limiting block 22 is on the same side with the servo motor 6 and the coupler 7; by adopting the technical scheme, the limiting block 22 plays a role of limiting the connecting block 10, prevents the baffle 11 from sliding out of the throttle box 1, and plays a role of protection; the mounting box 4 one side is provided with the fixing device who is used for installing fixed drive arrangement, fixing device include: the mounting plate 5 is vertically arranged on the mounting box 4 by means of the driving device, and the rib plate 19 is arranged between the mounting box 4 and the mounting plate 5 and is in a tripod shape; by adopting the technical scheme, the arrangement of the rib plates 19 strengthens the firmness between the mounting plate 5 and the mounting box 4, and enhances the working stability of the servo motor 6;
as shown in fig. 4, a protecting cover 20 is arranged on the outer side of the driving device, the protecting cover 20 is fixed on the mounting plate 5, and by adopting the technical scheme, the arrangement of the protecting cover 20 isolates the servo motor 6 from the outside, so as to play a role of protection; the protective cover 20 is provided with a plurality of heat dissipation holes 21; by adopting the technical scheme, the arrangement of the heat dissipation holes 21 prevents the servo motor 6 from accumulating working heat for a long time, burns out the servo motor 6, plays a role in protection, and prolongs the service life of the servo motor 6; a sealing strip 23 is arranged in the groove 24, and the sealing strip 23 is tightly contacted with the baffle 11; by adopting the above technical scheme, the arrangement of the sealing strip 23 prevents the refrigerant from flowing out from the gap between the throttle box 1 and the baffle 11, thereby playing a sealing role.
The throttling device of the application firstly compresses a gaseous refrigerant into a high-temperature high-pressure liquid refrigerant by an air conditioner compressor, then the liquid refrigerant is conveyed into a condenser 14, the liquid refrigerant becomes a normal-temperature high-pressure liquid refrigerant after heat dissipation in the condenser 14, and then the liquid refrigerant is conveyed into a throttle box 1; the liquid refrigerant passes through the filter 18, impurities in the refrigerant are filtered out, and the filtered refrigerant enters the interior of the throttle box 1, if the temperature reduction range needs to be increased, the flow rate of the refrigerant entering the evaporator 15 needs to be increased.
As shown in fig. 7, the present application further provides a throttle control method of an air conditioning system, which specifically includes the following steps:
71. firstly, starting a compressor;
72. at the same time, the temperature sensor/sensor starts working;
73. then, the temperature sensor detects the temperature of the tuyere in real time and transmits the tuyere temperature to the receiving module through the temperature transmitter;
74. then, the receiving module transmits the detected temperature to the central processing unit;
75. the central processing unit processes and calculates the temperature detected by the temperature sensor, and when the temperature difference calculated by the central processing unit is lower than or equal to a preset value, the central processing unit sends a signal to the transmission module;
76. the transmission module sends the received result to the controller;
77. at this time, the controller determines whether to raise or lower the temperature, and thereby determines whether the driving device is performing forward or reverse rotation; if warm up is performed, step 78 is performed, and if cool down is performed, step 79 is performed;
78. the servo motor is reversed, the baffle 11 is retreated, the area of the throttle hole 3 on the shielding throttle plate 2 is reduced, the circulation flow of the refrigerant is increased, and the great temperature reduction is realized;
79. the servo motor rotates positively, the baffle 11 advances, the area of the throttle hole 3 on the shielding throttle plate 2 is increased, the circulation flow of the refrigerant is reduced, and the temperature reduction amplitude is reduced, so that the temperature rise is realized.
The temperature sensor/sensor in the control method is of a model pt100, the temperature acquisition range of the temperature sensor pt100 can be between-200 ℃ and +850 ℃, the humidity acquisition range is 0% -100%, the temperature transmitter is a wireless temperature transmitter of a model SWSN-T5, the SWSN-T5 wireless temperature transmitter is a high-precision and low-power-consumption radio transmission type temperature detection instrument, the lithium battery is adopted for supplying power, wiring is not needed, an external power supply is not needed, the trouble of arranging a cable bridge frame of a conventional instrument is omitted, labor and construction cost are saved, the temperature sensor/sensor is an ideal upgrading product of the conventional temperature detection instrument, a receiving module is a connection hub of the temperature transmitter and a central processor, the central processor is an EEPROM data storage and processor, the transmission module is a communication line, and the controller is an air conditioner universal controller; the servo motor can select a universal servo motor in the market according to the size of the system.
In step 78, the servo motor 6 is reversed, the servo motor 6 drives the screw rod 8 to rotate, the screw rod 8 drives the transmission nut 9 to move backwards along the screw rod 8, the connecting block 10 is driven to move backwards, the baffle 11 is driven to slide backwards, the baffle 11 shields the throttle hole 3 on the throttle plate 2 to reduce the area, the flow rate of the refrigerant passing through the throttle hole is increased, the flow rate of the refrigerant entering the evaporator 15 is increased, and the great temperature reduction is realized.
In step 79, the servo motor 6 rotates positively, the servo motor 6 drives the screw rod 8 to rotate, the screw rod 8 drives the transmission nut 9 to move forwards along the screw rod 8, the connecting block 10 is driven to move forwards, the baffle 11 is driven to slide forwards, the baffle 11 shields the throttle hole 3 on the throttle plate 2 to enlarge the area, the flow rate of the refrigerant passing through the throttle hole is reduced, the flow rate of the refrigerant entering the evaporator 15 is reduced, and the temperature reduction amplitude is reduced so as to realize temperature rise.
The refrigerant passes through the throttle box 1, further filters through the filter 18 and enters the evaporator 15, after the liquid refrigerant is transported into the evaporator 15, the space suddenly increases and the pressure is reduced, the liquid refrigerant is vaporized, the gaseous refrigerant can absorb a great amount of heat around, the cooling effect is further achieved, and then the refrigerant is compressed again by the compressor to circulate.
The working principle of the application is as follows: firstly, an air conditioner compressor compresses a gaseous refrigerant into a high-temperature high-pressure liquid refrigerant, then the liquid refrigerant is conveyed into a condenser 14, the refrigerant is cooled in the condenser 14 and then becomes a normal-temperature high-pressure liquid refrigerant, then the liquid refrigerant is conveyed into a throttle box 1, the liquid refrigerant passes through a filter 18, impurities in the refrigerant are filtered out, and the filtered refrigerant enters the throttle box 1;
if the cooling amplitude needs to be increased, the flow rate of the refrigerant entering the evaporator 15 needs to be increased, the servo motor 6 is started to enable the refrigerant to reversely rotate, the servo motor 6 drives the screw rod 8 to rotate, the screw rod 8 drives the transmission nut 9 to move backwards along the screw rod 8, the connecting block 10 is driven to move backwards, the baffle 11 is driven to slide backwards, the area of the baffle 11 shielding the throttle plate 2 is reduced, the flow rate of the refrigerant passing through the throttle hole 3 is increased, the flow rate of the refrigerant entering the evaporator 15 is increased, otherwise, if the cooling amplitude needs to be reduced, the servo motor 6 is enabled to forwardly rotate to drive the baffle 11 to slide forwards, the area of the throttle plate 2 is enlarged, the flow rate of the refrigerant passing through the throttle hole 3 is reduced, and the flow rate of the refrigerant entering the evaporator 15 is reduced;
the refrigerant passes through the throttle box 1, further filters through the filter 18 and enters the evaporator 15, after the liquid refrigerant is transported into the evaporator 15, the space suddenly increases and the pressure is reduced, the liquid refrigerant is vaporized, the gaseous refrigerant can absorb a great amount of heat around, the cooling effect is further achieved, and then the refrigerant is compressed again by the compressor to circulate.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The above description is only a preferred embodiment of the present application, and is not intended to limit the present application in any way. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the disclosed technology. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technology of the present application fall within the protection scope of the present application.
Claims (10)
1. The throttling device of the air conditioning system is characterized in that the throttling device is arranged between a condenser (14) and an evaporator (15), the throttling device comprises a throttling box (1) and an installation box (4) arranged on one side of the throttling box (1), a throttling plate (2) is arranged in the throttling box (1), and a plurality of throttling holes (3) are formed in the throttling plate (2); the side wall of the throttle box (1) connected with the mounting box (4) is provided with a groove (24), a baffle plate (11) is arranged in the mounting box (4), the baffle plate (11) passes through the groove (24) to be arranged in parallel with the throttle plate (2), and one end of the baffle plate (11) is connected with a driving device arranged outside the mounting box (4) through a transmission device; the novel throttle box is characterized in that filters (18) are arranged inside the left side and the right side of the throttle plate (2) in the throttle box (1), a bypass pipeline (16) communicated with the left filter and the right filter (18) is arranged at the top of the throttle box (1), a bypass valve is arranged on the bypass pipeline, and the bypass pipeline is used as a standby pipeline.
2. The throttle device of an air conditioning system according to claim 1, wherein the driving device includes: a servo motor (6) arranged on the outer side wall of the mounting box (4); the transmission device comprises: lead screw (8), drive nut (9), connecting block (10), slider (12) and slide rail (13), lead screw (8) pass through shaft coupling (7) and servo motor (6) output shaft tip fixed connection, lead screw (8) run through lateral wall and inside of install bin (4), the end passes through bearing (25) to be installed and fixes on the lateral wall of choke box (1), screw drive is connected with drive nut (9) on lead screw (8), drive nut (9) are fixed on connecting block (10), connecting block (10) one end fixed set up on baffle (11), both ends are provided with slider (12) about baffle (11), choke box (1) in the position parallel with choke plate (2) and the inside of install bin (4) be provided with slide rail (13), slider (12) slide in slide rail (13).
3. The throttling gear of an air conditioning system according to claim 2, characterized in that the inner side wall of the mounting box (4) is provided with a limiting block (22), and the limiting block (22) is on the same side with the servo motor (6) and the coupler (7).
4. A throttle device of an air conditioning system according to claim 1, characterized in that the mounting box (4) is provided on one side with a fixing device for mounting a stationary driving device, said fixing device comprising: mounting panel (5) and floor (19), mounting panel (5) rely on drive arrangement, set up perpendicularly on mounting box (4), floor (19) set up between mounting box (4) and mounting panel (5), be the tripod form.
5. The throttling gear of an air conditioning system according to claim 4, characterized in that a protective cover (20) is arranged on the outer side of the driving device, the protective cover (20) is fixed on the mounting plate (5), and a plurality of heat dissipation holes (21) are arranged on the protective cover (20).
6. The throttling arrangement of an air conditioning system according to claim 1, characterized in that a sealing strip (23) is arranged inside said groove (24), said sealing strip (23) being in close contact with the baffle (11).
7. A control method of a throttle device of an air conditioning system is characterized in that,
(71) First, the compressor is started up,
(72) At the same time, the temperature sensor/sensor starts working,
(73) Then, the temperature sensor detects the temperature of the tuyere in real time and transmits the tuyere temperature to the receiving module through the temperature transmitter;
(74) Then, the receiving module transmits the detected temperature to the central processing unit;
(75) The central processing unit processes and calculates the temperature detected by the temperature sensor, and when the temperature difference calculated by the central processing unit is lower than or equal to a preset value, the central processing unit sends a signal to the transmission module;
(76) The transmission module sends the received result to the controller;
(77) At this time, the controller determines whether to raise or lower the temperature, and thereby determines whether the driving device is performing forward or reverse rotation; if heating is performed, executing step (78), and if cooling is performed, executing step (79);
(78) The servo motor is reversed, the baffle plate (11) is retreated, the area of a plurality of orifices (3) on the shielding throttle plate (2) is reduced, the circulation flow of the refrigerant is increased, and the great cooling is realized;
(79) The servo motor positively transmits, the baffle (11) advances, the area of a plurality of orifices (3) on the shielding throttle plate (2) is increased, the circulation flow of the refrigerant is reduced, and the temperature reduction amplitude is reduced, so that the temperature rising effect is realized.
8. The control method of a throttle device of an air conditioning system according to claim 7, characterized in that: in the step (78), the servo motor (6) is reversed, the servo motor (6) drives the screw rod (8) to rotate, the screw rod (8) drives the transmission nut (9) to move backwards along the screw rod (8), the connecting block (10) is driven to move backwards, the baffle (11) is driven to slide backwards, the baffle (11) shields the throttle hole (3) on the throttle plate (2) to reduce the area, the flow rate of refrigerant passing through the throttle hole is increased, the flow rate of refrigerant entering the evaporator (15) is increased, and the great cooling is realized.
9. The control method of a throttle device of an air conditioning system according to claim 7, characterized in that: in the step (79), the servo motor (6) rotates positively, the servo motor (6) drives the screw rod (8) to rotate, the screw rod (8) drives the transmission nut (9) to move forwards along the screw rod (8), the connecting block (10) is driven to move forwards, the baffle (11) is driven to slide forwards, the baffle (11) shields the area of the throttling hole (3) on the throttling plate (2) to increase, the flow rate of the refrigerant passing through the throttling hole is reduced, the flow rate of the refrigerant entering the evaporator (15) is reduced, and the temperature reduction amplitude is reduced so as to realize temperature rise.
10. The control method of a throttle device of an air conditioning system according to claim 7, characterized in that: the refrigerant passes through the throttle box (1), further filters through the filter (18) and enters the evaporator (15), after the liquid refrigerant is transported into the evaporator (15), the space suddenly increases and the pressure decreases, the liquid refrigerant is vaporized, the gaseous refrigerant can absorb a large amount of heat around, the cooling effect is further achieved, and then the refrigerant is compressed again by the compressor to circulate.
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| CN201811433331.9A CN109442822B (en) | 2018-11-28 | 2018-11-28 | Throttling device of air conditioning system and control method thereof |
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| CN201811433331.9A CN109442822B (en) | 2018-11-28 | 2018-11-28 | Throttling device of air conditioning system and control method thereof |
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| CN109442822B true CN109442822B (en) | 2023-10-20 |
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| CN215673783U (en) * | 2021-01-28 | 2022-01-28 | 爱法科技(无锡)有限公司 | Refrigeration electronic throttle valve |
| CN113124589A (en) * | 2021-05-28 | 2021-07-16 | 爱法科技(无锡)有限公司 | Electronic multi-stage composite matrix type throttle orifice plate |
| CN113137680A (en) * | 2021-05-28 | 2021-07-20 | 爱法科技(无锡)有限公司 | Refrigeration and heating equipment with variable evaporation temperature and condensation temperature |
| CN113521477B (en) * | 2021-07-15 | 2023-11-21 | 宁波蓝野医疗器械有限公司 | Medical oxygen supply mixing supercharger |
| CN113587507A (en) * | 2021-08-13 | 2021-11-02 | 中国科学院上海技术物理研究所 | Liquid helium temperature zone filtering, throttling and evaporating integrated device |
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