CN113062842A - Single-piston curved cylinder compressed air refrigerating and heating circulating device - Google Patents
Single-piston curved cylinder compressed air refrigerating and heating circulating device Download PDFInfo
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- CN113062842A CN113062842A CN202110238550.7A CN202110238550A CN113062842A CN 113062842 A CN113062842 A CN 113062842A CN 202110238550 A CN202110238550 A CN 202110238550A CN 113062842 A CN113062842 A CN 113062842A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B31/00—Free-piston pumps specially adapted for elastic fluids; Systems incorporating such pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0011—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons liquid pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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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
- F25B31/00—Compressor arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention relates to the technical field of thermal power machinery, in particular to a single-piston curved cylinder compressed air refrigerating and heating circulating device which comprises a cylinder, a piston and four air valves arranged on two end covers of the cylinder, wherein the cylinder is a curved cylinder. The device comprises a curved cylinder and a corresponding piston, can be machined, can also adopt the technical scheme of a U-shaped water tank water piston, has the characteristics of high energy efficiency ratio, large refrigerating capacity, light and handy structure, low manufacturing cost, safety and environmental protection, and is suitable for various places such as air temperature regulation, dehumidification, heating, water quantity in condensed water air, drying and the like.
Description
Technical Field
The invention relates to the technical field of thermal power machinery, in particular to a single-piston curved cylinder compressed air refrigerating and heating circulating device.
Background
Nowadays, refrigeration devices in the field of thermal power machinery are more and more emphasized by people, people rely more and more on the refrigeration devices in life and production, especially, along with the improvement of living standard of people, air conditioners for air temperature regulation become indispensable equipment in life and production of people, at present, 10% to 30% of electric energy of the whole society is consumed by the refrigeration devices, because of high energy efficiency ratio, the equipment is gradually and widely used in the field of industry and agriculture, meanwhile, the efficiency of the refrigeration devices is also greatly concerned by people, and strict limitation regulations are put forward on the minimum energy efficiency ratio EER or COP of the produced refrigeration devices.
The ideal thermodynamic cycle for a compression refrigeration unit is a reverse carnot cycle, the energy efficiency ratio of which depends on the temperature of the high and low temperature heat sources, such as: when the indoor air temperature is 25 ℃ and the outdoor air temperature is 35 ℃, the energy efficiency ratio EER of the ideal thermodynamic cycle device is =29.8kw/kw, and the compression refrigeration cycle mainly has two forms, namely: the refrigeration device comprises a compressed air refrigeration cycle and a compressed vapor refrigeration cycle, wherein the compressed vapor refrigeration cycle utilizes the characteristic of large latent heat of vaporization of a refrigerant, so that the corresponding refrigeration device has strong refrigeration capacity, light equipment, high energy efficiency ratio and low manufacturing cost, and the energy efficiency ratio can still reach 3 to 6 under rated working conditions although the refrigeration device is influenced by heat transfer temperature difference in the equipment, imperfect thermodynamic cycle, friction loss of an air path and the like, so that the refrigeration device of the cycle becomes a prime force in the refrigeration field, and the main defect of the refrigeration device is that the refrigerant damages the atmospheric environment.
The compressed air refrigeration cycle has the advantages that the working medium is air, the thermodynamic cycle is completed through four processes of compression, heat release, expansion and heat absorption of the air, the corresponding compression ratio is small, the theoretical energy efficiency of the cycle is high, the requirements of low-temperature users and high-temperature users can be met by adopting a regenerative cycle mode, and the whole cycle process is environment-friendly and safe. There are currently two main mechanisms to implement this thermodynamic cycle, namely: the main components of the impeller type compressed air refrigeration cycle device are a compression impeller and an expansion impeller, the compression impeller completes the compression of air through external force, the compressed air enters the expansion impeller after being externally released heat through a radiator, the expansion impeller releases cold air on one hand and recovers energy on the other hand, thereby completing the circulation, which has the advantages that the refrigerating capacity of the device is strong, the defects are limited by the mechanical efficiency of the compression impeller and the expansion impeller, the energy efficiency ratio of the whole circulation is not high, the mechanical energy consumed by the compression impeller and the expansion impeller in the circulation process is far more than the net work required by the circulation, therefore, even if the impeller with the highest mechanical efficiency is adopted, the energy efficiency ratio EER of the refrigerating device is generally between 1.5 and 2.0, and is difficult to exceed 3.0, this disadvantage makes such a refrigeration device usable only in special places where safety requirements are high.
The piston type compressed air refrigeration cycle equipment is mainly formed from compression cylinder, expansion cylinder and radiator, and is characterized by that it utilizes four processes of compression, heat-releasing, expansion and heat-absorbing of air to implement thermodynamic cycle, and its advantages are small ineffective friction loss, high energy efficiency and small air quantity of every cycle, so that its refrigeration capacity is low, and in order to overcome its disadvantages, a "single-piston compressed air refrigeration cycle equipment" (Chinese patent application No. 202011265074X) is recently appeared, and it arranges a shared piston in the linear cylinder, and combines the compression cylinder and expansion cylinder into one, at the same time, in order to increase air circulation quantity it also can cancel the mechanical force-transferring mechanism of piston, and utilizes external force to indirectly drive thermodynamic cycle to make it implement repeated movement so as to greatly raise diameter and stroke of piston, the device with the piston diameter of 0.4m and the effective stroke of 0.8m has the theoretical refrigeration energy efficiency ratio of 8.5, the actual energy efficiency ratio of 4.5 and the refrigeration capacity of about 1.8kw under the conditions of the outdoor temperature of 35 ℃, the indoor return air temperature of 27 ℃ and the cold air temperature of 11 ℃. However, this solution also has the following obvious disadvantages, one of which is: after a mechanical force transmission mechanism on the piston is cancelled, because the piston does not have a self-reciprocating oscillation type periodic operation rhythm, an auxiliary energy storage spring has to be added on the piston for this purpose, the arrangement of the energy storage spring makes the device complicated and increases the residual capacity gap of the cylinder, thus influencing the efficiency of the device, and on the other hand, when the energy storage spring is in operation, the elasticity is easy to change, thus causing the cylinder collision of the piston in operation and influencing the durability of the device; the second is that: the clearance fit between piston and the cylinder requires highly, and the clearance undersize, and frictional resistance is big, influences the efficiency of device, and the clearance is too big, can be stricken between compression cylinder and the expansion cylinder, also can influence the efficiency of device, and meanwhile, higher machining precision requires and great machining volume, will directly increase device manufacturing cost.
Disclosure of Invention
The invention provides a single-piston curved cylinder compressed air refrigerating and heating circulating device, which overcomes the defects of the prior art and has the advantages of high energy efficiency ratio, large refrigerating capacity and free reciprocating motion of a piston.
One of the technical schemes of the invention is realized by the following measures: a single-piston curved cylinder comprises a cylinder, a piston and four air valves arranged on two end covers of the cylinder, wherein the cylinder is a curved cylinder.
The following is a further optimization or/and improvement of one of the above-mentioned technical solutions of the invention:
the curved cylinder is semicircular, a guide rail is arranged in the curved cylinder, and the piston is arranged on the guide rail through a bearing.
The curve cylinder is U-shaped, and the piston is a water piston.
And a built-in heat exchanger is arranged in the cylinder close to the left end of the cylinder.
And anti-collision energy storage devices are respectively arranged on the inner sides of the stroke end points at the two ends of the cylinder.
The second technical scheme of the invention is realized by the following measures: the utility model provides an including one of technical scheme single piston curve jar compressed air refrigeration heating cycle device of single piston curve jar, has arranged admission valve and middle pneumatic valve No. one on the left end lid of cylinder, has arranged discharge valve and middle pneumatic valve No. two on the right-hand member lid of cylinder, and the admission valve intercommunication has the intake pipe, and discharge valve intercommunication has the blast pipe, and the intercommunication has middle gas circuit pipeline between pneumatic valve in the middle of an and the middle pneumatic valve No. two.
The following is further optimization or/and improvement of the second technical scheme of the invention:
the middle gas path pipeline is communicated with a heat exchanger, the middle gas path pipeline between the first middle gas valve and the heat exchanger is communicated with a power pipeline, and the power pipeline is provided with power equipment and a gas storage tank which can drive the piston to reciprocate.
The middle gas circuit pipeline is provided with a water collecting gas tank, a gas-water separator is arranged in the water collecting gas tank, a power pipeline is communicated between the middle gas circuit pipeline between the water collecting gas tank and the second middle gas valve and the exhaust pipe, and the power pipeline is provided with power equipment capable of driving the piston to reciprocate.
The power equipment adopts a power fan.
The invention uses gravity to make the piston move back and forth along the curve cylinder, and uses four air valves on the end covers of the curve cylinder to compress, release heat, expand and absorb heat to complete the heat circulation, and uses mechanical process and U-groove water piston to adjust the air temperature, remove humidity, heat, condense the water quantity of water and dry.
Drawings
FIG. 1 is a schematic diagram of the principle of the semicircular cylinder under the refrigeration working condition.
FIG. 2 is a schematic diagram of the principle of the U-shaped cylinder (U-shaped water tank cylinder) of the present invention under the refrigeration condition.
FIG. 3 is a schematic diagram of the semi-circular cylinder of the present invention under a dehumidification heating or drying cycle.
FIG. 4 is a schematic diagram of the principle of the built-in heat exchanger of the U-shaped water tank cylinder.
The codes in the figures are respectively: 1 is semicircle type cylinder, 2 is the piston, 3 is the admission valve, 4 is middle pneumatic valve in the middle of the first number, 5 is discharge valve, 6 is middle pneumatic valve in the middle of the second number, 7 is the heat exchanger, 8 is crashproof energy memory, 9 is the guide rail, 10 is the user's room, 11 gas holders, 12 is power fan, 13 is "U" basin cylinder, 14 is the water piston, 15 is the water collecting tank, 16 is built-in heat exchanger, 17 is the power pipeline, 18 is the compression chamber, 19 is the expansion chamber, 20 is the intake pipe, 21 is middle gas circuit pipeline, 22 is the blast pipe.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention is further described below with reference to the following examples:
as shown in the attached figures 1 to 4, the single-piston curved cylinder comprises a cylinder, a piston (2) and four air valves arranged on two end covers of the cylinder, wherein the cylinder is a curved cylinder.
The curved cylinder is divided into an expansion chamber (19) and a compression chamber (18) by a common piston (2).
The following are further optimizations or/and improvements to the single piston curved cylinder described above:
as shown in fig. 1 and 3, the curved cylinder is semicircular, a guide rail (9) is arranged in the curved cylinder, and the piston (2) is mounted on the guide rail (9) through a bearing.
The semicircular cylinder (1) can enable the piston (2) to reciprocate in the cylinder by utilizing gravity; the guide rail (9) guides the piston (2) to run, and avoids the swing offset of the piston (2).
As shown in the attached figures 2 and 4, the curve-shaped cylinder is U-shaped, and the piston is a water piston (14).
As shown in FIG. 4, an internal heat exchanger (16) is provided in the cylinder near the left end of the cylinder.
Cooling water circulation in the built-in heat exchanger (16), when the built-in heat exchanger (16) is arranged in the cylinder, air is compressed while being compressed in the compression cavity (18), heat is exchanged through the built-in heat exchanger (16), the temperature of the air in the compression cavity (18) is reduced, and the use or non-use of the external heat exchanger (7) is reduced as much as possible.
As shown in the attached figures 1 and 3, anti-collision energy storage devices (8) are respectively arranged on the inner sides of the stroke end points of the two ends of the cylinder.
The anti-collision energy storage device (8) can adopt a compression spring, a U-shaped pipe extending to the outer side and communicated with the cylinder and the like. The size of the U-shaped pipe is far smaller than that of the air cylinder and is selected according to actual working conditions.
The anti-collision energy storage device (8) has two functions, one is to prevent the piston (2) from directly colliding the cylinder when running to the dead point, and the other is to enable more air to enter the expansion cavity (19) only during the compression/expansion stroke when the device is dragged by the power fan (12), so that the piston (2) obtains surplus energy, and therefore the anti-collision energy storage device (8) at the left end is required to store a certain amount of energy to enable the piston (2) to overcome the friction resistance in the air intake/exhaust stroke.
The single-piston curve cylinder compressed air refrigerating and heating circulating device comprises the single-piston curve cylinder, an air inlet valve (3) and a middle air valve (4) are arranged on a left end cover of the cylinder, an exhaust valve (5) and a middle air valve (6) are arranged on a right end cover of the cylinder, the air inlet valve (3) is communicated with an air inlet pipe (20), the exhaust valve (4) is communicated with an exhaust pipe (22), and a middle air pipeline (21) is communicated between the middle air valve (5) and the middle air valve (6).
When the device is used, the air inlet end of the air inlet valve (3) is communicated with the user chamber (10) through the air inlet pipe (20), and the air outlet end of the air outlet valve (5) is communicated with the user chamber (10) through the air outlet pipe (22). When there is no resistance in the cylinder, the piston (2) will reciprocate along the curve cylinder and has fixed oscillation period after being driven, the device uses the characteristic that the air inlet valve (3), the air outlet valve (5), the first intermediate air valve (4) and the second intermediate air valve (6) are opened and closed in a rhythmic way, and the power fan (12) is used for providing energy required by circulation to complete the processes of compressing, releasing heat, expanding and absorbing heat of air. To complete a complete thermodynamic cycle, the piston (2) must perform two strokes, compression/expansion and intake/exhaust. The air inlet valve (3), the first intermediate air valve (4), the exhaust valve (5) and the second intermediate air valve (6) can be fixedly arranged on the end cover of the curve type cylinder.
The following is further optimization or/and improvement on the single-piston curved cylinder compressed air refrigerating and heating circulating device:
the middle gas circuit pipeline (21) is communicated with a heat exchanger (7), a power pipeline (17) is communicated with the middle gas circuit pipeline (21) between the first middle gas valve (4) and the heat exchanger (7), and the power pipeline (17) is provided with power equipment and a gas storage tank (11) which can drive the piston to reciprocate.
The middle gas circuit pipeline (21) is provided with a water collecting tank (15), a gas-water separator is arranged in the water collecting tank (15), a power pipeline (17) is communicated between the middle gas circuit pipeline (21) between the water collecting tank (15) and the second middle gas valve (6) and the exhaust pipe (22), and the power pipeline (17) is provided with power equipment capable of driving the piston to reciprocate.
The power equipment adopts a power fan (12).
Example 1: as shown in the attached figure 1, when the single-piston curved cylinder compressed air refrigerating and heating circulating device is used for refrigerating, a cylinder of the single-piston curved cylinder compressed air refrigerating and heating circulating device adopts a semicircular cylinder (1), and the refrigerating principle is as follows:
when in refrigeration working condition, the middle gas circuit pipeline (21) is always in a positive pressure state,
the specific cycle process is as follows: at the beginning of a compression/expansion stroke, air in a compression cavity (18) is at atmospheric pressure, a piston (2) is positioned at the right dead center of a cylinder, after a second intermediate air valve (6) is opened, the piston (2) accelerates to the left under the action of pressure difference, so that the volume of the compression cavity (18) is reduced, the temperature and the pressure of the air in the compression cavity (18) are increased after being pressurized, meanwhile, pressure gas cooled by a heat exchanger (7) enters an expansion cavity (19), after the pressures of the two cavities are balanced, a first intermediate air valve (4) is opened, high-temperature and high-pressure gas in the compression cavity (18) enters the heat exchanger (7) for cooling, when the piston (2) runs to a certain preset position, the second intermediate air valve (6) is closed, the piston (2) continues to run to the left dead center by means of stored kinetic energy, at the moment, all gas in the compression cavity (18) enters the heat exchanger (7), and the air in the expansion cavity (19) is reduced to the atmospheric, the temperature is reduced, the first intermediate air valve (4) is closed, and the compression/expansion stroke is finished;
the intake/exhaust stroke begins, the piston (2) is at the left dead center of the cylinder, the exhaust valve (5) and the intake valve (3) are opened at the moment, the compression cavity (18) sucks hot air in the user chamber (10) along with the rightward movement of the piston (2), simultaneously, cold air in the expansion cavity (19) enters the user chamber (10), when the piston (2) moves to the right dead center, the compression cavity (18) sucks the hot air in the user chamber (10), the cold air in the expansion cavity (19) is fully led into the user chamber (10), the exhaust valve (5) and the intake valve (3) are closed, and the intake/exhaust stroke is finished.
The circulation is continued, and the user room (10) is refrigerated.
Example 2: as shown in figure 2, when the single-piston curved cylinder compressed air refrigerating and heating cycle device is used for refrigeration, the cylinder of the single-piston curved cylinder compressed air refrigerating and heating cycle device adopts a U-shaped cylinder, namely a U-shaped water tank cylinder (13), a water piston (14) is formed by injecting water into the U-shaped cylinder, the U-shaped water tank cylinder (13) has the same function as a semi-circular cylinder, the water piston (14) is similar to a piston, and after the water piston (14) is driven, the water piston can continuously reciprocate along the U-shaped water tank cylinder (13) and has a fixed oscillation period. Because the structure of the U-shaped water tank cylinder (13) and the water piston (14) is very simple, and the manufacturing process does not need machining, the U-shaped water tank cylinder is very suitable for manufacturing high-power compressed air refrigerating/heating equipment, the production cost is greatly reduced, the side wall of the U-shaped water tank cylinder (13) can be made of the existing material with a small roughness coefficient, the on-way resistance of the water piston (14) is reduced, and the energy efficiency ratio of the device is increased.
The refrigeration process is as in embodiment 1 and will not be described.
Example 3: as shown in fig. 3, when the single-piston curved cylinder compressed air refrigerating and heating cycle device is used for dehumidification heating or drying cycle working conditions, compared with embodiment 1, the heat exchanger (7) is replaced by the water collecting gas tank (15) and is in a heating working condition, the intermediate gas circuit pipeline (21) is always in a negative pressure state, and in operation, the power fan (12) pumps air in the water collecting gas tank (15) to a set negative pressure.
At the beginning of the compression/expansion stroke, the piston (2) is at the left dead center of the cylinder, the compression cavity (18) is filled with negative pressure dry air, the air inlet valve (3) is opened, the piston (2) accelerates to the right under the action of pressure difference, the expansion cavity (19) sucks wet air in the user chamber (10), the air pressure of the compression cavity (18) is increased, the temperature is increased, when the pressure is equal to the atmospheric pressure, the exhaust valve (5) is opened, the dry hot air in the compression cavity (18) enters the user chamber (10), when the piston (2) runs to a certain preset position, the air inlet valve (3) is closed, the air in the expansion cavity (19) reduces to the preset negative pressure due to the pressure, the steam in the wet air is condensed into fog-state water drops along with the temperature reduction, a large amount of latent heat is released, the piston (2) runs to the right dead center by means of the stored kinetic energy, the volume of the compression cavity (18) is zero, the exhaust valve (5) is closed, and the compression/expansion is finished;
the air inlet/exhaust stroke begins, the piston (2) is positioned at the right dead center, the first intermediate air valve and the second intermediate air valve (6) are opened at the moment, negative pressure air condensed into fog-state water drops in the expansion cavity (19) enters the water collecting tank (15) along with the leftward movement of the piston (2) along the semicircular cylinder and is gathered into liquid water, negative pressure dry air is gradually led into the compression cavity (18), the first intermediate air valve and the second intermediate air valve (6) are closed when the piston (2) runs at the left dead center, and the air inlet/exhaust stroke is finished.
The water collecting tank (15) and the corresponding middle gas pipeline (21) are in a low-temperature negative pressure state in operation, a heat insulating material needs to be added, and a gas-water separation facility (such as a gas-water separator) is arranged in the water collecting tank (15).
In many places, the vapor water in the air needs to be removed, the temperature of the environment needs to be raised, the heat of circulation is derived from the latent heat of the vapor water in the humid air by adopting the compressed air heating circulation device, the heat absorption and heat release processes are completed in the cylinder, and a heat exchanger (7) is not needed, so that the equipment is greatly simplified, and the extremely high energy efficiency ratio is obtained. When a regenerator is additionally arranged between the air inlet pipe (20) and the air outlet pipe (22), water can be directly condensed from the air, and the extremely high energy efficiency ratio can be obtained.
Example 4: as shown in fig. 4, in the single-piston curved cylinder compressed air refrigerating and heating cycle device, based on embodiment 2, a heat exchanger (16) is arranged in a U-shaped water tank cylinder (13), and the device utilizes the flexible characteristic of a water piston (14) to arrange the built-in heat exchanger (16) in a compression cavity (18) of a U-shaped water tank, so that when air is compressed in the compression cavity (18), the air is compressed and releases heat at the same time, thereby reducing the compression work and the net work required by the cycle, and further improving the efficiency ratio of the cycle. When a sufficiently powerful built-in heat exchanger (16) is used, the heat exchanger (7) can also be reduced or eliminated, and the implementation needs to be determined by corresponding calculations and economic comparisons.
In conclusion, the device utilizes gravity to enable the piston to continuously reciprocate along the curve-shaped cylinder, four air valves arranged on end covers at two ends of the curve-shaped cylinder are opened and closed in a rhythmic mode, and power is supplemented to compress, release heat, expand and absorb heat of air to complete thermodynamic cycle.
The technical characteristics form an embodiment of the invention, which has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (9)
1. A single-piston curved cylinder comprises a cylinder, a piston and four air valves arranged on two end covers of the cylinder, and is characterized in that the cylinder is a curved cylinder.
2. The single piston curved cylinder as claimed in claim 1, wherein the curved cylinder is semi-circular, a guide rail is provided in the curved cylinder, and the piston is mounted on the guide rail through a bearing.
3. The single piston curved cylinder of claim 1, wherein the curved cylinder is U-shaped and the piston is a water piston.
4. A single piston curved cylinder as claimed in claim 3, wherein an internal heat exchanger is provided in the cylinder near the left end of the cylinder.
5. The single-piston curved cylinder as claimed in claim 1, 2, 3 or 4, wherein the inner sides of the stroke end points of the two ends of the cylinder are respectively provided with an anti-collision energy storage device.
6. A single-piston curved cylinder compressed air refrigerating and heating cycle device using the single-piston curved cylinder as claimed in any one of claims 1 to 5, characterized in that an air inlet valve and a first intermediate air valve are arranged on a left end cover of the cylinder, an air outlet valve and a second intermediate air valve are arranged on a right end cover of the cylinder, the air inlet valve is communicated with an air inlet pipe, the air outlet valve is communicated with an air outlet pipe, and an intermediate air pipeline is communicated between the first intermediate air valve and the second intermediate air valve.
7. The single-piston curved cylinder compressed air refrigerating and heating cycle device as claimed in claim 6, wherein the intermediate gas line is communicated with a heat exchanger, the intermediate gas line between the first intermediate gas valve and the heat exchanger is communicated with a power line, and the power line is provided with a power device and an air storage tank which can drive the piston to reciprocate.
8. The single-piston curved cylinder compressed air refrigerating and heating cycle device as claimed in claim 6, wherein the intermediate gas line is provided with a water collecting tank, a gas-water separator is arranged in the water collecting tank, a power line is communicated between the intermediate gas line between the water collecting tank and the second intermediate gas valve and the exhaust pipe, and a power device capable of driving the piston to reciprocate is arranged on the power line.
9. The single-piston curved cylinder compressed air refrigerating and heating cycle device as claimed in claim 7 or 8, wherein the power equipment adopts a power fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238550.7A CN113062842B (en) | 2021-03-04 | 2021-03-04 | Single-piston curve cylinder compressed air refrigerating and heating circulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238550.7A CN113062842B (en) | 2021-03-04 | 2021-03-04 | Single-piston curve cylinder compressed air refrigerating and heating circulation device |
Publications (2)
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| US5195321A (en) * | 1992-03-04 | 1993-03-23 | Clovis Thermal Corporation | Liquid piston heat engine |
| JPH062971A (en) * | 1992-06-22 | 1994-01-11 | Aisin Seiki Co Ltd | Stirling engine integral type compressor |
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| CN2789415Y (en) * | 2004-12-24 | 2006-06-21 | 胡章地 | Cylinder rotary piston differential engine |
| CN1755301A (en) * | 2005-10-20 | 2006-04-05 | 河北农业大学 | Air source heat pump without electric energy consumption |
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| CN104895745A (en) * | 2009-05-22 | 2015-09-09 | 通用压缩股份有限公司 | Compressor and/or expander device |
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| CN103410689A (en) * | 2013-06-21 | 2013-11-27 | 冯智勇 | Solar thermo-acoustic driving power generation system with liquid piston technology |
| CN103982398A (en) * | 2014-05-16 | 2014-08-13 | 冯会春 | Blowing-suction machine with water piston |
| US20180252183A1 (en) * | 2015-03-25 | 2018-09-06 | Sun Orbit Gmbh | Stirling engine and method of using a stirling engine |
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| CN106593798A (en) * | 2016-12-19 | 2017-04-26 | 中国科学院理化技术研究所 | Thermo-acoustic electrical power generation device |
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| CN113062842B (en) | 2023-06-13 |
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