CN113062842B - Single-piston curve cylinder compressed air refrigerating and heating circulation device - Google Patents
Single-piston curve cylinder compressed air refrigerating and heating circulation device Download PDFInfo
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- CN113062842B CN113062842B CN202110238550.7A CN202110238550A CN113062842B CN 113062842 B CN113062842 B CN 113062842B CN 202110238550 A CN202110238550 A CN 202110238550A CN 113062842 B CN113062842 B CN 113062842B
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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)
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention relates to the technical field of thermal power machinery, in particular to a compressed air refrigerating and heating circulating device of a single-piston curve cylinder. The device comprises the curve type air cylinder and the corresponding piston, not only can use mechanical processing, but also can adopt the technical scheme of the U-shaped water tank water piston, has the characteristics of high energy efficiency ratio, large refrigerating capacity, light 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 compressed air refrigerating and heating circulating device with a single-piston curve cylinder.
Background
Nowadays, the refrigeration devices in the field of thermal power machines are increasingly receiving attention from people, people rely more and more on these refrigeration devices in life production, especially, with the improvement of the living standard of people, air conditioners for air temperature regulation have become indispensable devices in life and production of people, at present, 10% to 30% of the electric energy in the whole society is consumed by such refrigeration devices, and due to their higher energy efficiency ratio, the industrial and agricultural fields are also widely used gradually, meanwhile, the efficiency of the refrigeration devices is also greatly focused 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 device 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=29.8 kw/kw of the ideal thermodynamic cycle device is mainly two types of compression refrigeration cycles, namely: the compressed air refrigeration cycle and the compressed vapor refrigeration cycle utilize the characteristic of large vaporization latent heat of the refrigerant, so that the refrigeration capacity of the corresponding refrigeration device is strong, the equipment is light, the energy efficiency ratio is high, the manufacturing cost is low, and the refrigeration device is influenced by the heat transfer temperature difference in the equipment, the imperfect thermodynamic cycle, the friction loss of an air path and the like, but the energy efficiency ratio can still reach 3 to 6 under the rated working condition, thereby the refrigeration device of the cycle becomes the main force of the refrigeration field, and the most main defect is the harm of the refrigerant to the atmosphere.
The compressed air refrigeration cycle uses air as working medium, and completes thermodynamic cycle through four processes of compression, heat release, expansion and heat absorption of the air, the corresponding compression is smaller, the theoretical energy efficiency of the cycle is higher, 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 piston-type and impeller-type compressed air refrigerating circulation device are a compression impeller and an expansion impeller, the compression impeller is used for compressing air through external force, the compressed air enters the expansion impeller after being discharged outwards through a radiator, the expansion impeller releases cold air on one hand and recovers energy on the other hand, so that the circulation is completed, the device has the advantages of strong refrigerating capacity and low energy efficiency ratio of the whole circulation due to the limitation of mechanical efficiency of the compression impeller and the expansion impeller, and the mechanical energy consumed by the compression impeller and the expansion impeller in the circulation process is far greater than the net work required by the circulation, so that even if the impeller with the highest mechanical efficiency nowadays 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, and the refrigerating device is only applied to special fields with high safety requirements.
The piston type compressed air refrigerating circulation equipment mainly consists of a compression cylinder, an expansion cylinder and a radiator, and is characterized by that it utilizes four processes of compression, heat release, expansion and heat absorption of air to implement thermodynamic circulation, and its advantages are small ineffective friction loss, high energy efficiency, and low air quantity per circulation, so that its refrigerating capacity is low, and in order to overcome its disadvantages, recently a "single-piston compressed air refrigerating circulation device" (Chinese patent application number: 202011265074X) is appeared, and a shared piston is placed in the linear cylinder, and the compression cylinder and expansion cylinder are combined into one body, at the same time, in order to increase air circulation quantity, the mechanical force transmission mechanism of piston can be cancelled, and the thermodynamic circulation is indirectly driven by means of external force, so that the diameter and stroke of piston can be greatly raised, and through analysis, the device with 0.4m piston diameter and 0.8m effective stroke, and under the condition of outdoor temperature 35 deg.C, indoor return air temperature 27 deg.C, the theoretical refrigerating energy efficiency ratio of the device is 8.5, and practical energy efficiency ratio is 4.5, and refrigerating capacity is about 1.8 kw. However, this solution also has the following significant drawbacks, one of which is: after the mechanical force transmission mechanism on the piston is canceled, as the piston does not have the self reciprocating oscillation type periodic operation rhythm, an auxiliary energy storage spring has to be added on the piston, so that the arrangement of the energy storage spring makes the device complex and increases the clearance of the cylinder to influence the efficiency of the device, and on the other hand, the elasticity of the energy storage spring is easy to change in operation, the piston is collided with the cylinder in operation, and the durability of the device is influenced; and the second is: the clearance fit requirement between piston and the cylinder is higher, and the clearance is too little, and frictional resistance is big, influences the efficiency of device, and the clearance is too big, can cross gas between compression cylinder and the inflation cylinder, also can influence the efficiency of device, simultaneously, higher machining precision requirement and great machining volume will directly increase device manufacturing cost.
Disclosure of Invention
The invention provides a single-piston curve 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 movement of pistons.
One of the technical schemes of the invention is realized by the following measures: a single-piston curve cylinder comprises a cylinder, a piston and four air valves arranged on two end covers of the cylinder, wherein the cylinder is a curve cylinder.
The following are further optimizations and/or improvements to one of the above-described inventive solutions:
the curve cylinder is semicircular, a guide rail is arranged in the curve cylinder, and the piston is arranged on the guide rail through a bearing.
The curve type air 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: a single-piston curve cylinder compression air refrigerating and heating circulating device comprises a single-piston curve cylinder, wherein an air inlet valve and a first middle air valve are arranged on a left end cover of the cylinder, an air outlet valve and a second middle 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 exhaust pipe, and a middle air passage pipeline is communicated between the first middle air valve and the second middle air valve.
The following is a further optimization and/or improvement of the second technical scheme of the invention:
the heat exchanger is communicated with the middle gas circuit pipeline, a power pipeline is communicated with the middle gas circuit pipeline between the first middle gas valve and the heat exchanger, and a power device and a gas storage tank capable of driving the piston to reciprocate are arranged on the power pipeline.
The middle gas circuit pipeline is provided with a water collecting tank, a gas-water separator is arranged in the water collecting tank, a power pipeline is communicated between the middle gas circuit pipeline between the water collecting tank and the second middle gas valve and the exhaust pipe, and a power device capable of driving the piston to reciprocate is arranged on the power pipeline.
The power equipment adopts a power fan.
The invention uses gravity to make the piston move continuously along the curve cylinder, uses four air valves arranged on the end covers of the two ends of the curve cylinder to open and close in rhythm, and uses external power to compress, release heat and expand air to absorb heat to complete thermodynamic cycle, the curve cylinder and the corresponding piston can use mechanical processing, and can also adopt the technical proposal of U-shaped water tank water piston, which has the characteristics of high energy efficiency ratio, large refrigerating capacity, light structure, low 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.
Drawings
Fig. 1 is a schematic diagram of the principle of the semicircular cylinder in the refrigeration working condition of the invention.
FIG. 2 is a schematic diagram of the present invention in the refrigeration mode of a U-shaped cylinder ("U" sink cylinder).
Fig. 3 is a schematic diagram of the principle of the semicircular cylinder in the dehumidifying and heating or drying cycle working condition of the invention.
Fig. 4 is a schematic diagram of a heat exchanger with a built-in U-shaped water tank cylinder according to the invention.
The codes in the drawings are respectively: the air conditioner comprises a semicircular air cylinder 1, a piston 2, an air inlet valve 3, an intermediate air valve 4, an air outlet valve 5, an intermediate air valve No. two, a heat exchanger 7, an anti-collision energy storage device 8, a guide rail 9, a user room 10, an air storage tank 11, a power fan 12, a U-shaped water tank air cylinder 13, a water piston 14, a water collecting air tank 15, a built-in heat exchanger 16, a power pipeline 17, a compression cavity 18, an expansion cavity 19, an air inlet pipe 20, an intermediate air passage pipeline 21 and an exhaust pipe 22.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: 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 examples:
as shown in fig. 1 to 4, the single-piston curve cylinder comprises a cylinder, a piston (2) and four air valves arranged on two end covers of the cylinder, wherein the cylinder is a curve cylinder.
The curvilinear cylinder divides the cylinder into an expansion chamber (19) and a compression chamber (18) by a common piston (2).
The following are further optimizations and/or improvements to the single piston curve cylinder described above:
as shown in fig. 1 and 3, the curve cylinder is semicircular, a guide rail (9) is arranged in the curve cylinder, and the piston (2) is arranged 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 the swing offset of the piston (2) is avoided.
As shown in fig. 2 and 4, the curve type cylinder is U-shaped, and the piston is a water piston (14).
As shown in fig. 4, a built-in heat exchanger (16) is provided in the cylinder near the left end of the cylinder.
When the built-in heat exchanger (16) is arranged in the cylinder, air is compressed by the compression cavity (18) and is subjected to heat exchange through the built-in heat exchanger (16), so that the temperature of the air in the compression cavity (18) is reduced, and the use or the non-use of the external heat exchanger (7) is reduced as much as possible.
As shown in figures 1 and 3, anti-collision energy storage devices (8) are respectively arranged on the inner sides of the stroke end points at the two ends of the cylinder.
The anti-collision energy storage device (8) can adopt a compression spring, a U-shaped pipe which extends to the outer side and is communicated with the air cylinder, and the like. The size of the U-shaped pipe is far smaller than that of the air cylinder, and the U-shaped pipe is selected according to actual working conditions.
The anti-collision energy storage device (8) has two functions, namely, the anti-collision energy storage device (8) at the left end is required to store a certain amount of energy for the piston (2) to overcome the friction resistance in the air inlet/exhaust stroke, because more air can enter the expansion cavity (19) only when the power fan (12) is adopted to drag, so that the piston (2) obtains the surplus energy.
The single-piston curve cylinder compressed air refrigerating and heating circulating device comprises the single-piston curve cylinder, wherein an air inlet valve (3) and a first middle air valve (4) are arranged on a left end cover of the cylinder, an air outlet valve (5) and a second 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 air outlet valve (4) is communicated with an exhaust pipe (22), and a middle air passage pipeline (21) is communicated between the first middle air valve (5) and the second 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 no cylinder internal resistance exists, the piston (2) is driven to continuously reciprocate along the curve cylinder and has a fixed oscillation period, and the device utilizes the characteristic to complete the compression, heat release, expansion and heat absorption processes of air by rhythmically opening and closing the air inlet valve (3), the air outlet valve (5), the first intermediate air valve (4) and the second intermediate air valve (6) and assisting the power fan (12) to provide energy required by circulation. The piston (2) is subjected to two strokes of compression/expansion and intake/exhaust, completing a complete thermodynamic cycle. 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 air cylinder.
The following is a further optimization or/and improvement of the single-piston curve cylinder compressed air refrigerating and heating circulation device:
the intermediate gas circuit pipeline (21) is communicated with a heat exchanger (7), the intermediate gas circuit pipeline (21) between the first intermediate gas valve (4) and the heat exchanger (7) is communicated with a power pipeline (17), and the power pipeline (17) is provided with a power device and a gas storage tank (11) which can drive a piston to reciprocate.
The water collecting tank (15) is arranged on the intermediate gas path pipeline (21), the gas-water separator is arranged in the water collecting tank (15), the power pipeline (17) is communicated between the intermediate gas path pipeline (21) between the water collecting tank (15) and the second intermediate gas valve (6) and the exhaust pipe (22), and the power equipment capable of driving the piston to reciprocate is arranged on the power pipeline (17).
The power equipment adopts a power fan (12).
Example 1: as shown in figure 1, the compressed air refrigerating and heating circulation device with the single-piston curve cylinder is used for refrigerating, and the cylinder adopts a semicircular cylinder (1) and the refrigerating principle is as follows:
in the refrigeration working condition, the middle gas circuit pipeline (21) is always in a positive pressure state,
the specific circulation process is as follows: starting a compression/expansion stroke, wherein air in a compression cavity (18) is at atmospheric pressure, a piston (2) is positioned at a right dead center of a cylinder, a second intermediate air valve (6) is opened, the piston (2) is accelerated to move left under the action of pressure difference, so that the volume of the compression cavity (18) is reduced, the temperature and the pressure of air in the compression cavity (18) are increased after being pressed, meanwhile, pressure gas cooled by a heat exchanger (7) enters an expansion cavity (19), after the pressure of the two cavities is balanced, a first intermediate air valve (4) is opened, high-temperature high-pressure gas in the compression cavity (18) enters the heat exchanger (7) to be cooled, when the piston (2) moves to a certain preset position, the second intermediate air valve (6) is closed, the piston (2) moves to the left dead center continuously by virtue of stored kinetic energy, the air in the compression cavity (18) enters the heat exchanger (7) at the moment, the air in the expansion cavity (19) is reduced to the atmospheric pressure due to the pressure, the temperature is reduced along with the pressure, the first intermediate air valve (4) is closed, and the compression/expansion stroke is ended;
the intake/exhaust stroke starts, the piston (2) is at the left dead center of the cylinder, the exhaust valve (5) and the intake valve (3) are opened at this time, the compression chamber (18) sucks hot air in the user chamber (10) as the piston (2) moves rightward, cold air in the expansion chamber (19) enters the user chamber (10), the compression chamber (18) sucks hot air in the user chamber (10) as the piston (2) moves to the right dead center, cold air in the expansion chamber (19) is fully introduced into the user chamber (10), the exhaust valve (5) and the intake valve (3) are closed, and the intake/exhaust stroke is ended.
The user chamber (10) is cooled by this continuous circulation.
Example 2: as shown in figure 2, when the single-piston curve cylinder compressed air refrigerating and heating circulation device is used for refrigerating, a U-shaped cylinder, namely a U-shaped water tank cylinder (13) is adopted, a water piston (14) is formed by injecting water into the U-shaped cylinder, the U-shaped water tank cylinder (13) acts like a semicircle cylinder, the water piston (14) acts like a piston, and after being driven, the water piston (14) continuously reciprocates along the U-shaped water tank cylinder (13) and has a self-fixed oscillation period. Because the structures of the U-shaped water tank cylinder (13) and the water piston (14) are very simple, and mechanical processing is not needed in the manufacturing process, the device 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 materials with smaller roughness coefficient in the prior art, the in-process 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 in detail.
Example 3: as shown in fig. 3, when the single-piston curve cylinder compressed air refrigerating and heating circulation device is used for dehumidifying and heating or drying circulation working conditions, compared with the embodiment 1, the water collection gas tank (15) is used for replacing the heat exchanger (7) and is in heating working conditions, the middle gas path pipeline (21) is always in a negative pressure state, and in operation, the power fan (12) pumps air in the water collection gas tank (15) to a set negative pressure.
Starting the compression/expansion stroke, the piston (2) is positioned 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 at the moment, under the action of pressure difference, the piston (2) accelerates to the right, the expansion cavity (19) sucks wet air in the user chamber (10), the air pressure of the compression cavity (18) increases, the temperature rises, when the air pressure is equal to the atmospheric pressure, the air outlet valve (5) is opened, the dry hot air in the compression cavity (18) enters the user chamber (10), when the piston (2) moves to a certain preset position, the air inlet valve (3) is closed, the air in the expansion cavity (19) is reduced to the preset negative pressure due to the pressure, the vapor water in the wet air is condensed into fog-state water drops along with the temperature falling, a large amount of latent heat is released, the piston (2) moves to the right dead center by virtue of stored kinetic energy, at the moment, the volume of the compression cavity (18) is zero, the air outlet valve (5) is closed, and the compression/expansion is ended;
the intake/exhaust stroke starts, the piston (2) is at the right dead center, the first intermediate air valve (6) 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 collection tank (15) along with the leftward movement of the piston (2) along the semi-circular cylinder, the water is converged into liquid water, the negative pressure dry air is gradually led into the compression cavity (18), and the first intermediate air valve and the second intermediate air valve (6) are closed when the piston (2) runs at the left dead center, so that the intake/exhaust stroke is ended.
The water collection gas tank (15) and the corresponding middle gas path pipeline (21) are in a low-temperature negative pressure state in operation, a heat insulation material is needed to be additionally arranged, and a gas-water separation facility (such as a gas-water separator) is arranged in the water collection gas tank (15).
In many places, the compressed air heating circulation device is adopted to remove the steam water in the air and increase the temperature of the environment, the circulated heat is derived from the latent heat of the steam water in the wet air, and the processes of absorbing and releasing heat are completed in the cylinder without an additional heat exchanger (7), so that the device is greatly simplified, and the extremely high energy efficiency ratio is obtained. When the heat regenerator is additionally arranged between the air inlet pipe (20) and the air outlet pipe (22), water can be directly condensed from air, and the extremely high energy efficiency ratio can be obtained.
Example 4: as shown in fig. 4, in the single-piston curve cylinder compressed air refrigerating and heating circulation device, on the basis of embodiment 2, a heat exchanger (16) is built in a U-shaped water tank cylinder (13), 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 the U-shaped water tank, so that air is compressed while being compressed in the compression cavity (18), and heat is released, so that compression work and net work required by circulation are reduced, and the efficiency ratio of circulation is further improved. When a sufficiently powerful built-in heat exchanger (16) is used, the heat exchanger (7) can also be reduced or eliminated, as is required in practice by corresponding calculations and economic comparisons.
In summary, the device utilizes gravity to make the piston move continuously and reciprocally along the curve cylinder, and the four air valves arranged on the end covers at the two ends of the curve cylinder are opened and closed in a rhythmic manner, and the external power is used for compressing, releasing heat, expanding and absorbing heat to complete thermodynamic cycle, so that the curve cylinder and the corresponding piston can be mechanically processed, and the technical scheme of the U-shaped water tank water piston can be adopted.
The technical characteristics form the embodiment of the invention, have stronger adaptability and implementation effect, and can increase or decrease unnecessary technical characteristics according to actual needs so as to meet the requirements of different situations.
Claims (2)
1. A single-piston curve cylinder compressed air refrigerating and heating circulation device using a single-piston curve cylinder is characterized by comprising a cylinder, a piston and four air valves arranged on two end covers of the cylinder, wherein the cylinder is a curve cylinder; the curve type cylinder is semicircular, a guide rail is arranged in the curve type cylinder, and the piston is arranged on the guide rail through a bearing; an anti-collision energy storage device is respectively arranged on the inner sides of the stroke end points at the two ends of the air cylinder; an air inlet valve and a first intermediate air valve are arranged on the left end cover of the air cylinder, an air outlet valve and a second intermediate air valve are arranged on the right end cover of the air cylinder, the air inlet valve is communicated with an air inlet pipe, the air outlet valve is communicated with an exhaust pipe, and an intermediate air passage pipeline is communicated between the first intermediate air valve and the second intermediate air valve; the middle gas circuit pipeline is provided with a water collecting tank, a gas-water separator is arranged in the water collecting tank, a power pipeline is communicated between the middle gas circuit pipeline between the water collecting tank and the second middle gas valve and the exhaust pipe, and a power device capable of driving the piston to reciprocate is arranged on the power pipeline.
2. The single-piston curve cylinder compressed air refrigerating and heating cycle device according to claim 1, wherein the power equipment adopts a power fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110238550.7A CN113062842B (en) | 2021-03-04 | 2021-03-04 | Single-piston curve cylinder compressed air refrigerating and heating circulation device |
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| CN202110238550.7A CN113062842B (en) | 2021-03-04 | 2021-03-04 | Single-piston curve cylinder compressed air refrigerating and heating circulation device |
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| CN113062842A CN113062842A (en) | 2021-07-02 |
| CN113062842B true CN113062842B (en) | 2023-06-13 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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