CN113340021A - Refrigeration equipment applied to air conditioner - Google Patents

Refrigeration equipment applied to air conditioner Download PDF

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Publication number
CN113340021A
CN113340021A CN202110583061.5A CN202110583061A CN113340021A CN 113340021 A CN113340021 A CN 113340021A CN 202110583061 A CN202110583061 A CN 202110583061A CN 113340021 A CN113340021 A CN 113340021A
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CN
China
Prior art keywords
refrigerant
connecting pipe
refrigeration
gas
outlet
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CN202110583061.5A
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Chinese (zh)
Inventor
吴旻
吴宜珈
吴霁
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Wuyi University
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Wuyi University
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Priority to CN202110583061.5A priority Critical patent/CN113340021A/en
Priority to US17/360,499 priority patent/US20220381491A1/en
Priority to DE102021120875.0A priority patent/DE102021120875B3/en
Publication of CN113340021A publication Critical patent/CN113340021A/en
Pending legal-status Critical Current

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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
    • F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • 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
    • 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
    • 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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • F25B2339/0446—Condensers with an integrated receiver characterised by the refrigerant tubes connecting the header of the condenser to the receiver; Inlet or outlet connections to receiver
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/13—Economisers
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/07—Exceeding a certain pressure value in a refrigeration component or cycle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Combustion & Propulsion (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention discloses refrigeration equipment applied to an air conditioner, which comprises at least one of R600A, R417A, R410C and R407C; at least one of hydrogen and helium; the evaporator has an inlet and an outlet; the condenser is provided with a condensation cavity, an air inlet, an air outlet and a liquid outlet, and a molecular sieve membrane is arranged in the condensation cavity; one end of the first connecting pipe is connected with the outlet, and the other end of the first connecting pipe is connected with the air inlet; one end of the second connecting pipe is connected with the liquid outlet, and the other end of the second connecting pipe is connected with the inlet; one end of the third connecting pipe is connected with the air outlet, and the other end of the third connecting pipe is connected with the inlet; the air blowing device is communicated with the first connecting pipe; the system pressure of the refrigeration equipment is set to be larger than the saturation pressure of the refrigerant at 40 ℃; the housing, the evaporator and the condenser are mounted in the housing. The refrigeration equipment changes the traditional refrigeration circulation mode, the energy consumption required in the condensation process is lower, so that the production cost of the refrigeration equipment is reduced, the economic benefit is higher, and the refrigeration temperature required by the air conditioner can be met by selecting reasonable refrigerant and decompression gas.

Description

Refrigeration equipment applied to air conditioner
Technical Field
The invention relates to the technical field of refrigeration, in particular to refrigeration equipment applied to an air conditioner.
Background
The traditional refrigeration technology adopts a compressor to compress to realize the condensation of a freezing working medium or adopts liquid to absorb the freezing working medium, and the energy consumption of the two modes is very high.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a refrigeration device applied to an air conditioner, which can realize refrigeration with lower power consumption.
The refrigeration equipment applied to the air conditioner comprises a refrigerant arranged in a pipeline of the refrigeration equipment, wherein the refrigerant comprises at least one of R600A, R417A, R410C and R407C;
the pressure reducing gas is arranged in the pipeline of the refrigeration equipment and comprises at least one of hydrogen and helium;
an evaporator having an inlet and an outlet;
the condenser is provided with a condensation cavity, a gas inlet, a gas outlet and a liquid outlet, a molecular sieve membrane is arranged in the condensation cavity and is arranged between the gas inlet and the gas outlet, and the molecular sieve membrane is used for separating mixed gas consisting of the refrigerant and the pressure-reduced gas;
one end of the first connecting pipe is connected with the outlet, and the other end of the first connecting pipe is connected with the air inlet;
one end of the second connecting pipe is connected with the liquid outlet, and the other end of the second connecting pipe is connected with the inlet;
one end of the third connecting pipe is connected with the air outlet, and the other end of the third connecting pipe is connected with the inlet;
the blowing device is communicated with the first connecting pipe and is used for introducing the mixed gas into the condensation cavity;
the system pressure of the refrigeration equipment is set to be larger than the saturation pressure of the refrigerant at 40 ℃;
the shell is provided with a first installation space and a second installation space, the first installation space is located on the inner side of the wall, the second installation space is located on the outer side of the wall, the evaporator is installed in the first installation space, and the condenser is installed in the second installation space.
The refrigeration equipment applied to the air conditioner provided by the embodiment of the invention at least has the following beneficial effects: the evaporator mixes the liquid refrigerant and the pressure-reducing gas, the surface pressure of the liquid refrigerant is reduced, the liquid refrigerant generates steam and is in a new dynamic balance process, and the evaporation of the refrigerant is realized. And separating the refrigerant and the reduced pressure gas by adopting a molecular sieve membrane, condensing the refrigerant after the refrigerant reaches a certain concentration to form a liquid refrigerant, and refrigerating the liquid refrigerant in the evaporator again. The refrigeration equipment applied to the air conditioner changes the traditional refrigeration circulation mode, the energy consumption required in the condensation process is lower, the production cost of the refrigeration equipment is reduced, the economic benefit is higher, and the refrigeration temperature required by the air conditioner can be met by selecting reasonable refrigerant and decompression gas.
According to some embodiments of the invention, the port of the third connecting pipe extends into the second connecting pipe and protrudes from the inner wall of the second connecting pipe.
According to some embodiments of the invention, the second connecting tube comprises a liquid storage section comprising a number of U-shaped tubes.
According to some embodiments of the invention, the refrigeration appliance further comprises a heat sink for dissipating heat from the condenser.
According to some embodiments of the invention, the heat sink comprises a cooling water pipe wound around an outside of the condenser.
According to some embodiments of the invention, the system pressure of the refrigeration device is set to be twice the saturation pressure of the refrigerant at 40 ℃.
According to some embodiments of the invention, when the refrigerant is R600A, the system pressure of the refrigeration equipment is set to 8 Bar.
According to some embodiments of the invention, when the refrigerant is R417A, the system pressure of the refrigeration equipment is set to 40 Bar.
According to some embodiments of the invention, when the refrigerant is R410C, the system pressure of the refrigeration equipment is set to 40 Bar.
According to some embodiments of the invention, when the refrigerant is R407C, the system pressure of the refrigeration equipment is set to 30 Bar.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic diagram of a refrigeration unit of the present invention;
fig. 2 is a schematic connection diagram of the third connection pipe and the second connection pipe shown in fig. 1;
fig. 3 is an installation schematic diagram of a refrigeration apparatus applied to an air conditioner according to an embodiment of the present invention.
Reference numerals:
101. an evaporator; 102. a condenser; 103. a first connecting pipe; 104. a second connecting pipe; 105. a third connecting pipe; 106. a blower device; 107. a molecular sieve membrane; 108. a liquid storage section; 109. a heat sink;
301. a housing; 302. a wall body.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, a refrigeration apparatus applied to an air conditioner according to an embodiment of the present invention includes an evaporator 101, a condenser 102, a first connection pipe 103, a second connection pipe 104, a third connection pipe 105, and a blowing device 106, wherein the evaporator 101 has an inlet and an outlet; the condenser 102 is provided with a condensation cavity, an air inlet, an air outlet and a liquid outlet, a molecular sieve membrane 107 is arranged in the condensation cavity, the molecular sieve membrane 107 is arranged between the air inlet and the air outlet, and the molecular sieve membrane 107 is used for separating mixed gas; one end of the first connecting pipe 103 is connected with the outlet, and the other end is connected with the air inlet; one end of the second connecting pipe 104 is connected with the liquid outlet, and the other end is connected with the inlet; one end of the third connecting pipe 105 is connected with the air outlet, and the other end is connected with the inlet; the blower 106 communicates with the first connection pipe 103 for introducing the mixed gas into the condensation chamber.
Refrigerant and decompression gas are injected into the refrigerating equipment, and the refrigeration cycle is realized through the cycle conversion of the gaseous state and the liquid state of the refrigerant.
Specifically, the refrigerant in a liquid state and the pressure-reducing gas are mixed in the evaporator 101, and the evaporator 101 provides a space for evaporation at a position where the refrigerant in a liquid state and the pressure-reducing gas start to be mixed, and the mixed position is free from the refrigerant in a gaseous state, that is, the partial pressure of the refrigerant in a gaseous state is zero, so that the refrigerant in a liquid state is necessarily evaporated to form the refrigerant in a gaseous state. In this process, the evaporator 101 absorbs heat from the air to perform cooling.
The gaseous refrigerant and the decompression gas are mixed in the evaporator 101 to form a mixed gas, the mixed gas flows along the system and enters the condenser 102, and the air blowing device 106 is used for introducing the mixed gas into a condensation cavity of the condenser 102. The condensation cavity is internally provided with a molecular sieve membrane 107, which is defined as a novel membrane material capable of realizing molecular sieving, and the novel membrane material has the pore diameter which is equivalent to and uniform with the molecular size, ion exchange performance, high-temperature thermal stability, excellent shape-selective catalytic performance, easy modification and multiple types and different structures for selection. The molecular sieve membrane 107 is arranged to allow the passage of the pressure-reduced gas, while preventing the passage of the refrigerant, and serves to separate the mixed gas.
For example, the refrigerant is selected to be ammonia, the pressure reducing gas is selected to be hydrogen or helium, and the molecular diameter of hydrogen is 0.289 nm, that is, 2.89A. The molecular diameter of helium is 0.26 nm, i.e., 2.6A. The molecular diameter of ammonia gas was 0.444 nm, i.e., 4.44A. Therefore, the molecular sieve membrane 107 of 3A or 4A can be used for effectively separating hydrogen and ammonia gas or helium gas and ammonia gas.
The nature of the liquefaction of the gaseous refrigerant is that the gaseous refrigerant will necessarily liquefy after the relative humidity of the gaseous refrigerant reaches 100%. Therefore, after the mixed gas is separated, only the gaseous refrigerant remains in the middle of the portion of the condensation chamber, or the gaseous refrigerant and the liquid refrigerant exist at the same time, and when the blower device 106 continuously introduces the mixed gas into the condensation chamber of the condenser 102, the gaseous refrigerant is condensed into the liquid refrigerant after the relative humidity of the gaseous refrigerant reaches 100%.
On a microscopic level, evaporation is the process by which liquid molecules leave the liquid surface. Since the molecules in the liquid do random motion constantly, the average kinetic energy of the molecules is adapted to the temperature of the liquid. Due to the random motion and collisions of the molecules, some molecules have a kinetic energy greater than the average kinetic energy at any one time. When the molecules with enough kinetic energy, such as the molecules near the liquid surface, have kinetic energy larger than the work required to overcome the attractive force between the molecules in the liquid during flying, the molecules can fly out of the liquid surface and become vapor of the liquid, which is the evaporation phenomenon. The flying molecules may return to the liquid surface or enter the liquid interior after colliding with other molecules. If more molecules fly out than fly back, the liquid is evaporating. The more molecules in space, the more molecules fly back. When the flying-out molecule equals the flying-back, the liquid is in a saturated state, and the pressure at this time is called the saturation pressure Pt of the liquid at the temperature. At this time, if the number of molecules of the substance in the gaseous state in the space is artificially increased, the number of molecules flying back is larger than that flying out, and thus condensation occurs.
By mixing the liquid refrigerant and the pressure-reduced gas in the evaporator 101, the surface pressure of the liquid refrigerant is reduced, so that the liquid refrigerant generates vapor and is in a new dynamic equilibrium process, thereby evaporating the refrigerant. And then, a molecular sieve membrane 107 is adopted to separate the refrigerant and the pressure-reduced gas, the refrigerant is condensed after reaching a certain concentration to become a liquid refrigerant, and the liquid refrigerant enters the evaporator 101 again for refrigeration. The refrigeration equipment applied to the air conditioner changes the traditional refrigeration circulation mode, and the energy consumption required in the condensation process is lower, so that the production cost of the refrigeration equipment is reduced, and the refrigeration equipment has greater economic benefit.
Referring to fig. 2, in some embodiments, the port of the third connection pipe 105 extends into the second connection pipe 104 and protrudes from the inner wall of the second connection pipe 104. Liquid ammonia enters from the left side, hydrogen enters from the lower side, and the port provided with the third connecting pipe 105 protrudes out of the inner wall of the second connecting pipe 104, so that the possibility that the liquid ammonia flows back into the condenser 102 from the third connecting pipe 105 can be reduced.
According to some embodiments of the present invention, second connecting tube 104 includes a reservoir section 108, and reservoir section 108 includes a number of U-shaped tubes. By providing the U-shaped pipe, more refrigerant can be stored, and the occupied space of the second connection pipe 104 is reduced.
According to some embodiments of the present invention, the refrigeration apparatus further comprises a heat sink 109, the heat sink 109 being configured to dissipate heat from the condenser 102. By providing the heat dissipation device 109, the heat dissipation efficiency of the condenser 102 can be effectively improved, and the condensation efficiency can be further improved.
According to some embodiments of the present invention, the heat sink 109 comprises a cooling water pipe wound around the outside of the condenser 102. The cooling water pipe can utilize a normal-temperature water source, and is convenient to take. It is understood that the heat dissipation device 109 may also be an air cooling device instead of or in combination with a cooling water pipe.
According to some embodiments of the invention, the inlet of the cooling water pipe is higher than the outlet of the cooling water pipe, so that the flow of water flow is facilitated, the flow rate is increased, and the heat exchange is accelerated.
According to some embodiments of the present invention, the gas outlet is located at an upper portion of the condenser 102, the liquid outlet is located at a lower portion of the condenser 102, and the gas inlet is located at a middle portion of the condenser 102. The mass of the pressure-reducing gas is lighter than that of the refrigerant, the pressure-reducing gas will flow upward, and the gas outlet is located at the upper part of the condenser 102 for the pressure-reducing gas to flow out. The liquid outlet is located at the lower portion of the condenser 102 to facilitate the outflow of the liquefied refrigerant.
According to some embodiments of the invention, the condenser 102 comprises a conical guide, the outlet being located at the small end of the conical guide. Through setting up toper guide part, the guide decompression gas flows out from the gas outlet, reduces flow loss.
According to some embodiments of the invention, the blowing device 106 comprises a ventilator. The ventilator does not require as large a compression ratio as a compressor of a conventional refrigeration apparatus, and only introduces the mixed gas into the condenser 102 to effect condensation by concentration change of the refrigerant itself. Of course, the blower device 106 may also be a compressor and may have less power than a conventional compressor.
Referring to fig. 3, it can be understood that the refrigeration apparatus includes a housing 301, and the evaporator 101, the condenser 102 and the air blowing device 106 are all disposed in the housing 301, and in use, the evaporator 101 is installed indoors, and the condenser 102 is installed outdoors, that is, the housing 301 is provided with a first installation space and a second installation space, the first installation space is located inside a wall 302, the second installation space is located outside the wall 302, the evaporator 101 is installed in the first installation space, and the condenser 102 is installed in the second installation space.
Unlike a conventional air conditioner, the refrigerating apparatus is not divided into an indoor unit and an outdoor unit, but is installed in the same casing 301, and only when in use, a part of the casing 301 is located indoors and the other part is located outdoors. Therefore, the refrigerant and the decompression gas can be directly and integrally installed, so that the assembly is avoided, the refrigerant and the decompression gas are refilled, and the installation efficiency is improved.
An Air Conditioner (Air Conditioner) is a device that manually adjusts and controls parameters such as temperature, humidity, and flow rate of ambient Air in a building or structure. Although the basic working principle of the present invention is described above, creative labor is still required to select a solution suitable for an air conditioner, otherwise, the refrigerating temperature may be too high or too low to meet the use requirement of the air conditioner.
Through continued screening and validation, the present invention provides that, in some embodiments, the refrigerant comprises at least one of R600A, R417A, R410C, and R407C, and the reduced-pressure gas comprises at least one of hydrogen and helium.
Referring to the following table, the relationship between system pressure and cold side refrigerant temperature required to use different refrigerants is shown.
Refrigerant Saturation pressure corresponding to 40 deg.C System pressure Cold end refrigeration temperature
R600A 4Bar 8Bar -11 ℃ to 12 DEG C
R417A 20Bar 40Bar -10 ℃ to 12 DEG C
R410C 20Bar 40Bar -12 ℃ to 12 DEG C
R407C 15Bar 30Bar -13 ℃ to 12 DEG C
The working process of the refrigeration equipment applied to the air conditioner in the embodiment of the invention is illustrated by taking the refrigerant R600A and the depressurized gas as hydrogen.
The mixed gas of the R600A gas and hydrogen gas is introduced into the condensation chamber from the inlet of the condenser 102 by the blower 106. The hydrogen gas passes through the molecular sieve membrane 107 and flows out from the gas outlet. The R600A gas is blocked by the molecular sieve membrane 107 and accumulates in the condensation chamber, and the concentration of the R600A gas is increased. According to the h-s diagram (pressure-enthalpy diagram) of the gas R600A, at 40 ℃, the saturation pressure Pt of R600A is 4bar, and the standby pressure of the refrigeration equipment is 2Pt, namely 8bar, so that the concentration of the gas R600A in the condenser 102 is continuously increased, and when the concentration reaches 50%, namely the partial pressure reaches 1 Pt, the gas R600A starts to condense to form the liquid R600A. Liquid R600A flows from the exit port. The liquid R600A is introduced into the evaporator 101 along the second connection pipe 104, the hydrogen gas is introduced into the evaporator 101 along the third connection pipe 105, and the liquid R600A and the hydrogen gas are mixed in the evaporator 101. In the evaporator 101, since hydrogen is light and fills the evaporator 101, the partial pressure of the gaseous R600A is close to 0, and the liquid R600A has molecules that enter hydrogen to form R600A gas, i.e., the liquid R600A is evaporated. The R600A gas and hydrogen gas are mixed and then introduced into the condenser 102 through the first connection pipe 103, thereby achieving circulation. In this example, the cold end refrigeration temperature is-11 ℃ to 12 ℃.
It should be noted that the higher the temperature corresponding to the saturation pressure of the refrigerant, the higher the required system pressure, and the lower the temperature, the higher the heat dissipation requirement of the condenser 102, which increases the manufacturing cost. Through multiple tests and verifications, the invention finds that the selected temperature is 40 ℃, the system pressure and the heat dissipation requirements can be balanced, and the cost is effectively reduced.
In addition, the system pressure of the refrigeration equipment is set to be larger than the saturation pressure of the refrigerant at 40 ℃, and the system pressure of the refrigeration equipment is set to be twice of the saturation pressure of the refrigerant at 40 ℃, so that the refrigeration cycle efficiency can be further improved, the time required by refrigeration is reduced, and the manufacturing difficulty and cost cannot be greatly increased.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. Be applied to refrigeration plant of air conditioner characterized in that includes:
a refrigerant disposed in the refrigeration equipment line, the refrigerant comprising at least one of R600A, R417A, R410C, and R407C;
the pressure reducing gas is arranged in the pipeline of the refrigeration equipment and comprises at least one of hydrogen and helium;
an evaporator having an inlet and an outlet;
the condenser is provided with a condensation cavity, a gas inlet, a gas outlet and a liquid outlet, a molecular sieve membrane is arranged in the condensation cavity and is arranged between the gas inlet and the gas outlet, and the molecular sieve membrane is used for separating mixed gas consisting of the refrigerant and the pressure-reduced gas;
one end of the first connecting pipe is connected with the outlet, and the other end of the first connecting pipe is connected with the air inlet;
one end of the second connecting pipe is connected with the liquid outlet, and the other end of the second connecting pipe is connected with the inlet;
one end of the third connecting pipe is connected with the air outlet, and the other end of the third connecting pipe is connected with the inlet;
the blowing device is communicated with the first connecting pipe and is used for introducing the mixed gas into the condensation cavity;
the system pressure of the refrigeration equipment is set to be larger than the saturation pressure of the refrigerant at 40 ℃;
the shell is provided with a first installation space and a second installation space, the first installation space is located on the inner side of the wall, the second installation space is located on the outer side of the wall, the evaporator is installed in the first installation space, and the condenser is installed in the second installation space.
2. The refrigerating apparatus as recited in claim 1 wherein a port of the third connecting pipe is protruded into the second connecting pipe and is protruded from an inner wall of the second connecting pipe.
3. The refrigeration device as recited in claim 1 wherein the second connecting tube comprises a liquid storage section comprising a plurality of U-shaped tubes.
4. The refrigeration appliance according to claim 1 further comprising a heat sink for dissipating heat from the condenser.
5. The refrigeration appliance according to claim 4, wherein the heat sink comprises a cooling water pipe wound around an outside of the condenser.
6. The refrigeration apparatus as recited in claim 1 wherein a system pressure of the refrigeration apparatus is set to twice a saturation pressure of the refrigerant at 40 ℃.
7. The refrigeration appliance according to claim 1, wherein when the refrigerant is R600A, the system pressure of the refrigeration appliance is set to 8 Bar.
8. The refrigeration appliance according to claim 1, wherein when the refrigerant is R417A, the system pressure of the refrigeration appliance is set to 40 Bar.
9. The refrigeration appliance according to claim 1, wherein when the refrigerant is R410C, the system pressure of the refrigeration appliance is set to 40 Bar.
10. The refrigeration appliance according to claim 1, wherein when the refrigerant is R407C, the system pressure of the refrigeration appliance is set to 30 Bar.
CN202110583061.5A 2021-05-27 2021-05-27 Refrigeration equipment applied to air conditioner Pending CN113340021A (en)

Priority Applications (3)

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CN202110583061.5A CN113340021A (en) 2021-05-27 2021-05-27 Refrigeration equipment applied to air conditioner
US17/360,499 US20220381491A1 (en) 2021-05-27 2021-06-28 Refrigerating apparatus applied to air conditioner
DE102021120875.0A DE102021120875B3 (en) 2021-05-27 2021-08-11 Cooling device for an air conditioner

Applications Claiming Priority (1)

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CN202110583061.5A CN113340021A (en) 2021-05-27 2021-05-27 Refrigeration equipment applied to air conditioner

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Citations (1)

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Publication number Priority date Publication date Assignee Title
CN111795455A (en) * 2020-07-29 2020-10-20 五邑大学 Open ceiling refrigerating system

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Publication number Priority date Publication date Assignee Title
JP4007307B2 (en) * 2003-10-22 2007-11-14 ダイキン工業株式会社 Refrigeration equipment construction method
AT507617A1 (en) 2008-09-22 2010-06-15 Otto Dr Preglau HEAT PUMP
ES2926341T3 (en) * 2018-01-30 2022-10-25 Carrier Corp Integrated low pressure bleed
CN113340020A (en) * 2021-05-27 2021-09-03 五邑大学 Refrigeration equipment applied to refrigerator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111795455A (en) * 2020-07-29 2020-10-20 五邑大学 Open ceiling refrigerating system

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US20220381491A1 (en) 2022-12-01

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Application publication date: 20210903