CN114316907A - Heat exchange medium, heat exchange circulating device, refrigerant leakage prevention method and air conditioner - Google Patents
Heat exchange medium, heat exchange circulating device, refrigerant leakage prevention method and air conditioner Download PDFInfo
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- CN114316907A CN114316907A CN202111668693.8A CN202111668693A CN114316907A CN 114316907 A CN114316907 A CN 114316907A CN 202111668693 A CN202111668693 A CN 202111668693A CN 114316907 A CN114316907 A CN 114316907A
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Abstract
The invention provides a heat exchange medium, a heat exchange circulating device, a refrigerant leakage prevention method and an air conditioner, wherein the heat exchange medium comprises the following components: refrigerant, refrigerator oil and leak preventive; wherein, the leak preventer comprises a substance which can be solidified by reaction with water, thereby being transformed from a liquid state to a solid state. The heat exchange medium provided by the invention can react with water in the air and solidify under the condition that equipment leaks, so that the leaked holes are blocked, and the aim of leakage prevention is fulfilled.
Description
Technical Field
The invention relates to the technical field, in particular to a heat exchange medium, a heat exchange circulating device, a refrigerant leakage prevention method and an air conditioner.
Background
In order to prevent global warming, it is required to reduce refrigerant leakage in the refrigeration system. The refrigerant leaks due to various reasons such as poor copper pipe, poor welding and poor construction of the manufactured end copper pipe, degradation and corrosion of the copper pipe after the copper pipe is used all the year round and the like. If the leakage rate is high, attention can be drawn quickly and countermeasures can be taken, but if the refrigerant leaks slowly, it is difficult to notice the occurrence of the leakage. The reason for the slow leakage of the refrigerant may be that the copper heat exchanger, the copper pipe, and the aluminum heat exchanger are corroded and continuously develop into the deep part of the pipe, and finally the leakage is caused. Such leaks are initially relatively small in leak point and slow in leak rate, and may often go undetected over months.
In the related art, resin particles are introduced into a heat exchange system to fill holes, and the resin particles are continuously circulated along with a heat exchange medium, so that the resin particles are easily clogged inside a compressor and in an oil pump, particularly, in a place where a passage is narrow.
Disclosure of Invention
In order to solve the problem of refrigerant leakage, an embodiment of the present invention provides a heat exchange medium, including: refrigerant, refrigerator oil and leak preventive; wherein, the leak preventer comprises a substance which can be solidified by reaction with water, thereby being transformed from a liquid state to a solid state.
Compared with the prior art, the technical scheme has the advantages that the condition of refrigerant leakage caused by poor construction is easy to detect, so that the countermeasure is easy to implement; however, in the actual use process, the through holes caused by pipeline corrosion are often smaller, and originate from the ant nest-shaped micro corrosion holes, the leakage speed is slow, and the through holes are often difficult to notice when the through holes are enlarged to a certain degree. In the heat exchange medium provided by the invention, the leak preventive is initially in a liquid state, and the water in the air contacted with the leak point can be polymerized to form a solid product, so that the hole is sealed. This heat transfer medium is particularly effective at small leaks, which can be sealed at the beginning of the leak.
Further, the leakage preventer comprises at least one of 2-cyanoacrylate compounds, organosilicon compounds and polyurethane.
In this example, the leakproof agent is selected from those which react with water to form a polymer compound, preferably those which react at a relatively high rate, and particularly preferably 2-cyanoacrylate compounds, silicone compounds, and polyurethanes. The sources of the above-mentioned materials are not particularly limited and can be realized by conventional sources well known to those skilled in the art. Among them, the polyurethane is preferably inPolyurethane in which terminal isothiocyanate groups remain in a polyurethane resin having a certain degree of polymerization; the viscosity is high and the proportion needs to be noted during the addition process. Organosilicon compounds such as alkylalkoxysilanes (R-Si (OR')3) Wherein R represents a hydrocarbon group, and specifically may be a methyl group, an ethyl group, a propyl group, or the like; in the presence of moisture, the alkoxy groups are hydrolyzed to form silanol groups, and the silanol groups are polymerized by dehydration condensation. The 2-cyanoacrylate compounds react rapidly with moisture to form polymers, effectively blocking the micropores.
Further, the leakage preventive comprises a 2-cyanoacrylate compound; the 2-cyanoacrylate compound comprises at least one of methyl 2-cyanoacrylate, ethyl 2-cyanoacrylate, isopropyl 2-cyanoacrylate, butyl 2-cyanoacrylate and ethoxy 2-cyanoacrylate.
In this example, for the 2-cyanoacrylate-based Compound (CH)2The choice of ═ c (cn) -COOR) is not particularly limited, and those skilled in the art can select it according to specific needs, and may be one or more of such compounds. Specifically, methyl 2-cyanoacrylate (R is CH) can be selected3-), 2-Cyanoacrylic acid Ethyl ester (R is C)2H5-), isopropyl 2-cyanoacrylate (R is C3H7-), 2-Cyanoacrylic acid butyl ester (R is C)4H9-), 2-cyanoacrylic acid ethoxy ester (R is C)2H5OCH2CH2-) and the like.
Further, the refrigerator oil comprises at least one of polyol-based oil, polyvinyl ether oil, alkylbenzene oil and oil; and/or the refrigerant comprises at least one of HFC refrigerant, HFO refrigerant and HC refrigerant.
The refrigerator oil in the present embodiment includes, for example, polyol-based (POE) oil, polyvinyl ether (PVE) oil, Alkylbenzene (AB) oil, oil (MO), and the like. Since the 2-cyanoacrylate compound is a normal temperature liquid ester, it is soluble in polar refrigerator oils such as POE oil and PVE oil (PVE), and also in oil (MO) to a degree of mobility, so that the leak preventive agent of the present invention can be used not only in a heat exchange system for fluorine refrigerants using POE oil and PVE oil (PVE), but also in a heat exchange system for hydrocarbon refrigerants using mineral oil. In addition, among refrigerator oils, polyalkylene glycol (PAG) oils are not recommended because they tend to have moisture and, particularly when used after long-term storage, 2-cyanoacrylates react with PAG oils and solidify.
In the present embodiment, the HFC refrigerant includes R410A, R32, and the like; including R1234yf, etc.; including propane and the like. Any of the above refrigerants can be used because they do not react with the refrigerant leak preventive agent. The sources of the refrigerating machine oil and the refrigerant in the present embodiment are not particularly limited, and may be realized by conventional sources well known to those skilled in the art.
Further, the heat exchange medium further comprises at least one of an antioxidant, a drying agent and an extreme pressure additive.
In this embodiment, the heat transfer medium may further comprise an auxiliary agent, such as an antioxidant, which may prevent oxygen from adversely affecting. The desiccant can remove moisture in the heat exchange medium, and the leakproof agent which is very easy to react with water is added in the heat exchange medium, so that the desiccant is added under necessary conditions, the moisture in the system is prevented from reacting with the leakproof agent, and the cyclic work of the heat exchange medium is further ensured. The extreme pressure additive plays a role in lubricating in the process of circulation of the heat exchange medium.
Further, the heat exchange medium also comprises at least one of a dibutyl hydroxy toluene antioxidant, a phenyl glycidyl ether drying agent and a triphenyl ester extreme pressure additive.
In this embodiment, the antioxidant is preferably dibutylhydroxytoluene, the drying agent is preferably phenyl glycidyl ether, and the extreme pressure additive is preferably triphenyl ester.
Further, the mass of the leakage preventive is 1-20% of the mass of the refrigerating machine oil.
In the present embodiment, the amount of the leak preventive added to the heat exchange system is not particularly limited, and preferably, the amount of the leak preventive added is 1% to 20% by mass of the refrigerating machine oil; specifically, the concentration may be 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%, 17%, 19%, 20%. If the amount of the leak preventive is less than 1%, the effect of blocking the micropores formed by corrosion is deteriorated; if the amount is more than 20%, the viscosity of the refrigerating machine oil is lowered, and the lubricating performance is insufficient.
On the other hand, the embodiment of the invention also provides a heat exchange circulating device, which comprises the heat exchange medium; the heat exchange system also comprises a compressor, an indoor heat exchanger, an expansion mechanism and an outdoor heat exchanger; wherein, the heat exchange medium circulates in the compressor, the indoor heat exchanger, the expansion mechanism and the outdoor heat exchanger.
In the present embodiment, the heat exchange cycle apparatus is used for an air conditioner, and includes a compressor 1, an outdoor heat exchanger 2, an expansion mechanism 3 such as an expansion valve, an indoor heat exchanger 4, a pipe connecting these components, a working medium circulating inside these components, and a control device for controlling these operations. The indoor air conditioner may further include a four-way valve for switching an indoor cooling/heating operation, a two-way valve for connecting an indoor and outdoor connection pipe, and a three-way valve. If these components are used in a general air conditioner, they do not react with the heat exchange medium provided in some embodiments of the present invention. In this embodiment, the heat exchange medium circulating in the heat exchange cycle apparatus is provided by some embodiments of the present invention, and includes a refrigerant, refrigerator oil, and a leakage preventive; wherein, the leak preventer comprises a substance which can be solidified by reaction with water, thereby being transformed from a liquid state to a solid state. In order to ensure that the leak preventive agent can exert its effect, it is preferable to suppress the water content in the refrigeration cycle to 1000wtppm or less. In order to reduce the amount of moisture in the refrigeration cycle, it is preferable to provide a desiccant such as zeolite in the refrigeration cycle.
On the other hand, the embodiment of the invention also provides a refrigerant leakage prevention method, which is applied to a heat exchange circulating device of an air conditioner; the refrigerant leakage prevention method comprises the following steps: adding a leak preventer into the heat exchange circulating device; the leak preventive can be solidified by reaction with water, thereby being changed from a liquid state to a solid state.
In the present embodiment, a method for preventing leakage of refrigerant is provided, and the addition mode of the leakage preventive is not particularly limited, and the leakage preventive may be mixed with the refrigerating machine oil and introduced into the compressor, or may be introduced into the refrigeration system after the air conditioner is installed. In the case of introduction after installation, it is preferable that the inner unit is first evacuated and then introduced from the service port. In addition, a connecting pipe containing a refrigerant leakage preventive may be added between the inner and outer connecting pipes. Of course, the heat exchange medium provided by some embodiments of the present invention may also be directly added to the heat exchange cycle device, and the heat exchange medium includes a refrigerant, refrigerator oil, and a leakage preventive. Preferably, the refrigerating machine oil or refrigerant coexisting with the leakage preventive agent is the same as the medium used in the refrigerating system.
In some embodiments of this example, the leakproof agent is preferably a 2-cyanoacrylate compound; more preferably at least one of methyl 2-cyanoacrylate, ethyl 2-cyanoacrylate, isopropyl 2-cyanoacrylate, butyl 2-cyanoacrylate and ethoxy 2-cyanoacrylate.
In another aspect, an embodiment of the present invention further provides an air conditioner, including the heat exchange circulation device.
In this embodiment, in the operation process of the air conditioner, the heat exchange medium flows in the heat exchange circulating device to complete the heat exchange work, and if a heat exchange system has tiny holes due to problems such as corrosion of a pipeline, the heat exchange medium leaks to the outside of the heat exchange system through the holes due to the influence of the internal and external pressure difference of the heat exchange system; at this time, the leakage preventive also leaks along with the heat exchange medium, and reacts with moisture in the air at the moment of leakage to form a polymer. The leakage-proof agent is changed from the original liquid state to the solid state after being polymerized, thereby sealing the leakage point of the heat exchange medium and realizing the leakage-proof function.
Drawings
Fig. 1 is a heat exchange cycle apparatus according to some embodiments of the present invention.
Reference numerals:
1-a compressor; 2-outdoor heat exchanger; 3-an expansion mechanism; 4-indoor heat exchanger.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below to clearly and completely describe the technical solutions in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problem of refrigerant leakage, an embodiment of the present invention provides a heat exchange medium, including: refrigerant, refrigerator oil and leak preventive; wherein, the leak preventer comprises a substance which can be solidified by reaction with water, thereby being transformed from a liquid state to a solid state.
In the related art, in order to solve the problem of refrigerant leakage, a resin solution or resin particles are generally added into the heat exchange system to fill the holes. However, in the case of adding a resin solution, when the heat exchange system is operated, the resin may be precipitated in the vicinity of the expansion valve and in a narrow flow path such as an evaporator or a low-temperature position, and clog the heat exchange system; in the case of adding resin particles, the resin particles may block a compressor, an oil pump, or the like.
Therefore, in order to avoid the blockage of the heat exchange system, the embodiment of the invention provides a heat exchange medium, wherein the heat exchange medium comprises a leak preventer, the leak preventer can be polymerized after reacting with water, and meanwhile, the leak preventer can be dissolved in the refrigerator oil, so that the normal circulation and the work of the heat exchange medium are not influenced. Therefore, the heat exchange medium circulates in the heat exchange system under the condition that the whole heat exchange system is complete in loop and does not have a leakage point. If the heat exchange system has tiny holes due to the problems of corrosion of pipelines and the like, the heat exchange medium can leak to the outside of the heat exchange system through the holes due to the influence of the pressure difference between the inside and the outside of the heat exchange system; at this time, the leakage preventive also leaks along with the heat exchange medium, and reacts with moisture in the air at the moment of leakage to form a polymer. The leakage-proof agent is changed from the original liquid state to the solid state after being polymerized, thereby sealing the leakage point of the heat exchange medium and realizing the leakage-proof function.
The technical scheme has the advantages that the condition of refrigerant leakage caused by poor construction is easy to detect, so that the countermeasure is easy to implement; however, in the actual use process, the through holes caused by pipeline corrosion are often smaller, and originate from the ant nest-shaped micro corrosion holes, the leakage speed is slow, and the through holes are often difficult to notice when the through holes are enlarged to a certain degree. In the heat exchange medium provided by the invention, the leak preventive is initially in a liquid state, and the water in the air contacted with the leak point can be polymerized to form a solid product, so that the hole is sealed. The heat exchange medium is particularly effective for some tiny leakage points, and the leakage points can be sealed at the initial stage of leakage; in particular, when the pore diameter of the corrosion hole is 0.1 mm or less, a good leakage preventing effect can be obtained.
Further, the leakage preventer comprises at least one of 2-cyanoacrylate compounds, organosilicon compounds and polyurethane.
In this example, the leakproof agent is selected from those which react with water to form a polymer compound, preferably those which react at a relatively high rate, and particularly preferably 2-cyanoacrylate compounds, silicone compounds, and polyurethanes. The sources of the above-mentioned materials are not particularly limited and can be realized by conventional sources well known to those skilled in the art.
Among them, the polyurethane is preferably a polyurethane in which terminal isothiocyanate groups remain in a polyurethane resin having a certain degree of polymerization; the viscosity is high and the proportion needs to be noted during the addition process.
Organosilicon compounds such as alkylalkoxysilanes (R-Si (OR')3) Wherein R represents a hydrocarbon group, and specifically may be a methyl group, an ethyl group, a propyl group, or the like; in the presence of moisture, the alkoxy groups are hydrolyzed to form silanol groups, which are polymerized by dehydration condensation; the reaction process is shown as formula (I) and formula (II):
the 2-cyanoacrylate compounds react rapidly with moisture to form polymers, effectively blocking the micropores. Since the 2-cyanoacrylate compound has a high polarity, it is easily present in the gas-liquid interface of the refrigerating machine oil when circulating together with the refrigerating machine oil in the refrigeration cycle, and thus easily comes into contact with air at the time of leakage. Therefore, it is considered that the cyanoacrylate compound is easily polymerized by rapidly reacting with moisture in the air to block the micropores. The polymerization reaction of the 2-cyanoacrylate compound with moisture is represented by the formula (III) and the formula (IV):
further, the leakage preventive comprises a 2-cyanoacrylate compound; the 2-cyanoacrylate compound comprises at least one of methyl 2-cyanoacrylate, ethyl 2-cyanoacrylate, isopropyl 2-cyanoacrylate, butyl 2-cyanoacrylate and ethoxy 2-cyanoacrylate.
In this example, for the 2-cyanoacrylate-based Compound (CH)2The choice of ═ c (cn) -COOR) is not particularly limited, and those skilled in the art can select it according to specific needs, and may be one or more of such compounds. Specifically, methyl 2-cyanoacrylate (R is CH) can be selected3-), 2-Cyanoacrylic acid Ethyl ester (R is C)2H5-), isopropyl 2-cyanoacrylate (R is C3H7-), 2-Cyanoacrylic acid butyl ester (R is C)4H9-), 2-cyanoacrylic acid ethoxy ester (R is C)2H5OCH2CH2-) and the like.
Further, the refrigerator oil comprises at least one of polyol-based oil, polyvinyl ether oil, alkylbenzene oil and oil; and/or the refrigerant comprises at least one of HFC refrigerant, HFO refrigerant and HC refrigerant.
The refrigerator oil in the present embodiment includes, for example, polyol-based (POE) oil, polyvinyl ether (PVE) oil, Alkylbenzene (AB) oil, oil (MO), and the like. Since the 2-cyanoacrylate compound is a normal temperature liquid ester, it is soluble in polar refrigerator oils such as POE oil and PVE oil (PVE), and also in oil (MO) to a degree of mobility, so that the leak preventive agent of the present invention can be used not only in a heat exchange system for fluorine refrigerants using POE oil and PVE oil (PVE), but also in a heat exchange system for hydrocarbon refrigerants using mineral oil. In addition, among refrigerator oils, polyalkylene glycol (PAG) oils are not recommended because they tend to have moisture and, particularly when used after long-term storage, 2-cyanoacrylates react with PAG oils and solidify.
In the present embodiment, the HFC refrigerant includes R410A, R32, and the like; HFO refrigerants include R1234yf and the like; the HC refrigerant includes propane and the like. Any of the above refrigerants can be used because they do not react with the refrigerant leak preventive agent. The sources of the refrigerating machine oil and the refrigerant in the present embodiment are not particularly limited, and may be realized by conventional sources well known to those skilled in the art.
Further, the heat exchange medium further comprises at least one of an antioxidant, a drying agent and an extreme pressure additive.
In this embodiment, the heat transfer medium may further comprise an auxiliary agent, such as an antioxidant, which may prevent oxygen from adversely affecting. The desiccant can remove moisture in the heat exchange medium, and the leakproof agent which is very easy to react with water is added in the heat exchange medium, so that the desiccant is added under necessary conditions, the moisture in the system is prevented from reacting with the leakproof agent, and the cyclic work of the heat exchange medium is further ensured. The extreme pressure additive plays a role in lubricating in the process of circulation of the heat exchange medium.
Further, the heat exchange medium also comprises at least one of a dibutyl hydroxy toluene antioxidant, a phenyl glycidyl ether drying agent and a triphenyl ester extreme pressure additive.
In this embodiment, the antioxidant is preferably dibutylhydroxytoluene, the drying agent is preferably phenyl glycidyl ether, and the extreme pressure additive is preferably triphenyl ester.
Further, the mass of the leakage preventive is 1-20% of the mass of the refrigerating machine oil.
In the present embodiment, the amount of the leak preventive added to the heat exchange system is not particularly limited, and preferably, the amount of the leak preventive added is 1% to 20% by mass of the refrigerating machine oil; specifically, the concentration may be 1%, 3%, 5%, 7%, 9%, 11%, 13%, 15%, 17%, 19%, 20%. If the amount of the leak preventive is less than 1%, the effect of blocking the micropores formed by corrosion is deteriorated; if the amount is more than 20%, the viscosity of the refrigerating machine oil is lowered, and the lubricating performance is insufficient.
Referring to fig. 1, in another aspect, an embodiment of the present invention further provides a heat exchange cycle device, where the heat exchange cycle device includes the heat exchange medium; the heat exchange system also comprises a compressor, an indoor heat exchanger, an expansion mechanism and an outdoor heat exchanger; wherein, the heat exchange medium circulates in the compressor, the indoor heat exchanger, the expansion mechanism and the outdoor heat exchanger.
In the present embodiment, the heat exchange cycle apparatus is used for an air conditioner, and includes a compressor 1, an outdoor heat exchanger 2, an expansion mechanism 3 such as an expansion valve, an indoor heat exchanger 4, a pipe connecting these components, a working medium circulating inside these components, and a control device for controlling these operations. The indoor air conditioner may further include a four-way valve for switching an indoor cooling/heating operation, a two-way valve for connecting an indoor and outdoor connection pipe, and a three-way valve. If these components are used in a general air conditioner, they do not react with the heat exchange medium provided in some embodiments of the present invention. In this embodiment, the heat exchange medium circulating in the heat exchange cycle apparatus is provided by some embodiments of the present invention, and includes a refrigerant, refrigerator oil, and a leakage preventive; wherein, the leak preventer comprises a substance which can be solidified by reaction with water, thereby being transformed from a liquid state to a solid state. In order to ensure that the leak preventive agent can exert its effect, it is preferable to suppress the water content in the refrigeration cycle to 1000wtppm or less. In order to reduce the amount of moisture in the refrigeration cycle, it is preferable to provide a desiccant such as zeolite in the refrigeration cycle.
On the other hand, the embodiment of the invention also provides a refrigerant leakage prevention method, which is applied to a heat exchange circulating device of an air conditioner; the refrigerant leakage prevention method comprises the following steps: adding a leak preventer into the heat exchange circulating device; the leak preventive can be solidified by reaction with water, thereby being changed from a liquid state to a solid state.
In the present embodiment, a method for preventing leakage of refrigerant is provided, and the addition mode of the leakage preventive is not particularly limited, and the leakage preventive may be mixed with the refrigerating machine oil and introduced into the compressor, or may be introduced into the refrigeration system after the air conditioner is installed. In the case of introduction after installation, it is preferable that the inner unit is first evacuated and then introduced from the service port. In addition, a connecting pipe containing a refrigerant leakage preventive may be added between the inner and outer connecting pipes. Of course, the heat exchange medium provided by some embodiments of the present invention may also be directly added to the heat exchange cycle device, and the heat exchange medium includes a refrigerant, refrigerator oil, and a leakage preventive. Preferably, the refrigerating machine oil or refrigerant coexisting with the leakage preventive agent is the same as the medium used in the refrigerating system.
In some embodiments of this example, the leakproof agent is preferably a 2-cyanoacrylate compound; more preferably at least one of methyl 2-cyanoacrylate, ethyl 2-cyanoacrylate, isopropyl 2-cyanoacrylate, butyl 2-cyanoacrylate and ethoxy 2-cyanoacrylate.
In another aspect, an embodiment of the present invention further provides an air conditioner, including the heat exchange circulation device.
In this embodiment, an air conditioner is provided, in an operation process of the air conditioner, a heat exchange medium flows in a heat exchange circulating device to complete a heat exchange operation, and if a heat exchange system has a tiny hole due to problems such as corrosion of a pipeline, the heat exchange medium leaks to the outside of the heat exchange system through the hole due to the influence of an internal pressure difference and an external pressure difference of the heat exchange system; at this time, the leakage preventive also leaks along with the heat exchange medium, and reacts with moisture in the air at the moment of leakage to form a polymer. The leakage-proof agent is changed from the original liquid state to the solid state after being polymerized, thereby sealing the leakage point of the heat exchange medium and realizing the leakage-proof function.
Example 1
The embodiment provides a heat exchange medium, which comprises a refrigerant, refrigerator oil and a leak preventer; the refrigerant is propane in HC refrigerant; the refrigerator oil is polyol-based (POE) oil; the leak preventer is 2-methyl cyanoacrylate. Wherein the mass of the leak preventive is 1% of that of the refrigerator oil.
Example 2
The embodiment provides a heat exchange medium, which comprises a refrigerant, refrigerator oil and a leak preventer; the refrigerant is R32 in HFC refrigerant; the refrigerator oil is polyvinyl ether (PVE) oil; the leak-proof agent is 2-cyano butyl acrylate. Wherein the mass of the leak preventive is 5% of that of the refrigerator oil.
In this embodiment, the heat exchange medium further includes a dibutyl hydroxy toluene antioxidant, a phenyl glycidyl ether drying agent, and a triphenyl ester extreme pressure additive.
Example 3
The embodiment provides a heat exchange medium, which comprises a refrigerant, refrigerator oil and a leak preventer; the refrigerant is R410A in HFC refrigerant; the refrigerator oil is Alkylbenzene (AB) oil; the leak-proof agent is 2-cyano acrylic acid ethyl ester and 2-cyano acrylic acid isopropyl ester. Wherein the mass of the leak preventive is 10% of that of the refrigerator oil.
Example 4
The embodiment provides a heat exchange medium, which comprises a refrigerant, refrigerator oil and a leak preventer; the refrigerant is R1234yf in HFO refrigerant; the refrigerator oil is oil (MO); the leak-proof agent is 2-cyanoacrylate ethoxy ester. Wherein the mass of the leak preventive is 15% of that of the refrigerator oil.
Example 5
The embodiment provides a heat exchange medium, which comprises a refrigerant, refrigerator oil and a leak preventer; the refrigerant is R410A in HFC refrigerant; the refrigerator oil is polyol-based (POE) oil; the leak-proof agent is isopropyl 2-cyanoacrylate and butyl 2-cyanoacrylate. Wherein the mass of the leak preventive is 20% of that of the refrigerator oil.
In this embodiment, the heat exchange medium further includes a dibutyl hydroxy toluene antioxidant, a phenyl glycidyl ether drying agent, and a triphenyl ester extreme pressure additive.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A heat exchange medium, comprising:
refrigerant, refrigerator oil and leak preventive;
wherein, the leak preventer comprises a substance which can be solidified by reaction with water so as to change from a liquid state to a solid state.
2. The heat exchange medium of claim 1,
the leakage preventer comprises at least one of 2-cyanoacrylate compounds, organosilicon compounds and polyurethane.
3. The heat exchange medium of claim 1,
the leak preventer comprises a 2-cyanoacrylate compound;
the 2-cyanoacrylate compound comprises at least one of methyl 2-cyanoacrylate, ethyl 2-cyanoacrylate, isopropyl 2-cyanoacrylate, butyl 2-cyanoacrylate and ethoxy 2-cyanoacrylate.
4. The heat exchange medium of claim 1,
the refrigerator oil comprises at least one of polyol-based oil, polyvinyl ether oil, alkylbenzene oil and oil; and/or
The refrigerant comprises at least one of HFC refrigerant, HFO refrigerant and HC refrigerant.
5. The heat exchange medium of claim 1,
the heat exchange medium further comprises at least one of an antioxidant, a drying agent and an extreme pressure additive.
6. The heat exchange medium of claim 1,
the heat exchange medium also comprises at least one of a dibutyl hydroxy toluene antioxidant, a phenyl glycidyl ether drying agent and a triphenyl ester extreme pressure additive.
7. The heat exchange medium of claim 1,
the mass of the leak preventer is 1-20% of that of the refrigerator oil.
8. A heat exchange circulating device is characterized in that,
the heat exchange cycle device comprises a heat exchange medium according to any one of claims 1 to 7;
the heat exchange system also comprises a compressor, an indoor heat exchanger, an expansion mechanism and an outdoor heat exchanger;
wherein the heat exchange medium circulates among the compressor, the indoor heat exchanger, the expansion mechanism, and the outdoor heat exchanger.
9. A method for preventing leakage of refrigerant is characterized in that,
the refrigerant leakage-proof method is applied to a heat exchange circulating device of an air conditioner;
the refrigerant leakage prevention method comprises the following steps:
adding a leak preventer into the heat exchange circulating device; the leakage preventive can be solidified by reaction with water, thereby being transformed from a liquid state to a solid state.
10. An air conditioner characterized by comprising the heat exchange cycle apparatus according to claim 8.
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| Title |
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| 蒋晶;黄世冠;: "汽车空调制冷剂泄漏预防控制技术研究", 中国新技术新产品, no. 23, pages 82 - 83 * |
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