JP7149494B2 - refrigeration cycle equipment - Google Patents

Description

The present invention relates to a refrigeration cycle apparatus using a working medium containing HFO1123.

In general, a refrigeration cycle device such as an air conditioner consists of a compressor, a four-way valve, a radiator (or a condenser), a pressure reducer such as a capillary tube or an expansion valve, and an evaporator, etc. A cooling or heating action is performed by forming a cycle and circulating a working medium (refrigerant) therein.

As a working medium in these refrigeration cycle apparatuses, fluorocarbons (fluorocarbons are specified as R○○ or R○○○ by the US ASHRAE 34 standard. Hereinafter, R○○ or R○○○ Halogenated hydrocarbons derived from methane or ethane called methane or ethane are known.

R410A is often used as a working medium for refrigeration cycle apparatuses as described above, but the global warming potential (GWP) of R410A refrigerant is as large as 2090, which is problematic from the viewpoint of global warming prevention.

Therefore, from the viewpoint of global warming prevention, working fluids with small GWP, such as HFO1123 (1,1,2-trifluoroethylene) and HFO1132 (1,2-difluoroethylene), have been proposed (for example, , see Patent Document 1 or Patent Document 2).

WO2012/157764 WO2012/157765

However, HFO1123 (1,1,2-trifluoroethylene) and HFO1132 (1,2-difluoroethylene) are less stable than conventional working fluids such as R410A, and if they generate radicals, they There is a possibility that it may change into another compound due to a chemical reaction. Since the disproportionation reaction causes a pressure rise accompanied by a large amount of heat release, there is a possibility that the reliability of the compressor and the refrigeration cycle device may be lowered. Therefore, when HFO1123 and HFO1132 are used in compressors and refrigeration cycle devices, it is necessary to suppress this disproportionation reaction.

Such a disproportionation reaction is initiated when high energy is applied in an atmosphere of excessively high temperature and high pressure.

For example, the discharge pressure (high pressure side of the refrigerating cycle) rises excessively due to abnormal operating conditions, such as stopping of the blower fan on the condenser side, blockage of the refrigerating cycle circuit, and the like.

Under such a condition, the compressor locks abnormally, and if the power supply to the compressor continues even under the lock abnormality, excessive power is supplied to the motor of the compressor, causing the motor to generate abnormal heat. . As a result, the insulation of the stator windings constituting the stator of the motor is melted and broken, causing a phenomenon called layer shorting between conductors, which becomes a source of high energy and induces a disproportionation reaction.

When the disproportionation reaction occurs, the compressor is damaged, and the working medium turns into soot and is blown out into the atmosphere from the gap between the outdoor unit main body and the top plate or front plate of the outdoor unit that houses the compressor. Reliability will drop significantly, such as people feeling uneasy.

SUMMARY OF THE INVENTION The present invention has been made in view of these points, and an object of the present invention is to improve the reliability of an air conditioner using a working medium containing HFO1123 when a disproportionation reaction occurs.

In order to achieve the above objects, the present invention encloses a working medium containing 1,1,2-trifluoroethylene in a refrigeration cycle circuit having a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger. In this air conditioner, an outdoor unit of the air conditioner housing the compressor is provided with a communicating portion for communicating between the compressor housing space and the outside of the compressor housing space.

As a result, when a disproportionation reaction occurs in the compressor and the compressor is damaged and the working medium turns into soot and is discharged and diffused into the compressor housing space, this soot is released from the communication part provided in the outdoor unit to the outdoor unit. discharged to the outside. Therefore, it is possible to eliminate the user's uneasiness caused by soot blowing out from the gap between the outdoor unit main body and the top plate or front plate of the outdoor unit. In addition, since the point where soot is discharged can be specified in the communication part, if the user is notified of the possibility of soot discharge, the user's anxiety will be alleviated and the user will be harmed by the discharge of soot. You can prevent giving.

According to the above configuration, the present invention can alleviate the user's anxiety caused by the soot blowing out when the disproportionation reaction occurs, and can prevent the user from being harmed. It is possible to improve the reliability of the air conditioner.

Schematic configuration diagram of an air conditioner as a refrigeration cycle device according to Embodiment 1 of the present invention Sectional view showing the compressor of the air conditioner according to the first embodiment The front view showing the outdoor unit of the air conditioner according to the first embodiment. 1 is an exploded perspective view showing an outdoor unit of an air conditioner according to Embodiment 1. FIG. A plan view showing the outdoor unit of the air conditioner according to the first embodiment. Schematic cross-sectional view for explaining the operation of the outdoor unit of the air conditioner according to the second embodiment. Schematic plan view for explaining the operation of the outdoor unit of the air conditioner according to the second embodiment. Explanatory drawing of the pressure relief mechanism provided in the compressor of the air conditioner according to the second embodiment.

A first invention is an air conditioner constructed by sealing a working medium containing 1,1,2-trifluoroethylene in a refrigeration cycle circuit having a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger. Further, the outdoor unit of the air conditioner housing the compressor is provided with a communicating portion for communicating between the compressor housing space and the outside of the compressor housing space.

As a result, when a disproportionation reaction occurs in the compressor and the compressor is damaged and the working medium turns into soot and is discharged and diffused into the compressor housing space, this soot is released from the communication part provided in the outdoor unit to the outdoor unit. discharged to the outside. Therefore, it is possible to eliminate the user's uneasiness caused by soot blowing out from the gap between the outdoor unit main body and the top plate or front plate of the outdoor unit. In addition, since the point where soot is discharged can be specified in the communication part, if the user is notified of the possibility of soot discharge, the user's anxiety will be alleviated and the user will be harmed by the discharge of soot. You can prevent giving.

A second invention is based on the first invention, wherein the outdoor unit includes a compressor and an outdoor heat exchanger in the outdoor unit body, and the compressor and the outdoor heat exchanger are separated by a partition plate. A housing space is formed, and the compressor is provided in this compressor housing space.

As a result, it is possible to prevent the soot discharged from the compressor from blowing out to the part housing the heat exchanger and contaminating the heat exchanger with soot, and the heat exchanger can be reused. .

According to a third aspect of the present invention, in the first or second aspect, the communicating portion has an area larger than the total area of gaps formed by opposing members forming the compressor housing space.

As a result, the soot discharged from the compressor into the compressor storage space is blown out of the outdoor unit from the communicating portion, so the gap formed by the members constituting the compressor storage space facing each other, that is, the outdoor unit of the outdoor unit It is possible to prevent the soot from blowing out vigorously from the gap between the main body and the top plate or the front plate, thereby alleviating the user's anxiety.

According to a fourth invention, in the first or second invention, the communication portion is provided above the lowermost portion of the compressor.

As a result, it is possible to prevent the communication portion from being clogged with drain water or the like that accumulates on the bottom surface of the outdoor unit, and it is possible to ensure the discharge of soot from the communication portion.

According to a fifth invention, in the first to fourth inventions, the communicating portion is provided on the rear surface of the outdoor unit main body.

As a result, the discharge of soot can be specified on the side of the wall surface of the house behind the outdoor unit, and the possibility of spraying soot on the surroundings of the outdoor unit, that is, on the front and sides of the user can be reliably prevented. can be done.

According to a sixth aspect of the invention, in the first to fifth aspects of the invention, the compressor is provided with a pressure relief portion for releasing an excessive pressure causing a disproportionation reaction to the outside.

As a result, extreme damage to the compressor itself can be prevented, safety can be improved, and the rapid progress of the disproportionation reaction can be suppressed to suppress the amount of soot generated, that is, from the communication part to the outside of the outdoor unit. The amount of discharged soot can be suppressed, and the anxiety of the user can be further reduced.

According to a seventh invention, in any one of the first to sixth inventions, a disproportionation inhibitor is added to the working medium.

As a result, the disproportionation reaction can be suppressed to prevent damage to the compressor itself, and safety can be further improved. , the amount of soot discharged from the communicating portion to the outside of the outdoor unit can be reduced, and the anxiety of the user can be further reduced.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a refrigeration cycle apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view of a compressor used in the same refrigeration cycle apparatus.

A refrigeration cycle apparatus 10 of the present embodiment is used as an air conditioner, and as shown in FIG. The outdoor unit 12 comprises an indoor heat exchanger 14 used as a condenser or condenser, and the outdoor unit 12 comprises an outdoor heat exchanger 15 used as a condenser or evaporator, a compressor 16, an expansion means 17, and a controller 18. there is

The indoor heat exchanger 14 of the indoor unit 11 and the outdoor heat exchanger 15 of the outdoor unit 12 are annularly connected by a pipe 13, thereby forming a refrigeration cycle. Specifically, the indoor heat exchanger 14 of the indoor unit 11, the compressor 16, the outdoor heat exchanger 15 of the outdoor unit 12, and the expansion means 17 are annularly connected by the pipe 13 in this order. A four-way valve 19 for switching between cooling and heating is provided in the pipe 13 connecting the indoor heat exchanger 14, the compressor 16, and the outdoor heat exchanger 15. As shown in FIG. The indoor unit 11 includes a blower fan, a temperature sensor, an operation unit, etc. (not shown), and the outdoor unit 12 includes a blower, an accumulator, etc. (not shown). Further, the pipe 13 is provided with various valve devices (including the four-way valve 19), a strainer, and the like (not shown).

The indoor heat exchanger 14 included in the indoor unit 11 exchanges heat between the indoor air sucked into the indoor unit 11 by the blower fan and the working medium flowing inside the indoor heat exchanger 14 . The indoor unit 11 blows air warmed by heat exchange into the room during heating, and blows air cooled by heat exchange into the room during cooling. The outdoor heat exchanger 15 included in the outdoor unit 12 exchanges heat between the outside air sucked into the outdoor unit 12 by the blower and the working medium flowing inside the outdoor heat exchanger 15 .

FIG. 2 shows the compressor 16 used in the refrigerating cycle circuit. In this embodiment, the compressor 16 is a closed rotary compressor. and a compression mechanism portion 163 are accommodated therein, and the inside is filled with a high-temperature and high-pressure working medium and lubricating oil, and the bottom portion is an oil storage portion 164 for storing the lubricating oil.

The electric motor section (motor) 162 is a so-called brushless motor, and includes a rotor 166 connected to a crankshaft 165 of the compression mechanism section 163 and a stator 167 provided around the rotor 166 .

The rotor 166 is configured by integrally mounting a permanent magnet on a rotor core. In addition, the stator 167 is configured by concentratedly winding the stator windings 170 around the stator core with insulating paper 169 interposed therebetween. A lead wire 171 is discharged from the stator winding 170 and the other end of the lead wire 171 is connected to a feed terminal 172 . The power supply terminal 172 has three terminals, each of which is connected to the inverter type controller 18 (see FIG. 1).
Note that the stator winding 170 may be configured with distributed winding.

The controller 18 is supplied with power from the external power supply 20 (see FIG. 1) and causes current to flow through the stator windings 170 by means of switching elements so that a rotating magnetic field is generated in the rotor 166 . The rotating magnetic field is varied by an inverter, and can be operated at high speed immediately after the compressor 16 starts operating, and at low speed during stable operation.

The compression mechanism portion 163 has a cylinder 174 forming a compression chamber 173 and a rolling piston 175 arranged in the compression chamber 173 inside the cylinder 174 . rolling piston 1
As the crankshaft 165 rotates, the working medium 75 rotates in the compression chamber while coming into contact with vanes (not shown), sucks the working medium from the suction pipe 179 and compresses it.

The compressed working medium is discharged from the discharge muffler 176 into the discharged working medium space 177 in the closed container 161 and discharged out of the compression mechanism section 163 through the discharge pipe 178 . Further, an accumulator 180 is provided in the suction pipe 179 in order to prevent liquid compression in the compression chamber 173 .

3 is a front view showing a specific example of the indoor unit 11 in the air conditioner having the above configuration, FIG. 4 is an exploded perspective view of the indoor unit 11, and FIG. 5 is a plan view of the outdoor unit. It is installed in a compressor storage space 123 partitioned by a partition plate 122 inside the machine main body 121 . A control housing chamber 124 containing the controller 18 is provided above the compressor housing space 123 , and the upper side thereof is covered with a top plate 125 that covers the upper portion of the outdoor unit main body 121 . An outdoor heat exchanger 15 and a blower 21 are installed next to the compressor storage space 123, and the front surface thereof is covered by a front plate 126 attached to the front surface of the outdoor unit main body 121 together with the front surface of the compressor storage space 123. be. A side wall cover 127 is detachably attached to the side surface of the outdoor unit main body 121 forming the compressor housing space 123 .

In the air conditioner configured as described above, a working medium (refrigerant) is enclosed in the refrigeration cycle circuit. The working medium of the present embodiment contains at least 1,1,2-trifluoroethylene (HFO1123) as a refrigerant component. 1,1,2-trifluoroethylene has the structure of the following formula (1), two hydrogen atoms (H) bonded to the carbon atom (C) at the 1-position of ethylene are fluorine (F ) and one of the two hydrogen atoms bonded to the carbon atom at the 2-position is substituted with fluorine.

１，１，２－トリフルオロエチレンは、炭素－炭素二重結合を含む。大気中のオゾンは、光化学反応によってヒドロキシルラジカル（ＯＨラジカル）を生成するが、このヒドロキシルラジカルにより二重結合が分解されやすい。そのため、１，１，２－トリフルオロエチレンは、オゾン層破壊および地球温度化への影響が少ないものとなっている。

1,1,2-trifluoroethylene contains a carbon-carbon double bond. Ozone in the atmosphere produces hydroxyl radicals (OH radicals) through a photochemical reaction, and these hydroxyl radicals easily break double bonds. Therefore, 1,1,2-trifluoroethylene has less impact on ozone depletion and global warming.

However, 1,1,2-trifluoroethylene, due to its good decomposability, causes a rapid disproportionation reaction when high energy such as layer short is applied under high temperature and high pressure conditions as described above. In this disproportionation reaction, a self-decomposition reaction occurs in which the molecules of 1,1,2-trifluoroethylene decompose, and following this self-decomposition reaction, the carbon produced by the decomposition is polymerized to form soot. A reaction etc. occurs. Therefore, due to the stoppage of the blower fan on the condenser side, blockage of the refrigeration cycle circuit, etc., a high temperature and high pressure state occurs, and although the compressor 16 is locked, the stator winding 170 continues to be energized and abnormally heats up. If dielectric breakdown occurs and layer shorting occurs, active radicals are generated, and the active radicals react with 1,1,2-trifluoroethylene to cause the disproportionation reaction described above.

Since the disproportionation reaction is accompanied by heat generation, the heat generation generates active radicals, which further induce the disproportionation reaction. In this way, the generation of active radicals and the generation of the disproportionation reaction are chained, so that the disproportionation reaction proceeds rapidly, and the pressure in the compressor 16 rises sharply in about 0.2 sec, Finally, the compressor 16 is damaged.

When the compressor 16 is damaged, the working medium undergoing a disproportionation reaction within the compressor 16 becomes soot and is discharged and diffused into the outdoor unit 12 housing the compressor 16. The air is blown out from a gap in the compressor storage space 123 of the compressor 12, for example, between the outdoor unit main body 121 and the top plate 125 or the front plate 126. As a result, the user feels great anxiety. In addition, since soot adheres to the part of the outdoor unit main body 121, the top plate 125, and the front plate 126 where the soot has blown out and the vicinity thereof, the outdoor unit main body 121, the top plate 125, and the front plate 126 may Even the housing itself will have to be replaced.

Therefore, in the air conditioner of the present embodiment, the compressor housing space 123 is provided with a communicating portion that communicates with the outside of the outdoor unit 12, that is, with the atmosphere. Specifically, as shown in FIG. 4, a side wall 128 and a side wall cover 127 of the outdoor unit main body 121 forming the compressor housing space 123 are provided with an exhaust hole 129 for discharging soot as a communicating portion.

As a result, when a disproportionation reaction occurs in the compressor 16 and the compressor 16 is damaged and the soot of the working medium is discharged and diffused into the compressor storage space 123, this soot is discharged from the side of the outdoor unit main body 121, that is, It is discharged to the outside of the outdoor unit 12 through exhaust holes 129 provided in the side wall 128 and the side wall cover 127 . Therefore, it is possible to prevent the air from blowing out from the gap between the outdoor unit main body 121 of the outdoor unit 12 and the top plate 125 or the front plate 126 .

Therefore, it is possible to eliminate the anxiety caused by soot blowing out from the gap between the outdoor unit main body 121 of the outdoor unit 12 and the top plate 125 or the front plate 126 .

In addition, by writing a note near the exhaust hole 129, for example, a note to the effect that "soot may be discharged in an abnormal situation", soot may be discharged from the exhaust hole 129. Also, it is possible to relieve the user's sense of anxiety and prevent the user from being harmed by soot discharge.

Furthermore, soot stains near the gaps between the outdoor unit main body 121, the top plate 125, and the front plate 126, which are generated when blowing out from the gaps between the outdoor unit main body 121 and the top plate 125, and the front plate 126, can be prevented. When performing maintenance such as replacing the compressor, it is not necessary to replace the housing itself consisting of the outdoor unit main body 121, the top plate 125 and the front plate 126, so that the cost burden for parts replacement can be reduced.

The exhaust hole 129 has a hole area larger than the total area of the gap formed between the top plate 125 and the front plate 126 covering the compressor housing space 123 and the outdoor unit main body 121. is desirable. That is, the area of the exhaust hole 129 is set larger than the sum of the areas of the gaps formed by the members (the outdoor unit body 121, the top plate 125, the front plate 126, etc.) that separate the space around the compressor 16. It is preferable to leave

As a result, the soot that has diffused into the compressor housing space 123 is smoothly discharged to the outside of the outdoor unit 12 through the exhaust hole 129 having a large opening area, and the outdoor unit main body 121 and the top plate 125 and front plate 126 are connected. It is possible to surely prevent air blowing out from the gap between them, improve the effect of eliminating the feeling of uneasiness, and surely prevent the housing from being stained with soot.

In addition, although the exhaust hole 129 is provided on the side of the outdoor unit 12 in this embodiment, it may be provided on the rear surface. Groups are preferred.

Further, if the exhaust hole 129 is provided on the back surface of the outdoor unit body 121, the soot discharge can be specified at the rear of the outdoor unit, and even if there are users around the front and side surfaces of the outdoor unit 12, It is possible to reliably prevent the user from being sprayed with soot. In other words, by providing the exhaust hole 129 on the side of the wall of the house behind the outdoor unit where the user cannot enter, it is possible to reliably prevent the user from being harmed by the soot.

Moreover, it is preferable to provide the exhaust hole 129 above the lowermost portion of the compressor 16 . As a result, there is a problem that is concerned when it is provided below the lowest part of the compressor 16, for example, on the bottom surface of the outdoor unit 12, that is, blockage of the exhaust hole 129 due to submersion in drain water or the like that accumulates on the bottom surface of the outdoor unit. This can be prevented in advance, and the discharge of soot from the exhaust hole 129 can be ensured.

(Embodiment 2)
FIG. 6 is a schematic configuration diagram showing an outdoor unit of an air conditioner according to Embodiment 2, FIG. 7 is a schematic plan view of the outdoor unit, and FIG. 8 is an explanatory diagram of a pressure relief mechanism provided in the compressor.

As shown in FIGS. 6 to 8, in the present embodiment, the compressor 16 is provided with a pressure relief mechanism 181 for releasing the pressure that suddenly rises due to the disproportionation reaction of the working medium. This pressure relief mechanism 181 is constructed by, for example, weakening the strength of the welded portion 182 of the power supply terminal 172 as shown in FIG.

As a result, when the pressure rises in the compressor 16 and a disproportionation reaction occurs, the pressure releases the welded portion of the power supply terminal 172, which serves as the pressure relief mechanism 181, and the pressure is released from the welded portion of the power supply terminal 172. As a result, the pressure of the working medium inside the compressor 16 drops instantaneously. Therefore, extreme damage to the sealed container itself of the compressor 16 can be prevented, and safety can be improved. In addition, the rapid progress of the disproportionation reaction can be suppressed to reduce the amount of soot generated, that is, the amount of soot discharged from the exhaust hole 129, thereby further reducing the anxiety of the user. can be done.

Further, as shown in FIG. 6, by providing a guide member 183 toward the exhaust hole 129 from the vicinity of the pressure relief mechanism 181, the soot discharged from the pressure relief mechanism 181 of the compressor 16 is guided to the exhaust hole 129. It is possible to smoothly discharge the soot to the outside of the outdoor unit 12, and prevent the soot from escaping from the gaps between the outdoor unit main body 121, the top plate 125 and the front plate 126 more reliably.

Further, by providing the soot discharge guide 184 outside the exhaust hole 129, it is possible to prevent the soot from blowing out toward the user, and to reliably prevent harm caused by the soot.

The pressure relief mechanism 181 is not limited to the above configuration, and may be configured by weakening the strength of the welded portion of the discharge pipe 178, or by providing a separate pressure regulating valve. be.

(Embodiment 3)
In the third embodiment, 1,1,2-trifluoroethylene (HFO1123) is added to the working medium enclosed in the refrigeration cycle circuit, that is, the working medium containing 1,1,2-trifluoroethylene (HFO1123). A disproportionation inhibitor is added to suppress the disproportionation reaction of

For example, the disproportionation inhibitor has the following formula (2)
_{C2HmXn ( 2} )
(where X in formula (2) is a halogen atom selected from the group consisting of F, Cl, Br, and I, m is an integer of 0 or more and n is an integer of 1 or more, and The sum of m and n is 6, and X is the same or different type of halogen atom when n is 2 or more.) (except when X is only F).

As described above, by adding the above-described disproportionation inhibitor to the refrigerant component containing 1,1,2-trifluoroethylene, the haloethane represented by the formula (2) is converted into chain branching of the disproportionation reaction. Radicals such as fluorine radicals, fluoromethyl radicals, and fluoromethylene radicals that cause reactions are well scavenged.

Therefore, it is possible to effectively suppress the disproportionation reaction of 1,1,2-trifluoroethylene and moderate the rapid progress of the disproportionation reaction.

Therefore, damage to the compressor itself can be prevented to further improve safety, and rapid progress of the disproportionation reaction can be suppressed. Therefore, the amount of soot discharged can be greatly suppressed, and the anxiety of the user can be further reduced.

Further, as the disproportionation inhibitor for suppressing this disproportionation reaction, the following may be used.

That is, they consist of saturated hydrocarbons having 2 to 5 carbon atoms and haloalkanes having 1 or 2 carbon atoms and excluding the case where all the halogen atoms are fluorine.

According to the disproportionation inhibitor, saturated hydrocarbons and haloalkanes effectively suppress radicals such as fluorine radicals, fluoromethyl radicals, and fluoromethylene radicals generated in the disproportionation reaction of 1,1,2-trifluoroethylene. can be captured. Therefore, it is possible to effectively suppress the disproportionation reaction of 1,1,2-trifluoroethylene and moderate the rapid progress of the disproportionation reaction. Moreover, it is also possible to suppress the disproportionation reaction or slow down the progress of the disproportionation reaction with a smaller amount than when the saturated hydrocarbon alone or the haloalkane alone is added as the disproportionation inhibitor. As a result, the reliability of the working medium and the refrigeration cycle apparatus using the same can be improved.

(Embodiment 4)
In this embodiment, in addition to the configuration of each of the above-described embodiments, for example, a detection means for detecting the discharge of soot by the working medium, for example, a temperature sensor is provided in the compressor housing space 123 because the soot is at a high temperature. When the temperature in the machine storage space 123 reaches or exceeds a predetermined temperature, this is displayed on the indoor unit side.

By doing so, when the air conditioner stops abnormally, the user can be notified that the cause of the abnormal stop is the disproportionation reaction. Therefore, it is possible not only to reduce the anxiety caused by the disproportionation reaction, but also to clarify the cause of the disproportionation reaction so that the user can feel secure.

As described above, the present invention has been described by taking the refrigeration cycle apparatus as an air conditioner as an example. A specific application example is not particularly limited as long as it is a refrigeration cycle apparatus having an outdoor unit, and for example, it may be a heat pump water heater or the like.

In addition, in the present embodiment, a rotary compressor has been described as an example of a compressor. Any compressor may be used.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a working medium containing HFO1123 can be used to alleviate the user's anxiety caused by the blowing out of soot when the disproportionation reaction occurs, and to prevent the user from being harmed. It is possible to improve the reliability of the refrigeration cycle device. Therefore, it can be widely applied to residential and commercial air conditioners, heat pump water heaters, and the like.

10 Refrigeration cycle device 11 Indoor unit 12 Outdoor unit 13 Piping 14 Indoor heat exchanger 15 Outdoor heat exchanger 16 Compressor 17 Expansion means 18 Controller 19 Four-way valve 20 External power source 21 Blower 121 Outdoor unit body 122 Partition plate 123 Compressor storage Space 124 Control storage chamber 125 Top plate 126 Front plate 127 Side wall cover 128 Side wall 129 Exhaust hole (communication part)
161 Sealed container 162 Electric motor section 163 Compression mechanism section 164 Oil storage section 165 Crankshaft 166 Rotor 167 Stator 169 Insulating paper 170 Stator winding 171 Lead wire 172 Power supply terminal 173 Compression chamber 174 Cylinder 175 Rolling piston 176 Discharge muffler 177 Discharge operation Medium space 178 Discharge pipe 179 Suction pipe 180 Accumulator 181 Pressure relief mechanism 182 Welded portion 183 Guide member 184 Soot discharge guide

Claims (5)

1, 1 in a refrigeration cycle circuit having a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger
, 2-a working medium containing trifluoroethylene is enclosed, and an outdoor unit housing the compressor is provided with a communication portion that communicates the compressor housing space and the outside of the outdoor unit,
The outdoor unit includes the compressor and the outdoor heat exchanger in the outdoor unit body, and the compressor and the outdoor heat exchanger are separated by a partition plate to form the compressor storage space, The compressor is provided in the compressor storage space,
The communication portion has an area larger than the total area of gaps formed among members of the top plate of the outdoor unit, the front plate of the outdoor unit, the main body of the outdoor unit, and the partition plate, which constitute the compressor housing space. and the communication portion is provided only on one of the wall surfaces forming the compressor storage space, other than the partition plate ,
A refrigerating cycle apparatus in which the partition plate is not provided with holes . 2. The refrigeration cycle apparatus according to claim 1, wherein said communicating portion is provided above the lowermost portion of said compressor. 3. The refrigerating cycle apparatus according to claim 1, wherein said communication portion is provided on the rear surface of said outdoor unit main body. 4. The refrigeration cycle apparatus according to any one of claims 1 to 3, wherein said compressor is provided with a pressure relief portion for releasing an excessive pressure causing a disproportionation reaction to the outside. The refrigeration cycle apparatus according to any one of claims 1 to 4, wherein a disproportionation inhibitor is added to said working medium.

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