WO1999046544A1

WO1999046544A1 - Coolant distributor, and air conditioner using it

Info

Publication number: WO1999046544A1
Application number: PCT/JP1998/001066
Authority: WO
Inventors: Atsushi Kubota; Toshio Hatada; Naoki Shikazono; Hiroshi Iwata; Kensaku Oguni; Takao Sensyu; Kunio Fujie; Hiroo Nakamura
Original assignee: Hitachi, Ltd.
Priority date: 1998-03-13
Filing date: 1998-03-13
Publication date: 1999-09-16

Abstract

A coolant distributor (6a) whose passage where coolant flows in from one end and flows out from the other is formed by a pair of plate members comprises an inlet branching section (7b) for branching the part where the coolant flows in into a plurality of parts; a confluent section (7c) for bringing together the coolant branched by the inlet branching section (7c); and an outlet branching section (7d) for branching the coolant brought together by the confluent section (7c) and letting it out. Thereby are provided a distributor achieving improvement of uneven distribution of coolant in a wide range of conditions of use unaffected by the type of coolant and the state of installation while keeping the pressure loss low, and an air conditioner using it, which can be operated at high efficiency and uses a smaller volume of coolant.

Description

Specification

Refrigerant distributor and air conditioner using the same

The present invention relates to a distributor or heat exchanger that divides a refrigerant into a plurality of flow paths and an air conditioner using the same, and is suitable for making the refrigerant uniform, improving the performance, and making the refrigerant compact. .

Background art

Conventionally, a refrigerant branch generally uses, for example, a branch pipe 4 as shown in FIG. 20, and the branch pipe 4 simply connects the inflow pipe 5 and the outflow pipe 8 spatially. .

As a branching mechanism for improving the uneven distribution of the refrigerant, a distributor in which perforated plates are laminated is known, for example, as described in Japanese Patent Application Laid-Open No. Hei 6-229656. The distributor according to the prior art is composed of a perforated plate having a larger number of holes than the number of branches, a collecting plate for collecting a plurality of refrigerants passing through the perforated plate, and the like. The liquid phases are separated by the action of gravity, and each phase is branched by a perforated plate. The branched refrigerants of each phase are combined at the collecting plate so that the total cross-sectional area of the holes is equally divided for each flow path, and is guided to the outflow pipe. Since the apparatus shown in FIG. 20 does not have a mechanism for controlling the refrigerant, there is a problem that the distribution amount of the refrigerant becomes non-uniform, and the distribution becomes more non-uniform as the number of branches increases.

In the case of stacking the perforated plates described in Japanese Patent Application Laid-Open No. 6-2299651, the gas phase and the liquid phase are separated by the action of gravity at the inlet of the distributor. And the characteristics vary greatly depending on the processing accuracy, and it is hard to say that the reliability for uniform distribution is sufficient. Furthermore, since the number of parts is large and the internal flow path is three-dimensional and complicated, there are many places where the refrigerant collides with the wall surface, and the pressure loss increases. Furthermore, the distribution characteristics vary greatly depending on the distribution of the gaseous phase and the liquid phase of the refrigerant. In addition to the non-uniform phase distribution of refrigerants such as non-azeotropic refrigerant mixtures, There is also a problem that the uneven distribution of the concentration of the substance affects the performance.

An object of the present invention is to provide a distributor in which the pressure loss is suppressed, the distribution of the refrigerant is improved unevenly over a wide range of operating conditions that does not affect the type and installation state of the refrigerant, and the amount of refrigerant used with high efficiency using the distributor is small. An object of the present invention is to provide a refrigerant-saving air conditioner.

In addition, the present invention does not change the distribution characteristics even for refrigerants that cannot be treated as a single component such as non-azeotropic refrigerants (for example, R407C) due to the demand for environmental protection. An object of the present invention is to provide a high distributor and an air conditioner using the same.

Disclosure of the invention

In order to achieve the above object, the present invention provides a refrigerant distributor in which a flow path through which a refrigerant flows in from one side and a flow path out of the other side is formed by a pair of plate members. An inlet branch portion, a merging portion for merging the refrigerant branched by the inlet branch portion, and an outlet branch portion for branching and flowing out the refrigerant merged by the merging portion.

Accordingly, since the refrigerant distributor is formed by the plate-shaped member, there is no three-dimensional meandering of the refrigerant, the pressure loss can be suppressed, and the number of flow paths can be easily increased or decreased. Therefore, the uniformity of distribution can be set freely. In addition, since the portion into which the refrigerant flows is branched into a plurality of parts, by increasing the number of branches, errors per branch are absorbed as a whole, and the influence of processing and assembly errors is suppressed. Can be. Furthermore, since the branched refrigerants are merged, and the merged refrigerants are branched and flow out, the non-uniform refrigerant masses in the respective flow paths at the merging portion directly collide with each other. Therefore, the exchange of the amount of refrigerant movement is promoted, and the amount of refrigerant can be made uniform. As described above, the distribution of the refrigerant can be made uniform under a wide range of operating conditions that do not affect the type and installation state of the refrigerant while suppressing the pressure loss, and the amount of the refrigerant used with high efficiency can be reduced.

Also, the present invention provides a refrigerant distributor having a flow path from an inflow pipe to an outflow pipe, wherein the inflow pipe into which the refrigerant flows is connected to one side, and a plurality of outflow pipes is connected to the other side. A flow path provided with more than the number of outflow pipes, wherein the refrigerant flowing in from the inflow pipe is branched by the flow path, and the branched refrigerant joins the outflow pipe through a plurality of flow paths. It flows out.

As a result, the refrigerant is branched off by the flow paths provided in excess of the number of the outflow pipes, so that each flow path is at least smaller than the size of the outflow pipe. In addition, the influence of gravity as an external force acting on the refrigerant is reduced, and the non-uniformity of each phase or each substance due to the density difference in the refrigerant can be prevented. Can be handled uniformly. Accordingly, distribution of the refrigerant with good reproducibility and its control can be performed.

Further, the present invention relates to a refrigerant distributor having a flow path from an inflow pipe to an outflow pipe, wherein one side is connected to an inflow pipe through which a refrigerant flows, and the other side is connected to a plurality of outflow pipes. It has an outflow pipe with a diameter of 15 mm or less, and a flow path with a diameter of 2 mm or more and 8 mm or less and more than the number of outflow pipes. They are merged and discharged.

For air outlets with a diameter of 4 mm or more and 15 mm or less, the diameter of the flow path should be 2 mm or more and 8 mm or less, and by increasing the number of outflow pipes more than the number of outflow pipes, air conditioning for business use In the case of air conditioners (package air conditioners) or room air conditioners, the pressure loss can be suppressed even when the capacity is taken into consideration, and the uneven distribution of refrigerant can be improved and the amount of refrigerant used can be reduced over a wide range of operating conditions. Furthermore, the present invention has a compressor, an expansion valve, a heat exchanger, and a refrigerant distributor, and in an air conditioner in which the refrigerant circulates, a flow path through which the refrigerant flows in from one side and flows out from the other side is a pair. A refrigerant distributor formed by the plate-shaped member of the above, wherein the refrigerant distributor comprises: an inlet branch portion for branching a portion into which the refrigerant flows into a plurality of portions; and a merging portion for joining the refrigerant branched by the inlet branch portion. And an outlet branching portion for branching and flowing out the refrigerant merged by the merging portion.

This makes it easy to increase or decrease the number of flow paths and increase the number of branches, thereby absorbing errors per branch as a whole and suppressing the effects of processing and assembly errors. Therefore, the distribution of the refrigerant can be made uniform under a wide range of operating conditions that do not affect the type and installation state of the refrigerant, and the amount of the refrigerant used can be reduced.

As described above, even for a refrigerant that cannot be treated as a single component, such as a non-azeotropic refrigerant mixture, it is possible to obtain a highly versatile refrigerant with the same distribution characteristics and no change in distribution characteristics.

Further, the present invention provides an air conditioner having a compressor, a heat exchanger, and an expansion valve, in which a refrigerant circulates, one of which is connected to an inflow pipe through which the refrigerant flows, and the other of which is connected to a plurality of outflow pipes. The flow path from the inflow pipe to the outflow pipe includes a heat exchanger formed by a plate-like member, and a flow path provided with more than the number of outflow pipes. The refrigerant branched and branched by the passage merges into the outflow pipe through a plurality of flow paths and flows out. Thereby, in the distributor or the heat exchanger, the arrangement of the plurality of flow paths can be freely changed, so that a form suitable for the installation space can be adopted. For example, if the channels are arranged in a plane, the shape becomes extremely thin. Therefore, a compact and highly efficient air conditioner can be obtained.

Further, the present invention has a compressor, a heat exchanger, and an expansion valve, and the refrigerant circulates. A heat exchanger having a flow path from the inflow pipe to the outflow pipe connected to one of the inflow pipes through which the refrigerant flows and the other to which a plurality of outflow pipes are connected, and having a diameter of 4 mm or more. It has an outflow pipe with a diameter of 15 mm or less, and a flow path with a diameter of 2 mm or more and 8 mm or less and more than the number of outflow pipes. They are merged and discharged.

Further, the present invention has a compressor, an expansion valve, a heat exchanger, and a refrigerant distributor, and in an air conditioner in which the refrigerant circulates, the refrigerant that is a non-azeotropic mixed refrigerant and the refrigerant flow in from the opposite direction In addition, a flow path flowing out from the other side is provided with a refrigerant distributor formed by a pair of plate members.

This makes it possible to use a non-azeotropic refrigerant with low risk of depletion of the ozone layer and a refrigerant suitable for it, and to reduce the amount of refrigerant itself, making it suitable for environmental protection. be able to.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 2 is a perspective view of the refrigerant distributor according to the first embodiment, FIG. 1 is a plan view of a small-diameter flow path group of the refrigerant distributor according to the second embodiment, and FIG. FIG. 4 is a cross-sectional view of the refrigerant distributor according to the second embodiment, and FIG. 5 is a refrigerant distribution according to the second embodiment. FIG. 6 is a cross-sectional view of the refrigerant distributor according to the second embodiment, FIG. 7 is a perspective view of the refrigerant distributor according to the third embodiment, and FIG. FIG. 9 is a plan view of a small diameter channel group of the refrigerant distributor according to the fourth embodiment of the refrigerant distributor according to the embodiment, and FIG. FIG. 11 is a cross-sectional view of a refrigerant distributor of an embodiment showing a modification of the fourth embodiment. FIG. 11 is a cross-sectional view of a refrigerant distributor of the embodiment showing a modification of the first to fourth embodiments. Figure 12 shows the fifth fruit. Sectional side view of a refrigerant distributor according to example 1 3, the flow path cross-sectional view of the refrigerant distributor according to a fifth embodiment, FIG 4 Is a cross-sectional view of a refrigerant distributor according to an embodiment showing a modification of the fifth embodiment, FIG. 15 is a side cross-sectional view of the refrigerant distributor according to the sixth embodiment, and FIG. FIG. 17 is a side sectional view of the refrigerant distributor according to the seventh embodiment, and FIG. 18 is a side sectional view of the refrigerant distributor according to the seventh embodiment. FIG. 19 is a block diagram showing a configuration of an air conditioner according to an embodiment, and FIG. 20 is a perspective view of a refrigerant distributor for a heat exchanger according to a conventional technique.

BEST MODE FOR CARRYING OUT THE INVENTION

In recent years, air conditioners have been required to save energy and save coolant in order to protect the global environment.To achieve high efficiency, air conditioners are to be equipped with refrigerant circuits with multiple parallel coolant channels. This is desirable. For example, room-eacons use a configuration in which a plurality of small-diameter tubes are used as heat transfer tubes for a heat exchanger and divided into appropriate paths to maximize heat exchange performance.

A distributor 6a according to a first embodiment of the present invention will be described with reference to FIGS. The distributor 66a is manufactured by bonding a plate 601 formed with a groove-shaped small-diameter flow path group 7 and a plate-shaped plate 602 by brazing or the like. The inlet pipe 5 and the outlet pipe 8 via the diffuser 14 are connected by brazing or the like so as to communicate with the internal flow path of the distributor 6a. The small-diameter flow path group 7 formed on the same plane by pressing or the like on the plate 601 has an inlet branch 7a, a straight flow path 7b, and an outlet branch 7d.

The number of the straight flow paths 7b is larger than that of the outflow pipes 8, and in the first embodiment, the number of the outflow pipes 8 is set to 12 in comparison with four. The representative diameter of the straight flow path 7b is such that the sum of the cross-sectional areas of all the flow paths is larger than the cross-sectional area of the inlet pipe 5 or the outlet pipe 8. Therefore, the size of the distributor 6a is proportional to the size of the diameter of the target refrigerant circuit pipe (the inlet pipe 5 or the outlet pipe 8). For example, when the distributor 6a is used for a room air conditioner, the diameter of the outflow pipe 8 is about 4 to 15 mm, the typical diameter of the straight flow path 7b is about 2 to 8 mm, and the length is about 10 to 40 mm .

The number of the straight flow path 7b is larger than that of the outflow pipe 8, and the refrigerant flowing from the inflow pipe 5 is guided along the inlet branch 7a, the straight flow path 7b, and mixed at the outlet branch 7d. After that, it is discharged from each outflow pipe 8. In this process, distribution unevenness due to a processing error or the like is suppressed in the entrance branch portion 7a. Since the small-diameter flow path group 7 is integrally formed on the plate 601, the distributor 6a has a small number of parts and does not have a three-dimensional meandering refrigerant. Therefore, the pressure loss of the refrigerant is low and an extremely thin shape is possible.

Next, a distributor according to a second embodiment of the present invention will be described with reference to FIGS. 1, 5, and 6. FIG. The only difference from the first embodiment is the shape of the small-diameter flow path group 7 formed in the plate 601. As shown in FIG. 6, it is desirable that the cross section of the small diameter channel group 7 is cylindrical.

The straight flow paths 7b are respectively arranged in parallel, and have a junction / branch 7c in the middle of the flow paths. In the present embodiment, all the straight flow paths 7b are guided to the same junction ♦ branching section 7c, but a shape in which a part of the straight flow path 7b merges and branches may be used.

Merging ♦ The branching portion 7c is arranged such that fluid masses ejected from the straight flow path 7b directly collide with each other to promote momentum exchange. Therefore, the amount of the refrigerant is equalized, and the refrigerant is evenly distributed in the outflow pipe 8, and although there is collision between the refrigerants or deflection of the refrigerants, the amount is small and the pressure loss can be reduced.

The difference from the first embodiment is that gravity is not used as the driving force for refrigerant distribution control, and the installation position of the distributor 6b may be vertical or horizontal with respect to gravity. In this embodiment, the number of the straight flow paths 7b is equal to the number of the outflow pipes 8, but the number of the straight flow paths 7b is larger. It is good to configure with the number. In addition, the straight flow path 7b may be configured in a three-dimensional manner, such as a cylindrical pipe.

Next, a distributor according to a third embodiment of the present invention will be described with reference to FIGS.

The distributor 6c is the same as the first embodiment except for the shape of the plate 601. The small-diameter flow path group 7 has a flow path cross-sectional shape similar to that of the first or second embodiment, and includes an inlet branch 7a, a straight flow path 7b, and a junction / branch 7c. Have.

The straight flow passages 7b, which are larger than the outflow pipes 8, are arranged in a mesh form to form a plurality of junctions / branches 7c. The junction / branch 7c is arranged such that fluid masses ejected from the straight flow path 7b directly collide with each other to promote momentum exchange.

In this embodiment, even if the refrigerant flowing from the inflow pipe 5 is non-uniformly branched at the inlet branch part 7a, the non-uniform refrigerant joins along the straight flow path 7b ♦ is guided to the branch part 7c. Due to repeated mixing and re-branching, it is evenly distributed in the outflow pipe 8. The installation posture of the distributor 6c can be either vertical or horizontal with respect to gravity as in the second embodiment.

The representative diameter of the straight flow path 7b is sufficiently smaller than the representative diameter of the inflow pipe 5 and the outflow pipe 8, and the number of the straight flow paths 7b is arranged sufficiently. In the present embodiment, a structure in which a plurality of straight flow path portions 7b are bundled and led to the outflow pipe 8 is further improved, and the uniformity of the coolant distribution is further improved. The third embodiment has a combination of the mechanisms shown in the first and second embodiments, and has a shape in which the refrigerant repeatedly joins and branches. The distributor 6c has a feature that it has a larger number of junctions and branches than other shapes, and therefore has good reproducibility.

Next, a distributor according to a fourth embodiment of the present invention will be described with reference to FIG. The distributor 6d differs from the second embodiment only in the shape of the plate 61. Real truth In this embodiment, a small-diameter flow passage group 7 having a larger number than the outflow pipe 8 is used, and the number of junctions and branches 7c is larger than that in the second embodiment. Therefore, the joining and branching of the refrigerant are repeatedly performed, and the distribution is further equalized. This shape has a smaller number of branches than the third embodiment, so that the pressure loss can be reduced.

In the first to fourth embodiments, the plate 602 has been described as a plate-shaped member. However, as shown in the cross-sectional view of FIG. 7 may be provided. Further, when the plates 61 and 62 are joined, if the small-diameter flow path groups 7 of the two do not overlap, the effect of improving the distribution is further enhanced.

Also, as shown in FIG. 11, it is good to form the plate 62 into a concave shape. This shape reduces distribution uniformity, but increases the cross-sectional area of the flow path and reduces pressure loss. In any of the first to fourth embodiments, the small-diameter flow path group is formed by forming grooves on the plate 61 or 602, but combining a circular pipe or the like. It is also good to mold. Next, a fifth embodiment of the present invention will be described with reference to FIGS. In the distributor 6e, a plate 601 is inserted into a plate 602 formed into a cylindrical shape, and the inflow pipe 5 and the outflow pipe 8 are joined to each other via a diffuser 14 by means of a mouth. The plate 601 has the small diameter channel group 7 as described in the first to fourth embodiments. Therefore, it is the same as that already described for the improvement of the refrigerant distribution unevenness. The distributor 6e of the present embodiment is cylindrically deformed so that the plate 601 has a symmetric axis in the refrigerant flow direction. Therefore, the installation area is small, the outer shape is compact, and the inflow pipe 5 and the outflow pipe 8 are parallel to each other. Further, as shown in FIG. 14, when the plate 61 is formed into a cylindrical shape, the small-diameter flow path group 7 may be oriented in the opposite direction. In this case, even if plate 602 is omitted, Some improvement in non-uniform distribution can be expected.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. The distributor 6f is obtained by rounding a plate 601 provided with the small-diameter flow path 7 in a spiral shape along the refrigerant flow direction, and integrating both ends by brazing or the like. The inflow pipe 5 may be connected to the cover 10, but may be connected so as to be inserted into the center of the plate 601 as shown in FIG.

The refrigerant that has flowed in from the inflow pipe 5 changes its direction at the inlet branch portion 7a, and flows down spirally along the small-diameter flow path group 7 formed in the plate 601. The distributor 6 f can be shortened in the longitudinal direction by the number of turns of the plate 601, and is more compact than the fifth embodiment. Further, by adjusting the length of the plate 601, there is an advantage that the number of the merging and branching portions 7c can be adjusted and the degree of improvement of the refrigerant distribution unevenness can be easily set. When the plate 601 is formed into a spiral shape, the small-diameter flow path 7 may be directed outward and the plate 602 may be formed as an outer wall, as in the fifth embodiment shown in FIG.

A seventh embodiment of the present invention will be described with reference to FIGS.

The distributor 6 g is obtained by laminating a plurality of plates 601 having the small-diameter flow paths 7 in the case 9 and joining the case 9 and the cover 10 together by a mouth or the like. However, the small diameter channel group 7 may be formed on both sides of the plate 601. The plates 601 are stacked in the thickness direction by alternately shifting the installation positions with respect to the flow direction. The refrigerant flowing in from the inflow pipe 5 flows down the meandering small-diameter flow path group 7 formed in the plate 601, and in the process, the uneven distribution of the refrigerant is improved. The distributor 6 g has a small installation area and can be installed in a small space as compared with the first and second embodiments. Further, by adjusting the number of the plates 601, the number of the merging / branching portions 7 c can be adjusted, and the pressure loss can be easily adjusted. Further, although the number of parts is increased as compared with the fifth and sixth embodiments, it is possible to make it easier to process. In the first to seventh embodiments, the number of inflow pipes 5 is described as one, but a plurality of inflow pipes 5 may be used.

The configuration of the air conditioner using the distributor 6 shown in the above embodiment will be described with reference to FIG.

Fig. 19 shows a case where the room is heated, consisting of a compressor 11, an indoor heat exchanger 1 a, an outdoor heat exchanger 1 b, a refrigerant distributor 6, an expansion valve 12, and a refrigerant circuit 13. Is done. Since the plurality of outdoor heat exchangers 1b are used, the distributor 6 is provided in the middle of the refrigerant circuit 13 upstream thereof.

The distributor 6 eliminates the difference between the refrigerant flow rates of the outlet pipes 8, so that the capacity of the outdoor heat exchanger 1b can be used without loss, and the performance of the air conditioner can be improved. Since no extra refrigerant is required, it is also desirable to save refrigerant.

As an embodiment of the present invention, a refrigerant distributor in an air conditioner including a compressor, a heat exchanger, a refrigerant distributor, a refrigerant circuit, and the like has been described. It goes without saying that it can be applied. Furthermore, due to the demand for environmental protection, even for refrigerants that cannot be treated as a single component, such as non-azeotropic refrigerants (for example, R407C), the distribution characteristics are not changed, and versatility is high. It can be something.

As described above, according to the present invention, since the refrigerant distributor is formed by the plate-shaped member, the pressure loss can be suppressed, the number of channels can be easily increased and decreased, and the uniformity of distribution can be freely set. Can be set to Therefore, the distribution of the refrigerant can be made uniform under a wide range of use conditions that do not affect the type of the refrigerant or the installation state, and the amount of the refrigerant to be used can be reduced.

Further, according to the present invention, since the refrigerant is branched by the flow path provided with more than the number of outflow pipes, it is possible to prevent unevenness of each phase or each substance due to a density difference in the refrigerant. Distribution of refrigerant with good reproducibility and its control I can do it.

Further, according to the present invention, the diameter of the flow path is set to 2 mm or more and 8 mm or less for an outflow pipe having a diameter of 4 mm or more and 15 mm or less, so that the number of outflow pipes is larger than the number of outflow pipes. Therefore, in the case of a commercial air conditioner (package air conditioner) or a room air conditioner, uneven distribution of the refrigerant can be improved under a wide range of use conditions.

Further, according to the present invention, in the distributor or the heat exchanger, the arrangement of the plurality of flow paths can be freely changed, so that a form suitable for the installation space can be adopted. An efficient air conditioner can be obtained.

As described above, according to the present invention, a distributor capable of uniformly distributing refrigerant without being affected by the type and installation state of the refrigerant while suppressing pressure loss, and the amount of refrigerant used with high efficiency using the distributor. It is possible to obtain a refrigerant-saving air conditioner with a small amount.

Further, according to the present invention, it is possible to obtain a highly versatile distributor in which the distribution characteristics do not change even for a non-azeotropic mixed refrigerant, and an air conditioner using the same.

Claims

The scope of the claims

1. In a refrigerant distributor in which a flow path through which a refrigerant flows in from one side and flows out from the other side is formed by a pair of plate members,

An inlet branch portion that branches the portion into which the refrigerant flows into a plurality,

A merging section for merging the refrigerant branched by the inlet branch section, and an outlet branch section for branching and flowing out the refrigerant merged by the merging section.

A refrigerant distributor characterized by comprising:

2. A refrigerant distributor having a flow path from an inflow pipe to an outflow pipe, wherein the inflow pipe into which the refrigerant flows is connected to one side, and a plurality of outflow pipes is connected to the other side. With the above-mentioned flow channel provided more than the number of pipes

A refrigerant distributor, comprising: a refrigerant flowing from the inflow pipe, branched by the flow path, and the branched refrigerant flowing out of the plurality of flow paths into the outflow pipe.

3. The refrigerant distributor according to claim 1, comprising a plurality of the merging portions between the inlet branch portion and the outlet branch portion, wherein the branching and merging of the refrigerant are repeated.

4. The refrigerant distributor according to claim 1, wherein the flow path is formed in a mesh.

5. In the refrigerant distributor, which has a flow path from the inflow pipe to the outflow pipe, the diameter of the refrigerant distributor is 4 mm or more and 15 mm or less. Said outflow pipe,

The flow path has a diameter of 2 mm or more and 8 mm or less and is provided with more than the number of outflow pipes.

And the refrigerant is merged into the outflow pipe from the plurality of flow paths and is discharged. A refrigerant distributor characterized in that:

6. An air conditioner that has a compressor, an expansion valve, a heat exchanger, and a refrigerant distributor, and in which refrigerant circulates,

A flow path in which the refrigerant flows in from one side and flows out from the other side has the refrigerant distributor formed by a pair of plate-shaped members;

The refrigerant distributor includes an inlet branching portion that branches the portion into which the refrigerant flows into a plurality of portions, a merging portion that merges the refrigerant branched by the inlet branching portion, and a branching portion that branches the refrigerant merged by the merging portion. An air conditioner, comprising: an outlet branch for outflow.

7. The air conditioner according to claim 6, wherein the air conditioner has a plurality of the merging portions between the inlet branch portion and the outlet branch portion, and repeats branching and merging of the refrigerant.

8. The air conditioner according to claim 6, wherein the flow path is formed in a mesh shape, has a plurality of the merging portions, and repeats branching and merging of the refrigerant.

9. An air conditioner having a compressor, a heat exchanger, and an expansion valve, and in which a refrigerant circulates,

A flow path from the inflow pipe to the outflow pipe connected to the inflow pipe through which the refrigerant flows into one side and a plurality of outflow pipes to the other side, and the heat exchanger formed by a plate-shaped member;

The flow path provided with more than the number of the outflow pipes;

An air conditioner, comprising: a refrigerant that flows in from the inflow pipe, branched by the flow path, and the branched refrigerant flows out of the flow paths by merging into the outflow pipe.

10. The air conditioner according to claim 9, wherein the flow path is formed in a mesh shape and repeats branching and joining of the refrigerant.

1 1. In an air conditioner that has a compressor, heat exchanger, and expansion valve and circulates refrigerant,

The heat exchanger having a flow path from the inflow pipe to the outflow pipe, wherein the inflow pipe through which the refrigerant flows in is connected to one side, and a plurality of outflow pipes is connected to the other side, and

The outlet pipe having a diameter of 4 mm or more and 15 mm or less;

The diameter is 2 mm or more and 8 mm or less, and the flow path is provided with more than the number of the outflow pipes.

An air conditioner, comprising: a refrigerant that flows out of the plurality of flow paths into the outflow pipe.

1 2. In an air conditioner that has a compressor, an expansion valve, a heat exchanger, and a refrigerant distributor,

Said refrigerant as a non-azeotropic mixed refrigerant,

An air conditioner comprising the refrigerant distributor, wherein a flow path through which the refrigerant flows in from one side and flows out from the other side is formed by a pair of plate members.