WO2021182610A1 - Refrigeration cycle device - Google Patents

Abstract

This refrigeration cycle device constituting a refrigeration cycle is provided with: a first tank plate (20, 200) that is formed into a plate shape; a second tank plate (30, 300) that is formed into a plate shape, that is disposed oppositely to the first tank plate, and that forms, together with the first tank plate, a tank (13) which stores a gas-liquid two-phase refrigerant that flows in through a tank inlet (11) so as to be separated into a gas phase refrigerant and a liquid phase refrigerant; and a refrigerant pipe (40, 40) that is disposed between the first tank plate and the second tank plate, and that is provided with a pipe inlet (40a) through which the gas phase refrigerant in the tank enters and a pipe outlet (40b) disposed outside the tank, so as to discharge the gas phase refrigerant in the tank to the outside of the tank through the pipe inlet and the pipe output.

Description

Refrigeration cycle equipment Cross-reference to related applications

This application is based on Japanese Patent Application No. 2020-044248 filed on March 13, 2020 and Japanese Patent Application No. 2020-198663 filed on November 30, 2020. The description is incorporated herein by reference.

This disclosure relates to refrigeration cycle equipment.

Conventionally, an accumulator that separates the gas-liquid two-phase refrigerant flowing from the evaporator into the gas-phase refrigerant and the liquid-phase refrigerant and discharges the gas-phase refrigerant has been proposed (see, for example, Patent Document 1). This accumulator is configured by stacking a plurality of plates. Two adjacent plates out of a plurality of plates form a container unit that separates and stores a gas phase refrigerant and a liquid phase refrigerant. As a result, a plurality of container units are formed by the plurality of plates.

Here, two adjacent container units among the plurality of container units are formed with communication ports that communicate with each other. Therefore, the gas phase refrigerant stored in each of the plurality of container units is discharged to the compressor from the refrigerant outlet through the communication port.

Japanese Unexamined Patent Publication No. 2011-99593

According to the study of the inventor of the present application, in the accumulator of Patent Document 1, as described above, a plurality of container units for separately storing the gas phase refrigerant and the liquid phase refrigerant are composed of a plurality of plates. The number of parts when manufacturing an accumulator increases.

It is an object of the present disclosure to reduce the number of parts in a refrigeration cycle apparatus in which a liquid phase refrigerant and a gas phase refrigerant are separated and the liquid phase refrigerant is stored and the vapor phase refrigerant is discharged.

According to one aspect of the present disclosure, the refrigeration cycle equipment constituting the refrigeration cycle is formed so as to face the first tank plate formed in a plate shape and the plate shape and facing the first tank plate. The second tank plate, the first tank plate, and the first tank plate, which are arranged in the above and form a tank for separating and storing the gas-liquid two-phase refrigerant flowing from the tank inlet into the gas-phase refrigerant and the liquid-phase refrigerant together with the first tank plate. It is provided between the second tank plate and has a pipe inlet for entering the gas phase refrigerant in the tank and a pipe outlet arranged on the outside of the tank. It is provided with a refrigerant pipe that discharges to the outside.

According to this, the refrigeration cycle equipment can be composed of three parts such as a first tank plate, a second tank plate, and a refrigerant pipe. Therefore, the number of parts can be reduced in the refrigeration cycle equipment that separates the liquid phase refrigerant and the gas phase refrigerant to store the liquid phase refrigerant and discharge the vapor phase refrigerant.

According to this, the refrigeration cycle equipment is composed of two tank plates such as the first tank plate and the second tank plate. Therefore, the volume of the tank can be increased with respect to the volume as compared with the case where three or more tank plates are laminated to form a refrigeration cycle device.

From the above, it is possible to provide refrigeration cycle equipment with a small number of parts while securing the volume of the tank.

Note that the reference symbols in parentheses attached to each component or the like indicate an example of the correspondence between the component or the like and the specific component or the like described in the embodiment described later.

It is a block diagram which shows the whole structure of the steam compression refrigeration cycle in 1st Embodiment. It is a perspective view which shows the whole of the accumulator in 1st Embodiment. It is an exploded view which shows the state which disassembled the accumulator of FIG. 2 into two tank plates and a refrigerant pipe. It is sectional drawing which cut the accumulator parallel to the thickness direction in order to show the bonding state of two contacting ribs of the accumulator of FIG. It is a figure which shows the arrangement relation of the oil return hole and the filter in the lower pipe part of the refrigerant pipe of FIG. 2, and is the cross section which includes the axis of the lower pipe part of a refrigerant pipe. It is a figure which shows the liquid level of the liquid phase refrigerant in the accumulator by removing the tank plate of one of the accumulator of FIG. In the first modification of the first embodiment, it is a cross-sectional view of the accumulator cut in parallel in the thickness direction in order to show the joint state of two contacting ribs of the accumulator, and is a cross-sectional view corresponding to FIG. .. In the second modification of the first embodiment, it is a cross-sectional view of the accumulator cut in parallel in the thickness direction in order to show the joint state of two contacting ribs of the accumulator, and is a cross-sectional view corresponding to FIG. .. In the third modification of the first embodiment, it is a cross-sectional view of the accumulator cut in parallel in the thickness direction in order to show the joint state of two contacting ribs of the accumulator, and is a cross-sectional view corresponding to FIG. .. In the fourth modification of the first embodiment, it is a cross-sectional view of the accumulator cut in parallel in the thickness direction in order to show the joint state of two contacting ribs of the accumulator, and is a cross-sectional view corresponding to FIG. .. In the fifth modification of the first embodiment, it is a cross-sectional view of the accumulator cut in parallel in the thickness direction in order to show the joint state of two contacting ribs of the accumulator, and is a cross-sectional view corresponding to FIG. .. It is a block diagram which shows the whole structure of the steam compression refrigeration cycle in 2nd Embodiment. It is a perspective view which shows the whole of the accumulator in 2nd Embodiment. It is an exploded view which shows the state which disassembled the accumulator of FIG. 13 into two tank plates, a refrigerant pipe, and a header pipe part. It is a figure which shows the arrangement relation of the accumulator, the condenser, and the evaporator of FIG. 13, and is the figure which shows the inside of the accumulator by removing the tank plate of one of the accumulators. It is a figure which shows the liquid level of the liquid phase refrigerant in the accumulator by removing the tank plate of one of the accumulator of FIG. It is a side view which shows the appearance of the other side in the thickness direction of the refrigeration cycle equipment of 3rd Embodiment. It is a figure which shows the inside of the tank plate on one side in the thickness direction of the two tank plates of the refrigeration cycle equipment of the third embodiment, and the other side of the inner fins in the thickness direction. It is sectional drawing of XIX-XIX in FIG. 17 in 3rd Embodiment. It is a figure which shows the internal structure which cut | cut the refrigerating cycle apparatus in 3rd Embodiment by the plane orthogonal to the top-bottom direction. It is a side view which shows the appearance of one side in the thickness direction of the refrigeration cycle equipment of 3rd Embodiment. It is a figure which shows the inside of the tank plate single body on one side in the thickness direction of the refrigeration cycle equipment of 3rd Embodiment. It is a figure which shows the internal structure of the refrigerating cycle equipment of 3rd Embodiment in the state which the refrigerant pipe is arranged in the tank plate on one side in the thickness direction. It is a figure which shows the inside of the tank plate single body on the other side in the thickness direction in the refrigerating cycle apparatus of 3rd Embodiment. It is a figure which shows the internal structure in the state which the inner fin and the refrigerant pipe are arranged in the tank plate on the other side in the thickness direction in the refrigerating cycle equipment of 3rd Embodiment. It is a figure which shows the internal structure of the refrigerating cycle equipment of 3rd Embodiment in the state which the refrigerant pipe is arranged in the tank plate on the other side in the thickness direction. It is sectional drawing of XXVII-XXVII in FIG. 17 in 3rd Embodiment. It is a figure which shows the internal structure in the state which two refrigerant pipes are arranged in the tank plate on the other side in the thickness direction in the refrigeration cycle equipment of 4th Embodiment. It is a figure which shows the internal structure in the state which two refrigerant pipes are arranged in the tank plate on the other side in the thickness direction in the refrigeration cycle equipment of 5th Embodiment. It is a side view which looked at the refrigerating cycle apparatus of 6th Embodiment from the other side in the width direction. It is a figure which shows the inside of the tank plate on the other side in the thickness direction, and one side of the inner fin in the thickness direction in the refrigeration cycle equipment of the sixth embodiment. It is a figure which shows the inside of the tank plate on one side in the thickness direction in the refrigerating cycle apparatus of 6th Embodiment. FIG. 5 is a perspective view showing a part of the inside of a tank plate on the other side in the thickness direction in the refrigeration cycle equipment of the seventh embodiment. It is sectional drawing of XXXIIIB-XXXIIIB in FIG. 33A. FIG. 33A is a top view of the refrigerant adjusting unit alone in FIG. 33A as viewed from one side in the thickness direction. FIG. 33C is a side view of the refrigerant adjusting unit alone in FIG. 33C as viewed from the lower side of the drawing. It is sectional drawing which shows a part of the lower pipe part, and the filter in the refrigerant pipe of the accumulator of the refrigerating cycle equipment of 8th Embodiment. FIG. 5 is a cross-sectional view of the refrigerant pipe of the accumulator of the refrigeration cycle equipment of the ninth embodiment, in which the lower pipe portion and the filter are cut along a plane orthogonal to the axis line. FIG. 5 is a cross-sectional view of the refrigerant pipe of the accumulator of the refrigeration cycle apparatus of the ninth embodiment, in which the lower pipe portion and the filter are cut along a plane parallel to the axis. It is sectional drawing which cut the lower pipe part and the filter in the plane orthogonal to the axis of the refrigerant pipe of the accumulator of the refrigerating cycle equipment of the tenth embodiment. It is sectional drawing which cut the lower pipe part and the filter in the plane parallel to the axis of the refrigerant pipe of the accumulator of the refrigerating cycle equipment of the tenth embodiment. It is a figure which shows the inside of the accumulator by removing the tank plate of one of the accumulators in another embodiment.

Hereinafter, embodiments of the present disclosure will be described with reference to the figures. In each of the following embodiments, parts that are the same or equal to each other are designated by the same reference numerals in the drawings in order to simplify the description.

(First Embodiment)
The accumulator 10 of the first embodiment will be described with reference to FIGS. 1, 2, 3, 4, and 5.

The accumulator 10 of the present embodiment constitutes a refrigeration cycle device, and together with a compressor 2, a condenser 3, a pressure reducing valve 4, and an evaporator 5, constitutes a vapor compression refrigeration cycle 1 for an in-vehicle air conditioner. Examples of the in-vehicle air conditioning equipment of the present embodiment include air conditioning equipment for drivers of forklifts, air conditioning equipment for drivers of agricultural machinery such as tractors, air conditioning equipment for nap rooms of trucks, air conditioning equipment for automobiles such as microcars, and the like. Can be mentioned.

In the vapor compression refrigeration cycle 1, the refrigerant is circulated in the order of the compressor 2, the condenser 3, the pressure reducing valve 4, the accumulator 10, the evaporator 5, and the compressor 2, and the heat is absorbed by the evaporator 5 and dissipated from the condenser 3.

The accumulator 10 separates the gas-liquid two-phase refrigerant flowing out of the evaporator 5 into a gas-phase refrigerant and a liquid-phase refrigerant, stores the liquid-phase refrigerant, and discharges the gas-phase refrigerant to the compressor 2. Specifically, the accumulator 10 includes tank plates 20, 30 and a refrigerant pipe 40, as shown in FIGS. 2 and 3.

The tank plates 20 and 30 are arranged so as to face each other to form a tank 13 which is a rectangular and flat refrigerant container.

As shown in FIGS. 2 and 4, the tank plate 20 is a first tank plate including a front wall portion 21, side portions 22, 23, 24, 25, and flange portions 26a, 26b, 26c, 26d. The front wall portion 21 is arranged so as to face the rear wall portion 31 of the tank plate 30. The front wall portion 21 is formed in a planar shape that expands in the vertical direction and also expands in the width direction.

Here, the top-bottom direction means the top-bottom direction in a state where the accumulator 10 is mounted on the housing of the air conditioner. The direction in which the tank plates 20 and 30 are lined up is called the thickness direction. The width direction is a direction orthogonal to the top-bottom direction and orthogonal to the thickness direction.

Hereinafter, for convenience of explanation, as shown in FIG. 4, the tank plate 20 side is one side in the thickness direction with respect to the tank plate 30 in the thickness direction, and the tank plate 30 side is the other side in the thickness direction with respect to the tank plate 20 in the thickness direction. Be on the side.

Ribs 28a, 28b, 28c, 28d are provided on the front wall portion 21. The ribs 28a, 28b, 28c, and 28d are formed so that one side of the front wall portion 21 in the thickness direction is recessed in the thickness direction and the other side of the front wall portion 21 in the thickness direction is convex in the thickness direction. ing.

The ribs 28a, 28b, 28c, and 28d are formed so as to extend in the vertical direction, respectively. The ribs 28a, 28b, 28c, and 28d are arranged in the width direction at intervals.

The ribs 28a and 28b are arranged on one side in the width direction with respect to the ribs 28c and 28d. The ribs 28a and 28b have larger dimensions in the vertical direction than the ribs 28c and 28d. The ribs 28a and 28b have the same dimensions in the vertical direction. The ribs 28c and 28d have the same dimensions in the vertical direction.

The ribs 28a, 28b, 28c, and 28d are arranged at the same position in the top-bottom direction at their respective top-bottom improvement ends.

The lower ends of the ribs 28a and 28b in the vertical direction are arranged at the same positions in the vertical direction. The lower ends of the ribs 28c and 28d in the vertical direction are arranged at the same positions in the vertical direction.

The side portion 22 is arranged on the lower side in the vertical direction with respect to the front wall portion 21. The side portion 23 is arranged on the other side in the width direction with respect to the front wall portion 21. The side portion 24 is arranged on the heavenly region improvement side with respect to the front wall portion 21. The side portion 25 is arranged on one side in the width direction with respect to the front wall portion 21.

The flange portion 26a is formed so as to extend from the curved portion 27a to the outside of the tank 13. The curved portion 27a is formed in a curved shape by connecting the side portions 22 and 23. The flange portion 26b is formed so as to extend from the curved portion 27b to the outside of the tank 13. The curved portion 27b is formed in a curved shape by connecting the side portions 23 and 24.

The flange portion 26c is formed so as to extend from the curved portion 27c to the outside of the tank 13. The curved portion 27c is formed in a curved shape by connecting the side portions 24 and 25. The flange portion 26d is formed so as to extend from the curved portion 27d to the outside of the tank 13. The curved portion 27d is formed in a curved shape by connecting the side portions 25 and 22.

As shown in FIGS. 2 and 3, the tank plate 30 is a second tank plate including a rear wall portion 31, side portions 32, 33, 34, 35, and flange portions 36a, 36b, 36c, 36d. The rear wall portion 31 is arranged so as to face the front wall portion 21 of the tank plate 30. The rear wall portion 31 is formed in a planar shape that expands in the vertical direction and also expands in the width direction.

Ribs 38a, 38b, 38c, 38d are provided on the rear wall portion 31. The ribs 38a, 38b, 38c, and 38d are formed so that the other side of the rear wall portion 31 in the thickness direction is recessed in the thickness direction and one side of the rear wall portion 31 in the thickness direction is convex in the thickness direction. Has been done.

The ribs 38a, 38b, 38c, and 38d are formed so as to extend in the vertical direction, respectively. The ribs 38a, 38b, 38c, and 38d are arranged in the width direction at intervals.

The ribs 38a and 38b are arranged on one side in the width direction with respect to the ribs 38c and 38d. The ribs 38a and 38b have larger dimensions in the vertical direction than the ribs 38c and 38d. The ribs 38a and 38b have the same dimensions in the vertical direction. The ribs 38c and 38d have the same dimensions in the vertical direction.

The ribs 38a, 38b, 38c, and 38d are arranged at the same position in the top-bottom direction at their respective top-bottom improvement ends.

The lower ends of the ribs 38a and 38b in the vertical direction are arranged at the same positions in the vertical direction. The lower ends of the ribs 38c and 38d in the vertical direction are arranged at the same positions in the vertical direction.

In this character embodiment, the ribs 28a and 38a are joined in a state of facing each other and in contact with each other to form a partition portion. The ribs 28b and 38b are joined in a state of facing each other and in contact with each other to form a partition portion.

Further, the ribs 28c and 38c are joined in a state of facing each other and in contact with each other to form a partition portion. The ribs 28d and 38d are joined in a state of facing each other and in contact with each other to form a partition portion.

The side portion 32 is arranged on the lower side in the vertical direction with respect to the rear wall portion 31. The side portion 33 is arranged on the opposite side in the width direction with respect to the rear wall portion 31. The side portion 34 is arranged on the heavenly region improvement side with respect to the rear wall portion 31. The side portion 35 is arranged on one side in the width direction with respect to the rear wall portion 31.

Here, the side portions 22 and 32 are joined so as to face each other. The side portions 23 and 33 are joined so as to face each other. The side portions 24 and 34 are joined so as to face each other. The side portions 25 and 35 are joined so as to face each other.

The flange portion 36a is formed so as to extend from the curved portion 37a to the outside of the tank 13. The curved portion 37a is formed in a curved shape by connecting the side portions 32 and 33. The flange portion 36b is formed so as to extend from the curved portion 37b to the outside of the tank 13. The curved portion 37b is formed in a curved shape by connecting the side portions 33 and 34.

The flange portion 36c is formed so as to extend from the curved portion 37c to the outside of the tank 13. The curved portion 37c is formed in a curved shape by connecting the side portions 34 and 35. The flange portion 36d is formed so as to extend from the curved portion 37d to the outside of the tank 13. The curved portion 37d is formed in a curved shape by connecting the side portions 35 and 32.

The flange portions 26a and 36a are joined so as to face each other. The flange portions 26b and 36b are joined so as to face each other. The flange portions 26c and 36c are joined so as to face each other. The flange portions 26d and 36d are joined so as to face each other.

As shown in FIG. 3, the rear wall portion 31 of the tank plate 30 is formed with an inlet 11 which is a tank inlet which is opened from the inside of the tank 13 to the other side in the thickness direction. The entrance 11 is arranged on the other side of the rear wall portion 31 in the width direction and on the heavenly region improvement side. As will be described later, the gas-liquid two-phase refrigerant from the refrigerant outlet of the evaporator 5 flows into the inlet 11.

A through hole 120 is formed in the side portion 23 of the tank plate 20 and the side portion 33 of the tank plate 30 to allow the refrigerant pipe 40, which will be described later, to penetrate. Specifically, the side portion 23 of the tank plate 20 is formed with a recess 120a forming a through hole 120. A recess 120b forming a through hole 120 is formed in the side portion 33 of the tank plate 30. The through hole 120 is formed as an opening from the inside of the tank 13 to the other side in the width direction by combining the recesses 120a and 120b.

The refrigerant pipe 40 is arranged between the front wall portion 21 of the tank plate 20 and the rear wall portion 31 of the tank plate 30. The refrigerant pipe 40 is formed in an L shape by the upper pipe portion 42 and the lower pipe portion 41.

The upper piping portion 42 is formed so that the refrigerant flow path extends in the vertical direction. The upper piping portion 42 is arranged between the ribs 28b and 28c. The upper piping portion 42 is arranged between the ribs 38b and 38c. A pipe inlet 40a for entering a vapor phase refrigerant from inside the tank 13 is provided on the upper pipe portion 42 on the improvement side of the top region.

The pipe inlet 40a is arranged at the same position in the vertical direction with respect to the respective vertical improvement ends of the ribs 28a, 28b, 28b, and 28c. The pipe inlet 40a is arranged at the same position in the vertical direction with respect to the respective vertical improved ends of the ribs 38a, 38b, 38b, and 38c.

Here, the upper piping portion 42 is joined to the ribs 28b and 28c, and is joined to the ribs 38b and 38c. The upper piping portion 42 is joined to the front wall portion 21 and is joined to the rear wall portion 31.

The lower piping portion 41 is formed so as to extend from the lower side in the top-bottom direction to the other side in the width direction of the upper piping portion 42. The lower pipe portion 41 is formed with a refrigerant flow path for guiding the refrigerant that has passed through the upper pipe portion 42 to the pipe outlet 40b. The lower piping portion 41 penetrates between the inside and the outside of the tank 13 through the through hole 120.

The piping outlet 40b is arranged outside the tank 13. The pipe outlet 40b is formed on the other side of the lower pipe portion 41 in the width direction. The lower piping portion 41 of the present embodiment is arranged between the side portion 22 and the ribs 28c and 28d, and is arranged between the side portion 32 and the ribs 38c and 38d. A space is provided between the lower piping portion 41 and the side portions 22 and 32. The lower piping portion 41 is joined to the ribs 28c and 28d, and is joined to the ribs 38c and 38d. The lower piping portion 41 is joined to the front wall portion 21 and is joined to the rear wall portion 31. In this way, the refrigerant pipe 40 is joined to the inside (that is, the tank 13 side) of the tank plates 20 and 30.

The lower piping portion 41 has an oil return hole 40c opened downward. The oil return hole 40c is a hole for allowing the lubricating oil contained in the liquid phase refrigerant in the tank 13 to flow into the refrigerant flow path in the lower piping portion 41.

As shown in FIG. 5, the oil return hole 40c of the present embodiment is provided between the ribs 41a and 41b of the lower piping portion 41. The ribs 41a and 41b are protrusions that are annularly projected outward in the radial direction about the axis CL from the lower piping portion 41. The ribs 41a and 41b are arranged at intervals in the axial direction. The axis direction is the direction in which the axis CL extends. The axis CL is the axis of the lower piping portion 41.

Here, a filter 43 formed in a tubular shape is provided on the outer side in the radial direction about the axis CL with respect to the ribs 41a and 41b. As a result, the filter 43 is arranged so as to cover the oil return hole 40c. The filter 43 filters the lubricating oil flowing into the oil return hole 40c to remove impurities.

A tank 13 is formed between the tank plates 20 and 30 configured in this way to separate and store the gas-liquid two-phase refrigerant flowing in through the inlet 11 into the liquid-phase refrigerant and the gas-phase refrigerant. ..

Specifically, the tank 13 is divided into divided tank areas 13a, 13b, 13c, 13d, 13e, 13f, 13g by ribs 28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d.

The divided tank area 13a is formed between the side portion 35 and the ribs 38a and 28a. The split tank region 13b is formed between the ribs 38a and 28a and the ribs 38b and 28b. The split tank region 13c is formed between the ribs 38b and 28b and the ribs 38c and 28c.

The divided tank region 13d is formed between the ribs 38c and 28c and the ribs 38d and 28d. The split tank region 13e is formed between the ribs 38d and 28d and the side portion 33.

The divided tank region 13f is formed between the ribs 28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d and the side portion 34. The split tank region 13g is formed between the ribs 28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d and the side portion 32.

In the present embodiment, the divided tank regions 13a, 13b, 13c, 13d, and 13e are arranged in the width direction (that is, the horizontal direction). The divided tank regions 13a, 13b, 13c, 13d, and 13e are each formed so as to extend in the vertical direction.

The divided tank regions 13a, 13b, 13c, 13d, and 13e configured in this way are a plurality of divided tank regions for suppressing fluctuations in the liquid level 14 of the liquid phase refrigerant in the tank 13.

The tank plates 30, 30 and the refrigerant pipe 40 of this embodiment are made of an aluminum alloy material containing aluminum. As a method for joining the tank plates 30, 30 and the refrigerant pipe 40, for example, brazing joining is used.

With the accumulator 10 configured in this way stationary, the amount of refrigerant set so that the liquid level 14 of the liquid phase refrigerant in the accumulator 10 is located below the pipe inlet 40a of the refrigerant pipe 40 in the vertical direction. Is pre-filled in the steam compression refrigeration cycle 1.

The accumulator 10 of the present embodiment may be integrally molded by brazing or the like together with the condenser 3, the pressure reducing valve 4, the evaporator 5, and the like. However, for convenience of explanation, a method for manufacturing the accumulator 10 alone will be described below in this embodiment.

First, in the first step, the tank plates 20 and 30 and the refrigerant pipe 40 are prepared separately.

Here, as the tank plates 20, 30 and the refrigerant pipe 40, a lat material having a brazing material layer provided on the front surface or the back surface of a plate material made of an aluminum alloy material is used. The brazing filler metal layer is a layer made of brazing filler metal.

In the next step, the refrigerant pipe 40 is sandwiched between the tank plates 20 and 30, and the tank plates 20 and 30 are aligned in a state of facing each other.

At this time, the upper piping portion 42 of the refrigerant pipe 40 is arranged between the ribs 28b and 38b and the ribs 28c and 38c. The lower pipe portion 41 of the refrigerant pipe 40 is arranged below the ribs 28c, 38c, 28d, and 38d. The pipe outlet 40b is located outside the tank 13.

In the next step, with the tank plates 20 and 30 and the refrigerant pipe 40 combined, the tank plates 20 and 30 and the refrigerant pipe 40 are brazed and joined by heating in a high temperature furnace to melt the brazing material layer. do.

Specifically, the side portions 22, 23, 24, 25 of the tank plate 20, the flange portions 26a, 26b, 26c, 26d, and the side portions 32, 33, 34, 35 of the tank plate 30, the flange portions 36a, 36b, It is brazed and joined to 36c and 36d.

In addition to this, the refrigerant pipe 40 is brazed to the front wall portion 21 of the tank plate 20 and the rear wall portion 31 of the tank plate 30.

Further, the upper pipe portion 42 of the refrigerant pipe 40 is brazed to the ribs 28b, 38b, 28c, 38c. The lower piping portion 41 of the refrigerant pipe 40 is brazed to the ribs 28c, 38c, 28d, 38d, the recess 120a of the side portion 23, and the recess 120b of the side portion 33.

From the above, the tank plates 20 and 30 and the refrigerant pipe 40 are integrated by brazing joint to form an integrally molded product.

Next, the operation of the steam compression refrigeration cycle 1 and the operation of the accumulator 10 of the present embodiment will be described.

First, the compressor 2 sucks the vapor phase refrigerant from the accumulator 10, compresses it, and discharges it as a high-pressure refrigerant. The capacitor 3 dissipates heat from the high-pressure refrigerant discharged from the compressor 2.

Next, the pressure reducing valve 4 decompresses the high-pressure refrigerant flowing out of the condenser 3. The evaporator 5 evaporates the low-pressure refrigerant that has passed through the pressure reducing valve 4 by endothermic reaction. The accumulator 10 separates the gas-liquid two-phase refrigerant that has passed through the evaporator 5 into a gas-phase refrigerant and a liquid-phase refrigerant, stores the liquid-phase refrigerant, and discharges the gas-phase refrigerant.

Specifically, the gas-liquid two-phase refrigerant that has passed through the evaporator 5 enters the tank 13 through the inlet 11. In the tank 13, the gas-liquid two-phase refrigerant is separated into a gas-phase refrigerant and a liquid-phase refrigerant, the vapor-phase refrigerant is stored in the upper side of the tank 13, and the liquid-phase refrigerant is stored in the lower side of the tank 13. Become.

Specifically, the gas phase refrigerant and the liquid phase refrigerant are stored in each of the divided tank regions 13a, 13b, 13c, 13d, and 13e in a separated state. The vapor phase refrigerant is stored in the divided tank region 13f. The liquid phase refrigerant is stored in the divided tank area 13 g.

At this time, the vapor-phase refrigerant in the tank 13 flows from the pipe outlet 40b to the refrigerant inlet of the compressor 2 through the pipe inlet 40a and the refrigerant flow path of the refrigerant pipe 40.

At this time, the lubricating oil contained in the liquid phase refrigerant in the tank 13 flows into the refrigerant flow path of the refrigerant pipe 40 through the filter 43 and the oil return hole 40c. The lubricating oil flowing through the refrigerant flow path flows from the pipe outlet 40b to the refrigerant inlet of the compressor 2, that is, to the outside of the tank 13. That is, the lubricating oil flowing in the refrigerant flow path flows from the pipe outlet 40b to the outside of the tank 13. The lubricating oil is used for lubricating the compression mechanism and the like constituting the compressor 2.

At this time, the filter 43 removes impurities from the lubricating oil flowing from the inside of the tank 13 to the refrigerant flow path of the refrigerant pipe 40 through the oil return hole 40c. This prevents the oil return hole 40c from being clogged with impurities.

Further, the tank 13 is divided into divided tank areas 13a, 13b, 13c, 13d, 13e by ribs 28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d.

Therefore, it is possible to suppress the vibration of the liquid level 14 of the liquid phase refrigerant in the tank 13 and prevent the liquid phase refrigerant in the tank 13 from entering the pipe inlet 40a of the refrigerant pipe 40.

According to the present embodiment described above, the accumulator 10 constitutes a vapor compression refrigeration cycle in which a refrigerant is circulated. The tank plates 20 and 30 are formed in a plate shape and are arranged so as to face each other, and a tank 13 for separating and storing the gas-liquid two-phase refrigerant flowing in from the inlet 11 into a gas-phase refrigerant and a liquid-phase refrigerant Form.

The accumulator 10 includes a pipe inlet 40a for entering the gas phase refrigerant and a pipe outlet 40b arranged outside the tank 13 for discharging the vapor phase refrigerant, and the gas phase refrigerant in the tank 13 is supplied to the pipe inlet 40a and the pipe outlet 40b. It is provided with a refrigerant pipe 40 which is discharged to the outside of the tank 13 through the pipe.

Therefore, the accumulator 10 that separates the gas-liquid two-phase refrigerant into the liquid-phase refrigerant and the gas-phase refrigerant and discharges the gas-phase refrigerant while storing the liquid-phase refrigerant is provided with three components such as the tank plates 20, 30 and the refrigerant pipe 40. Can be configured by.

As described above, the accumulator 10 as a refrigeration cycle device can be configured with a smaller number of parts than the accumulator described in Patent Document 1. Along with this, the manufacturing cost of the accumulator 10 can be reduced as compared with the accumulator described in Patent Document 1.

In the present embodiment, the refrigerant pipe 40 is brazed to the tank plate 30 side in the thickness direction (that is, the alignment direction) of the tank plate 20. The refrigerant pipe 40 is brazed to the tank plate 20 side in the thickness direction (that is, the arrangement direction) of the tank plate 30.

Therefore, the strength of the accumulator 10 can be increased. Along with this, the pressure resistance to the refrigerant pressure in the tank 13 can be increased.

In the present embodiment, the ribs 28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d partition the tank 13 into divided tank areas 13a, 13b, 13c, 13d, 13e.

Here, when the divided tank regions 13a, 13b, 13c, 13d, 13e are not formed in the tank 13, and the accumulator 10 vibrates with the vibration of the vehicle, the liquid level 14 of the liquid phase refrigerant in the tank 13 Vibrates. Therefore, the liquid phase refrigerant in the tank 13 may enter the pipe inlet 40a of the refrigerant pipe 40.

On the other hand, in the present embodiment, the tank 13 is partitioned by ribs 28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d to form divided tank regions 13a, 13b, 13c, 13d, 13e. .. Therefore, the vibration of the liquid level 14 of the liquid phase refrigerant in the tank 13 is suppressed. It is possible to prevent the liquid phase refrigerant in the tank 13 from entering the pipe inlet 40a of the refrigerant pipe 40.

In particular, in the present embodiment, the divided tank regions 13a, 13b, 13c, 13d, and 13e are formed so as to extend in the vertical direction and are arranged in the width direction (that is, in the horizontal direction). Therefore, it is possible to further suppress the vibration of the liquid level 14 of the liquid phase refrigerant in the tank 13.

From the above, it is possible to prevent the liquid phase refrigerant in the tank 13 from flowing to the inlet of the compressor 2.

In this embodiment, the ribs 28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d of the tank plates 20 and 30 are used to form the divided tank regions 13a, 13b, 13c, 13d, 13e.

Therefore, the number of parts can be reduced as compared with the case where the divided tank regions 13a, 13b, 13c, 13d, and 13e are formed by using parts other than the tank plates 20 and 30. Along with this, the manufacturing cost of the accumulator 10 can be reduced as compared with the accumulator described in Patent Document 1.

In the present embodiment, the refrigerant pipe 40 is formed with an oil return hole 40c in which the lubricating oil contained in the gas-liquid two-phase refrigerant in the tank 13 enters. Therefore, the lubricating oil in the tank 13 can be discharged to the outside of the tank 13 through the oil return hole 40c of the refrigerant pipe 40, the refrigerant flow path, and the pipe outlet 40b and supplied to the inlet of the compressor 2.

As a result, the lubricating oil in the tank 13 can be appropriately returned to the compressor 2. Therefore, the compression mechanism constituting the compressor 2 is lubricated by the lubricating oil.

In the present embodiment, the filter 43 is provided in the vicinity of the oil return hole 40c. As a result, it is possible to prevent the oil return hole 40c from being clogged with impurities.

Further, the accumulator described in Patent Document 1 is joined in a state where a plurality of plates are laminated. Therefore, a large number of joints are required, and the reliability as an accumulator is lacking.

On the other hand, in the present embodiment, the accumulator 10 is composed of the tank plates 20 and 30 and the refrigerant pipe 40. Therefore, the number of joints can be reduced as compared with the accumulator described in Patent Document 1. Therefore, the reliability of the accumulator 10 can be ensured.

Further, the accumulator described in Patent Document 1 constitutes a plurality of tanks by laminating a plurality of plates. Therefore, the ratio of the volume of the entire tank to the volume of the accumulator is low.

On the other hand, in the present embodiment, the tank 13 is composed of the tank plates 20 and 30. Therefore, the ratio of the volume of the entire tank to the volume of the accumulator 10 can be increased. Along with this, the volume of the tank 13 can be secured by the accumulator 10 having a small volume.

(First modification)
In the first embodiment described above, an example in which the rib 28a of the tank plate 20 and the rib 38a of the tank plate 30 are joined to form a partition portion has been described, but instead of this, the following may be used.

That is, as shown in FIG. 7, the rib 28a of the tank plate 20 and the flat surface portion 39 of the tank plate 30 may be joined to form a partition portion. In this case, as shown in FIG. 7, the tank plate 30 is formed with a flat surface portion 39 instead of the rib 38a. The flat surface portion 39 has no ribs and is formed in a flat shape extending in the vertical direction and the width direction.

Alternatively, the rib 38a of the tank plate 30 and the flat surface portion of the tank plate 20 may be joined to form a partition portion. In this case, the tank plate 20 is formed with a flat surface portion instead of the rib 28a. The flat surface portion has no ribs and is formed in a flat shape extending in the vertical direction and the width direction.

Similarly, in the case of the ribs 28b and 38b, a rib is provided on one of the tank plates 20 and 30, a flat surface portion is provided on the other tank plate, and the flat surface portion is joined to the rib to form a partition portion. You may.

Similarly, in the case of ribs 28c and 38c, and in the case of ribs 28d and 38d, one of the tank plates 20 and 30 is provided with a rib, the other tank plate is provided with a flat surface portion, and the rib is flat. The portions may be joined to form a partition portion.

(Second modification)
In the second modification, as shown in FIG. 8, through holes 50 penetrating in the thickness direction may be provided in the ribs 28a and 38a of the tank plates 20 and 30 of the first embodiment. Thereby, it is possible to inspect whether or not the joint state of the ribs 28a and 38a is good.

Similarly, a through hole 50 that penetrates the ribs 28b and 38b in the thickness direction may be provided. A through hole 50 that penetrates the ribs 28c and 38c in the thickness direction may be provided. A through hole 50 that penetrates the ribs 28d and 38d in the thickness direction may be provided.

(Third modification example)
In the third modification, as shown in FIG. 9, a through hole 50 penetrating the rib 28a and the flat surface portion 39 of the first modification may be provided.

Similarly, a through hole 50 may be provided that penetrates the rib 28b and the flat surface portion 39 in the thickness direction. A through hole 50 may be provided that penetrates the rib 28b and the flat surface portion 39 in the thickness direction. A through hole 50 may be provided that penetrates the rib 28c and the flat surface portion 39 in the thickness direction. A through hole 50 may be provided that penetrates the rib 28d and the flat surface portion 39 in the thickness direction.

(Fourth modification)
In the second modification, as shown in FIG. 10, among the ribs 28a and 38a of the tank plates 20 and 30 of the first embodiment, only the rib 28a may be provided with a through hole 51 penetrating in the thickness direction. good. In this case, the through hole 51 is closed by the rib 38a.

Similarly, the through hole 51 may be provided only in the rib 28b among the ribs 28b and 38b. Of the ribs 28c and 38c, only the rib 28c may be provided with a through hole. Of the ribs 28d and 38d, only the rib 28c may be provided with a through hole.

Alternatively, a through hole may be provided only in the rib 38a among the ribs 28a and 38a. Of the ribs 28b and 38b, only the rib 38b may be provided with a through hole. Of the ribs 28c and 38c, only the rib 38c may be provided with a through hole. Of the ribs 28d and 38d, only the rib 38d may be provided with a through hole.

(Fifth modification)
In the fourth modification, as shown in FIG. 11, the through hole 51 may be provided only in the rib 28a of the rib 28a and the flat surface portion 39 of the first modification. Alternatively, a through hole may be provided only in the flat surface portion 39 of the rib 28a and the flat surface portion 39.

Similarly, of the rib 28b and the flat surface portion 39, the through hole 51 may be provided only in the rib 28b. Of the rib 28b and the flat surface portion 39, the through hole 51 may be provided only in the flat surface portion 39. Of the rib 28c and the flat surface portion 39, the through hole 51 may be provided only in the flat surface portion 39. Of the rib 28d and the flat surface portion 39, the through hole 51 may be provided only in the flat surface portion 39.

(Second Embodiment)
In the first embodiment, an example in which the accumulator 10 is configured by the tank plates 20 and 30 has been described. However, instead of this, the second embodiment in which the refrigeration cycle equipment 10A including the accumulator 10 and the inlet pipe 3a for the condenser is composed of the tank plates 20 and 30 will be described with reference to FIGS. 12 to 16.

As shown in FIGS. 12 and 13, the refrigerating cycle device 10A of the second embodiment is a combination of the accumulator 10 of the first embodiment and the inlet pipe 3a for a capacitor. Therefore, the description of the accumulator 10 will be simplified, and the capacitor inlet pipe 3a will be mainly described.

First, the condenser inlet pipe 3a is a heat exchanger pipe arranged between the outlet of the compressor 2 and the inlet of the condenser 3. The condenser inlet pipe 3a is a refrigerant pipe for guiding the high-pressure refrigerant discharged from the outlet of the compressor 2 to the inlet of the condenser 3.

The condenser inlet pipe 3a is arranged on the lower side in the vertical direction with respect to the accumulator 10. That is, the capacitor inlet pipe 3a is arranged on the lower side in the vertical direction with respect to the tank 13. In other words, the capacitor inlet pipe 3a is arranged in a predetermined direction orthogonal to the thickness direction with respect to the tank 13.

As shown in FIG. 14, the capacitor inlet pipe 3a includes a plate pipe portion 60 and a header pipe portion 61. The plate piping portion 60 is configured by combining the half-tube portion 62a of the tank plate 20 and the half-tube portion 62b of the tank plate 30.

The half-tube portion 62a is configured such that one side of the tank plate 20 in the thickness direction is convex to one side in the thickness direction, and the other side of the tank plate 20 in the thickness direction is recessed to one side in the thickness direction.

The half-tube portion 62b is configured such that one side of the tank plate 30 in the thickness direction is recessed to the other side in the thickness direction, and the other side of the tank plate 30 in the thickness direction is convex to the other side in the thickness direction.

The outlet 63 is opened on one side of the half-tube portion 62b in the width direction on the other side in the thickness direction. The outlet 63 is connected to the inlet of the capacitor 3. The header piping unit 61 is connected to the inlet 64 of the plate piping unit 60.

The inlet 64 of the plate piping portion 60 is arranged on the other side of the header piping portion 61 in the width direction. The inlet 64 of the plate piping portion 60 is configured by combining the recess 64a of the tank plate 20 and the recess 64b of the tank plate 30.

The recess 64a of the tank plate 20 is configured such that one side of the tank plate 20 in the thickness direction is convex to one side in the thickness direction, and the other side of the tank plate 20 in the thickness direction is recessed to one side in the thickness direction.

The recess 64b of the tank plate 30 is configured such that one side of the tank plate 30 in the thickness direction is recessed to the other side in the thickness direction, and the other side of the tank plate 30 in the thickness direction is convex to the other side in the thickness direction.

The header piping unit 61 connects between the inlet 64 of the plate piping unit 60 and the outlet of the compressor 2.

As described above, the condenser inlet pipe 3a is composed of the header pipe portion 61 and the plate pipe portion 60, and guides the high-pressure refrigerant discharged from the compressor 2 to the inlet of the capacitor 3.

In the present embodiment configured as described above, the header piping portion 61 is brazed and joined in a state of being assembled together with the tank plates 20 and 30 and the refrigerant piping 40. Therefore, the accumulator 10 and the header piping 61 form an integrally molded product by the header piping 61, the refrigerant piping 40, and the tank plates 20 and 30.

In the present embodiment, the accumulator 10 and the header piping portion 61 form an integrally molded product together with the condenser 3 and the evaporator 5 as shown in FIG.

According to the present embodiment described above, as shown in FIG. 16, the tank plates 20 and 30 form a condenser inlet pipe 3a which is arranged on the lower side in the vertical direction with respect to the tank 13 and is connected to the condenser 3. do.

The tank plates 20 and 30 are accumulators 10 that separate the gas-liquid two-phase refrigerant into a gas-phase refrigerant and a liquid-phase refrigerant in the tank 13, store the liquid-phase refrigerant, and discharge the gas-phase refrigerant from the tank 13 through a refrigerant pipe. To configure. The accumulator 10 and the capacitor inlet pipe 3a constitute an integrally molded product.

As described above, in the present embodiment, the number of devices constituting the steam compression refrigeration cycle 1 can be reduced as compared with the case where the accumulator 10 and the condenser inlet pipe 3a are independently configured.

(Third Embodiment)
In the second embodiment, an example in which the refrigeration cycle equipment 10A including the accumulator 10 and the inlet pipe 3a for the condenser is configured by the tank plates 20 and 30 has been described.

However, instead of this, refer to FIGS. 17, 18, 19, 19 and the like for a third embodiment in which the refrigerating cycle device 10B is configured by using the inner fins 600 arranged between the tank plates 200 and 300. explain.

The refrigeration cycle device 10B of the present embodiment is a combination of the accumulator 100 and the condenser inlet pipe 3b. The refrigeration cycle device 10B includes inner fins 600 arranged in a wavy shape between the tank plates 200 and 300, the refrigerant pipes 400 and 500, and the tank plates 200 and 300.

Similar to the tank plates 20 and 30 of the first embodiment, the tank plates 200 and 300 are arranged so as to face each other to form a rectangular and flat tank 13. The tank 13 is formed so as to expand in the width direction and the top-bottom direction.

The tank plate 200 is a first tank plate provided in place of the tank plate 20 of the first and second embodiments. As shown in FIGS. 18, 19, 20, 22, and 23, the tank plate 200 includes a front wall portion 21, side portions 22, 23, 24, 25, and a flange portion 201. The wall portion 21 is arranged so as to face the rear wall portion 31 of the tank plate 300. The front wall portion 21 is formed in a planar shape that expands in the vertical direction and also expands in the width direction.

Here, the top-bottom direction means the top-bottom direction in a state where the accumulator 100 is mounted on the housing of the air conditioner. The direction in which the tank plates 20 and 30 are lined up is called the thickness direction. The width direction is a horizontal direction, orthogonal to the top-bottom direction, and orthogonal to the thickness direction.

Hereinafter, for convenience of explanation, as shown in FIG. 19, the tank plate 200 side is one side in the thickness direction with respect to the tank plate 300 in the thickness direction, and the tank plate 300 side is the thickness direction with respect to the tank plate 200 in the thickness direction. The other side.

The front wall portion 21 is provided with ribs 28a, 28b, 28c, 28d, 28e, 29a, 29b, 29c, 29d, and a flange portion 201. The ribs 28a, 28b, 28c, 28d, and 28e are such that one side of the front wall portion 21 in the thickness direction is recessed in the other side in the thickness direction, and the other side of the front wall portion 21 in the thickness direction is convex in the other direction in the thickness direction. It is formed.

The ribs 28a, 28b, 28c, 28d, and 28e are each formed in the first direction. Hereinafter, the first direction in the ribs 28a, 28b, 28c, 28d, 28e is referred to as a longitudinal direction. The longitudinal direction of the ribs 28a, 28b, 28c, 28d, 28e of the present embodiment is the top-bottom direction. The ribs 28a, 28b, 28c, 28d, and 28e are arranged in the width direction at intervals. The ribs 28a, 28b, 28c, 28d, 28e are arranged in the width direction.

The rib 28a is arranged at a distance from the side portion 25. The end of the rib 28a on the improved side is connected to the side 24. The lower end of the rib 28a in the vertical direction is connected to the side 22.

The rib 28b is arranged on the opposite side in the width direction with respect to the rib 28a. The ribs 28b are arranged at intervals from the ribs 28a. The end of the rib 28b on the improved side is connected to the side 24. The lower end of the rib 28b in the vertical direction is connected to the side 22.

The rib 28c is arranged on the opposite side in the width direction with respect to the rib 28b. The ribs 28c are arranged at intervals from the ribs 28b. The end of the rib 28c on the improved side is connected to the side 24. The lower end of the rib 28c in the vertical direction is connected to the side 22.

The rib 28d is arranged on the opposite side in the width direction with respect to the rib 28c. The rib 28d is arranged at a distance from the rib 28c. The end of the rib 28d on the improved side is connected to the side 24. The lower end of the rib 28d in the vertical direction is connected to the side 22.

The rib 28e is arranged on the opposite side in the width direction with respect to the rib 28d. The rib 28e is arranged at one end in the width direction with respect to the side portion 23. The rib 28e is arranged at a distance from the rib 28d. The end of the rib 28e on the improvement side of the sky region is connected to the rib 29c. The lower side of the rib 28e in the vertical direction is connected to the side portion 22.

As shown in FIG. 22, such ribs 28a, 28b, 28c, 28d, 28e divide the inside of the tank 13 between the inner fin 600 and the tank plate 200, and the tank regions 122a, 122b, 122c, 122d, 122e , 122f.

The divided tank area 122a is formed between the rib 28a and the side portion 25 of the tank 13. The divided tank region 122b is formed between the ribs 28a and 28b of the tank 13. The divided tank region 122c is formed between the ribs 28b and 28c of the tank 13.

The divided tank area 122d is formed between the ribs 28c and 28d of the tank 13. The divided tank region 122e is formed between the ribs 28d and 28e of the tank 13. The split tank region 122f is formed between the rib 28e and the side portion 23 of the tank 13.

In the present embodiment, as shown in FIG. 21, the side portion 22 is arranged on the lower side in the vertical direction with respect to the front wall portion 21 as in the first embodiment. The side portion 23 is arranged on the other side in the width direction with respect to the front wall portion 21. The side portion 24 is arranged on the heavenly region improvement side with respect to the front wall portion 21. The side portion 25 is arranged on one side in the width direction with respect to the front wall portion 21.

The rib 29a is arranged on the heavenly region improvement side of the rib 28e. The rib 29a is connected to the side portion 24. The rib 29a is formed so as to be convex from the rib 28a to the other side in the thickness direction.

The rib 29b is arranged on the heavenly region improvement side of the rib 28c. The rib 29b is connected to the side portion 24. The rib 29b is formed so as to be convex from the rib 28c to the other side in the thickness direction.

In the present embodiment, the ribs 29a and 29b each play a role of suppressing the liquid-phase refrigerant flowing from the inlet 11 into the tank 13 from flowing to the pipe inlet 40a of the refrigerant pipe 40, as will be described later.

Specifically, the ribs 29a and 29b are formed so as to project from the inner wall 21a forming the tank 13 of the tank plate 300 toward the tank plate 200, respectively. The tip portions of the ribs 29a and 29b in the thickness direction are arranged on the other side in the thickness direction as compared with the tip portions of the ribs 28a, 28b, 28c and 28d in the thickness direction.

The ribs 29c and 29d are arranged between the rib 28a and the side portion 25, respectively. The ribs 29c and 29d are formed so that one side of the front wall portion 21 in the thickness direction is recessed to the other side in the thickness direction, and the other side of the front wall portion 21 in the thickness direction is convex to one side in the thickness direction. .. The ribs 29c and 29d are arranged at intervals in the vertical direction.

In the present embodiment, the ribs 29c and 29d each play a role of supporting the refrigerant pipe 400 from one side in the thickness direction, as will be described later.

The rib 29e is arranged on the lower side of the rib 29a in the vertical direction. The rib 28e is formed so as to be convex from the rib 29a to the other side in the thickness direction. The rib 28e is connected to the side portion 22. In the present embodiment, the rib 29e plays a role of supporting the refrigerant pipe 400 from one side in the thickness direction, as will be described later.

The tank plate 200 is formed with a recess 120a. The recess 120a, together with the recess 120b of the tank plate 300, constitutes a through hole 120. Further, the flange portion 201 is formed so as to surround the side portions 22, 23, 24, 25 from the top-bottom direction and the width direction.

In the tank plate 200 of the present embodiment, the ribs 28a, 28b, 28c, 28d, and 28e are formed so as to extend in the vertical direction, respectively. Therefore, when the accumulator 100 moves in the vertical direction, the refrigerant in the divided tank regions 122a, 122b, 122c, 122d, 122e, and 122f is suppressed from moving in the width direction.

The tank plate 300 is a second tank plate provided in place of the tank plate 30 of the first and second embodiments. As shown in FIGS. 17, 19, 20, 20, 24, 25, 26, and 27, the tank plate 300 includes a rear wall portion 31, side portions 32, 33, 34, 35, and a flange portion 301. To be equipped.

The rear wall portion 31 is arranged so as to face the front wall portion 21 of the tank plate 300. The rear wall portion 31 is formed in a planar shape that expands in the vertical direction and also expands in the width direction.

Ribs 38a, 38b, 38c, 38d, 38e are provided on the rear wall portion 31. The ribs 38a, 38b, 38c, 38d, and 38e are respectively recessed in the thickness direction on the other side of the rear wall portion 31, and convex on one side in the thickness direction of the rear wall portion 31. Is formed in.

The ribs 38a, 38b, 38c, 38d, and 38e are formed so as to extend in the first direction, respectively. Hereinafter, the first direction of the ribs 38a, 38b, 38c, 38d, 38e is referred to as a longitudinal direction. The longitudinal direction of the ribs 38a, 38b, 38c, 38d, 38e of the present embodiment is the top-bottom direction. The ribs 38a, 38b, 38c, 38d, and 38e are arranged in the width direction at intervals.

The rib 38a is arranged at a distance from the side portion 35. The end of the rib 38a on the improved side is connected to the side 34. The lower end of the rib 38a in the vertical direction is connected to the side portion 32.

The rib 38b is arranged on the opposite side in the width direction with respect to the rib 38a. The ribs 38b are arranged at intervals from the ribs 38a. The end of the rib 38b on the improved side is connected to the side 34. The lower end of the rib 38b in the vertical direction is connected to the side portion 32.

The rib 38c is arranged on the opposite side in the width direction with respect to the rib 38b. The ribs 38c are arranged at intervals from the ribs 38b. The end of the rib 38c on the improved side is connected to the side 34. The lower end of the rib 38c in the vertical direction is connected to the side portion 32.

The rib 38d is arranged on the opposite side in the width direction with respect to the rib 38c. The rib 38d is arranged at a distance from the rib 38c. The end of the rib 38d on the improvement side of the heavens is connected to the side 34. The lower end of the rib 38d in the vertical direction is connected to the side portion 32.

The rib 38e is arranged on the opposite side in the width direction with respect to the rib 38d. The rib 38e is arranged at a distance from the side portion 33. The rib 38e is arranged at a distance from the rib 38d. The end of the rib 38e on the improvement side of the sky region is connected to the rib 39d. The lower side of the rib 38e in the vertical direction is connected to the side portion 32.

As shown in FIG. 24, such ribs 38a, 38b, 38c, 38d, 38e divide the inside of the tank 13 between the inner fin 600 and the tank plate 300, and the tank regions 132a, 132b, 132c, 132d, 132e , 132f.

The divided tank area 132a is formed between the rib 38a and the side portion 35 of the tank 13. The divided tank region 132b is formed between the ribs 38a and 38b of the tank 13. The divided tank region 132c is formed between the ribs 38b and 38c of the tank 13.

The divided tank area 132d is formed between the ribs 38c and 38d of the tank 13. The divided tank region 132e is formed between the ribs 38d and 38e of the tank 13. The divided tank region 132f is formed between the rib 38e and the side portion 33 of the tank 13.

In the present embodiment, as shown in FIGS. 24 and 25, the side portion 32 is arranged on the lower side in the vertical direction with respect to the rear wall portion 31 as in the first embodiment. The side portion 33 is arranged on the opposite side in the width direction with respect to the rear wall portion 31. The side portion 34 is arranged on the heavenly region improvement side with respect to the rear wall portion 31. The side portion 35 is arranged on one side in the width direction with respect to the rear wall portion 31.

The rib 39a is arranged between the side portion 35 and the rib 38a. The rib 39a is arranged on the center side of the tank 13 in the vertical direction. The rib 39a is formed so that the other side of the rear wall portion 31 in the thickness direction is recessed on one side in the thickness direction, and one side of the rear wall portion 31 in the thickness direction is convex on the other side in the thickness direction.

The rib 39b is arranged on the heavenly region improvement side of the rib 38d. The rib 39b is connected to the side portion 34. The rib 39b is formed so as to be convex on one side in the thickness direction from the rib 38d.

Specifically, the rib 39b is formed so as to protrude from the tank plate 200 side from the inner wall 31a forming the tank 13 of the tank plate 300. Here, the tip portion of the rib 39b in the thickness direction is located on one side in the thickness direction with respect to the tip portion in the thickness direction of each of the ribs 38a, 38b, 38c, and 38d.

As described above, the ribs 39b and the ribs 29a and 29b each have a refrigerant flow path 180 for flowing the liquid phase refrigerant from the inlet 11 to the pipe inlet 40a between the tank plates 200 and 300 as shown in FIG. It constitutes an inflow suppression unit to be squeezed.

Specifically, the ribs 39b, 29a, and 29b play a role of suppressing the flow of the liquid phase refrigerant from the inlet 11 through the refrigerant flow path 180 to the pipe inlet 40a as shown by the arrow RE in FIG. The refrigerant flow path 180 is formed in a region surrounded by the tank plates 200, 300, and the inner fin 600.

Here, the arrangement relationship of the rib 39b, the ribs 29a, 29b, the inlet 11, and the pipe inlet 40a will be described with reference to FIG.

As shown in FIG. 19, a virtual surface 800 extending in the width direction and the top-bottom direction is set on one side in the thickness direction with respect to the inlet 11, the rib 39b, the ribs 29a, 29b, and the pipe inlet 40a.

The projection points formed on the virtual surface 800 when the inlet 11, ribs 39b, ribs 29a, 29b, and pipe inlet 40a are projected onto the virtual surface 800 as shown by the arrow TOE in FIG. 19 are projected from the other side in the thickness direction. The points are 801 and 802, 803, 804 and 805. The projection points 801, 802, 803, 804, and 805 are arranged in the width direction.

The rib 39c in FIG. 24 is arranged on the lower side of the rib 38a in the vertical direction. The rib 39c is connected to the side portion 32. The rib 39c is formed so as to be convex from the rib 38a on one side in the thickness direction. The rib 39c supports the refrigerant pipe 400 from the other side in the thickness direction.

The rib 39d is formed so as to intersect in the vertical direction and extend in the width direction. The rib 39d is formed so as to go downward in the vertical direction from one side in the width direction to the other side in the width direction. One side of the rib 39d in the width direction is connected to the side portion 34 and the rib 38d. The other side of the rib 39d in the width direction is connected to the side portion 33.

As described above, the ribs 38a, 38b, 38c, 38d, 38e divide the inside of the tank 13 between the inner fin 600 and the tank plate 300, as shown in FIG. , 132f.

The divided tank area 132a is formed between the rib 38a and the side portion 35 of the tank 13. The divided tank region 132b is formed between the ribs 38a and 38b of the tank 13. The divided tank region 132c is formed between the ribs 38b and 38c of the tank 13.

The divided tank area 132d is formed between the ribs 38c and 38d of the tank 13. The divided tank region 132e is formed between the ribs 38d and 38e of the tank 13. The divided tank region 132f is formed between the rib 38e and the side portion 33 of the tank 13.

The tank plate 300 is formed with an inlet 11, a recess 120b, and a flange portion 301. The inlet 11 penetrates the rear wall portion 31 of the tank plate 300 in the thickness direction. The entrance 11 is arranged on the heavenly region improvement side and the other side in the width direction of the rear wall portion 31. As will be described later, the gas-liquid two-phase refrigerant from the refrigerant outlet of the evaporator 5 flows into the inlet 11.

The recess 120b constitutes a through hole 120 together with the recess 120a of the tank plate 200. Further, the flange portion 301 is formed so as to surround the side portions 22, 23, 24, 25 from the top-bottom direction and the width direction.

In the present embodiment, as shown in FIG. 24, the side portion 32 is arranged on the lower side in the vertical direction with respect to the rear wall portion 31 as in the first embodiment. The side portion 33 is arranged on the opposite side in the width direction with respect to the rear wall portion 31. The side portion 34 is arranged on the heavenly region improvement side with respect to the rear wall portion 31. The side portion 35 is arranged on one side in the width direction with respect to the rear wall portion 31. Further, the flange portion 301 is formed so as to surround the side portions 32, 33, 34, 35 from the top-bottom direction and the width direction.

In the tank plate 300 of the present embodiment, the ribs 38a, 38b, 38c, 38d, and 38e are formed so as to extend in the vertical direction, respectively. Therefore, when the accumulator 100 moves in the vertical direction, the refrigerant in the divided tank regions 132a, 132b, 132c, 132d, 132e, 132f is suppressed from moving in the width direction.

The refrigerant pipe 400 is arranged between the tank plates 200 and 300 as shown in FIGS. 19 and 20. The refrigerant pipe 400 is arranged so as to be offset from the inner fin 600 of the tank 13. The refrigerant pipe 400 is formed in a J shape.

Specifically, as shown in FIG. 23, the refrigerant pipe 400 includes an upper pipe portion 401, an intermediate pipe portion 402, and a lower pipe portion 403.

The upper piping portion 401 is formed so as to extend from the top region improvement side end portion of the intermediate piping portion 402 to the other side in the width direction along the side portions 24 and 34. On the other side of the upper piping portion 401 in the width direction, a piping inlet 40a for entering the vapor phase refrigerant from inside the tank 13 is provided.

As shown in FIG. 18, the pipe inlet 40a is arranged above the center line Td in the vertical direction of the tank 13. The center line Td is a virtual line extending in the horizontal direction through the center point in the vertical direction of the tank 13. The pipe inlet 40a is arranged on the central side of the tank 13 in the width direction.

Here, as shown in FIG. 18, regions 700, 701, 702, and 703 are set so that the inside of the tank 13 is evenly divided into four in the width direction. In the present embodiment, the width direction center side means two regions 701 and 702 on the width direction center side of the regions 700, 701, 702, and 703. That is, the pipe inlet 40a is arranged in two regions 701 and 702 on the central side in the width direction of the regions 700, 701, 702, and 703 in the tank 13. In the present embodiment, as shown in FIGS. 27 and 19, there is a gap 412 between the inlet side end 411 formed on the pipe inlet 40a side of the outer wall 410 of the upper pipe portion 401 and the tank plate 200. It is provided. An interval 413 is provided between the inlet side end portion 411 of the outer wall 410 of the upper piping portion 401 and the tank plate 300.

The intermediate piping portion 402 is formed so as to extend downward from one side end in the width direction along the side portions 25 and 35 of the upper piping portion 401 in the vertical direction. The intermediate piping portion 402 is supported by ribs 29c and 29d from one side in the thickness direction. The intermediate piping portion 402 is supported by the rib 39a from the other side in the thickness direction.

The lower piping portion 403 is formed so as to extend from the lower end portion in the vertical direction of the intermediate piping portion 402 to the other side in the width direction along the side portions 22 and 32.

The lower piping portion 403 is supported from one side in the thickness direction by the rib 29e and the recess 120a. The lower piping portion 403 is supported from the other side in the thickness direction by the rib 39c and the recess 120b.

The other end of the lower piping portion 403 in the width direction protrudes to the outside of the tank 13 through the through hole 120. A pipe outlet 40b for discharging the refrigerant that has passed through the lower pipe portion 403 is provided at the other end of the lower pipe portion 403 in the width direction. A piping plug 404 forming a joint connected to the refrigerant inlet side of the compressor 2 is provided at the other end of the lower piping portion 403 in the width direction.

An oil return hole 40c is opened downward on the center side of the lower piping portion 403 in the width direction. Specifically, the oil return hole 40c is arranged below the center line Td in the vertical direction of the tank 13. The oil return hole 40c is arranged on the center side of the tank 13 in the width direction.

Here, the center side in the width direction means the two regions 701 and 702 on the center side in the width direction of the regions 700, 701, 702, and 703 as described above. The oil return hole 40c is a hole for allowing the lubricating oil contained in the liquid phase refrigerant in the tank 13 to flow into the refrigerant flow path in the lower piping portion 41.

As shown in FIG. 23, the oil return hole 40c of the present embodiment is provided between the ribs 41a and 41b of the lower piping portion 41. The ribs 41a and 41b are protrusions that are annularly projected outward in the radial direction about the axis CL of the lower piping portion 403 from the lower piping portion 41. The ribs 41a and 41b are arranged at intervals in the axial direction. The axis direction is the direction in which the axis CL extends.

Here, a filter 43 formed in a tubular shape is provided on the outer side in the radial direction about the axis CL with respect to the ribs 41a and 41b. The filter 43 will be arranged so as to cover the oil return hole 40c. The filter 43 filters the lubricating oil flowing into the oil return hole 40c to remove impurities.

As a result, the filter 43 is arranged with an interval 44 in the radial direction centered on the axis CL with respect to the oil return hole 40c. The interval 44 forms a refrigerant flow path through which the lubricating oil that has passed through the filter 43 flows toward the oil return hole 40c.

The inner fin 600 is arranged between the tank plates 200 and 300 as shown in FIGS. 18, 20, 25, and 27. The inner fins 600 are arranged so as to be offset from the refrigerant pipe 400 in the width direction and the top-bottom direction. In the inner fin 600, a metal plate material is formed in a wavy shape.

Specifically, the inner fin 600 has tops 601, 602, 603, 604, 605, 606, 607, 608, 609, and side 610, 611, 612, 613, 614, 615, 616, 617, 618, 619 is provided.

The tops 601 and 602, 603, 604, 605, 606, 607, 608, and 609 are formed so as to extend in the vertical direction and the width direction, respectively. The width direction of each of the tops 601 and 602, 603, 604, 605, 606, 607, 608, and 609 is larger than the dimension in the top-bottom direction.

The tops 601 and 602, 603, 604, 605, 606, 607, 608, and 609 are arranged at intervals in the vertical direction, respectively.

The tops 601, 603, 605, 607, and 609 are formed so that one side in the thickness direction is convex to the other side in the thickness direction and the other side in the thickness direction is convex to the other side in the thickness direction. The tops 601 and 603, 605, 607, and 609 each form ribs that are provided over the second direction and are convex toward the tank plate 300. Hereinafter, the second direction of the tops 601, 603, 605, 607, 609 is referred to as a longitudinal direction. The longitudinal direction of the tops 601, 603, 605, 607, 609 of this embodiment is the width direction.

The tops 602, 604, 606, and 608 are each formed so that one side in the thickness direction is convex to one side in the thickness direction and the other side in the thickness direction is convex to one side in the thickness direction. The top portions 602, 604, 606, and 608 each form ribs that are provided in the second direction and are convex toward the tank plate 200 side. The second direction of the tops 602, 604, 606, 608 is called the longitudinal direction. The longitudinal direction of the tops 602, 604, 606, 608 of the present embodiment is the width direction.

The side portions 610, 611, 612, 613, 614, 615, 616, 617, 618, and 619 are formed so as to expand in the thickness direction and the width direction, respectively. The side portions 610, 611, 612, 613, 614, 615, 616, 617, 618, and 619 are each larger in the width direction than in the thickness direction.

The side portion 610 is arranged on the heavenly region improvement side with respect to the top portion 601. The side portion 611 is arranged between the top portions 601 and 602. The side portion 612 is arranged between the top portions 602 and 603. The side portion 613 is arranged between the top portions 603 and 604. The side portion 614 is arranged between the top portions 604 and 605.

The side portion 615 is arranged between the top portions 605 and 606. The side portion 616 is arranged between the top portions 606 and 607. The side portion 617 is arranged between the top portions 607 and 608. The side portion 618 is arranged between the top portions 608 and 609. The side portion 619 is arranged on the lower side in the vertical direction with respect to the top portion 609.

The tops 602, 604, 606, and 608 of the inner fins 600 are brazed to the ribs 28a, 28b, 28c, 28d, and 28e of the front wall portion 21 of the tank plate 200.

Specifically, the inner fin 600 is joined to the tank plate 200 so that the longitudinal direction of the tops 602, 604, 606, 608 and the longitudinal direction of the ribs 28a, 28b, 28c, 28d, 28e are not parallel to each other. ..
Here, the longitudinal direction of the tops 602, 604, 606, 608 corresponds to the second direction, and the longitudinal direction of the ribs 28a, 28b, 28c, 28d, 28e corresponds to the first direction.

In other words, the inner fin 600 is joined to the tank plate 200 so that the longitudinal direction of the tops 602, 604, 606, 608 and the longitudinal direction of the ribs 28a, 28b, 28c, 28d, 28e are in a twisted positional relationship. ing.

The twisted positional relationship is a relationship in which the longitudinal directions of the tops 602, 604, 606, 608 and the longitudinal directions of the ribs 28a, 28b, 28c, 28d, 28e do not intersect and are not parallel.

The tops 601, 603, 605, 607, and 609 of the inner fins 600 are brazed to the ribs 38a, 38b, 38c, 38d, and 38e of the rear wall portion 31 of the tank plate 300.

Specifically, the inner fin 600 is joined to the tank plate 300 so that the longitudinal direction of the tops 601, 603, 605, 607, 609 and the longitudinal direction of the ribs 38a, 38b, 38c, 38d, 38e are not parallel to each other. There is.
Here, the longitudinal direction of the tops 601, 603, 605, 607, 609 corresponds to the second direction, and the longitudinal direction of the ribs 38a, 38b, 38c, 38d, 38e corresponds to the first direction.

In other words, the inner fin 600 is joined to the tank plate 300 so that the longitudinal direction of the tops 601, 603, 605, 607, 609 and the longitudinal direction of the ribs 38a, 38b, 38c, 38d, 38e are in a twisted positional relationship. Has been done. The twisted positional relationship is a relationship in which the longitudinal directions of the tops 601, 603, 605, 607, and 609 do not intersect and the longitudinal directions of the ribs 38a, 38b, 38c, 38d, and 38e do not intersect and are not parallel.

As a result, the tops 601, 602, 603, 604, 605, 606, 607, 608, 609 of the inner fin 600 are joined to the tank plate 200 or the tank plate 300.

As described above, the inner fin 600 includes side portions 610, 611, 612, 613, 614, 615, 616, 617, 618, 619 extending in the width direction. Therefore, the inner fin 600 can prevent the refrigerant in the tank 13 from moving in the vertical direction when the accumulator 100 moves in the vertical direction. Further, the inner fin 600 can prevent the liquid level from vibrating due to the refrigerant flowing into the tank 13.

A tank 13 is formed between the tank plates 200 and 300 configured in this way to separate and store the gas-liquid two-phase refrigerant flowing in through the inlet 11 into the liquid-phase refrigerant and the gas-phase refrigerant. ..

The tank plates 200 and 300, the refrigerant pipes 400 and 500, and the inner fin 600 of this embodiment are made of an aluminum alloy material containing aluminum.

The capacitor inlet pipe 3b of the present embodiment is arranged between the outlet of the compressor 2 and the inlet of the capacitor 3. The condenser inlet pipe 3b is a refrigerant pipe for guiding the high-pressure refrigerant discharged from the outlet of the compressor 2 to the inlet of the condenser 3. The capacitor inlet pipe 3b and the accumulator 100 constitute an integrally molded product.

The condenser inlet pipe 3b is arranged on the lower side in the vertical direction with respect to the accumulator 100. That is, the capacitor inlet pipe 3b is arranged on the lower side in the vertical direction (that is, in the direction orthogonal to the thickness direction) with respect to the tank 13.

As shown in FIGS. 17 and 23, the condenser inlet pipe 3b includes a plate pipe portion 60A and a refrigerant pipe 500. The plate piping portion 60A is configured by combining the half-tube portion 63a of the tank plate 200 and the half-tube portion 63b of the tank plate 300.

As shown in FIG. 18, the half-tube portion 63a is configured such that one side of the tank plate 200 in the thickness direction is convex to one side in the thickness direction and the other side of the tank plate 200 in the thickness direction is recessed to one side in the thickness direction. ing.

As shown in FIG. 24, the half-tube portion 63b is configured such that one side of the tank plate 300 in the thickness direction is recessed to the other side in the thickness direction and the other side of the tank plate 300 in the thickness direction is convex to the other side in the thickness direction. Has been done.

The outlet 63 is opened on one side of the half-tube portion 63b in the width direction on the other side in the thickness direction. The outlet 63 is connected to the inlet of the capacitor 3. The refrigerant pipe 500 is connected to the inlet 64 of the plate pipe portion 60.

The inlet 64 of the plate piping portion 60A is arranged on the other side of the header piping portion 61 in the width direction. The inlet 64 of the plate piping portion 60A is configured by combining a recess 64a of the tank plate 200 and a recess 64b of the tank plate 300.

The recess 64a of the tank plate 200 is configured such that one side of the tank plate 200 in the thickness direction is convex to one side in the thickness direction, and the other side of the tank plate 200 in the thickness direction is recessed to one side in the thickness direction.

The recess 64b of the tank plate 300 is configured such that one side of the tank plate 300 in the thickness direction is recessed in the other side in the thickness direction and the other side of the tank plate 300 in the thickness direction is convex in the other side in the thickness direction.

The tank plate 300 of the present embodiment is provided with a plurality of claw portions 310 that engage with the outer peripheral portion of the tank plate 200.

The refrigerant pipe 500 connects between the inlet 64 of the plate pipe portion 60A and the outlet of the compressor 2. One end of the refrigerant pipe 500 in the width direction constitutes the refrigerant outlet 501 and is joined to the inlet 64 of the plate pipe portion 60A. A pipe plug 504 forming a joint connected to the refrigerant outlet side of the compressor 2 is provided at the other end of the refrigerant pipe 500 in the width direction. The piping plug 504 is configured with a refrigerant inlet 502 discharged from the refrigerant outlet of the compressor 2.

As described above, the condenser inlet pipe 3b is composed of the refrigerant pipe 500 and the plate piping portion 60A, and guides the high-pressure refrigerant discharged from the compressor 2 to the inlet of the condenser 3.

In the present embodiment, as shown in FIGS. 17 and 24, a plurality of through holes 70a and a plurality of through holes 71a are provided between the refrigerant pipes 400 and 500 in the tank plate 300. The plurality of through holes 70a and the plurality of through holes 71a each penetrate the tank plate 300 in the thickness direction.

The plurality of through holes 70a are arranged in the width direction, respectively. The plurality of through holes 71a are arranged in the width direction, respectively. The plurality of through holes 70a are arranged on the heavenly region improvement side with respect to the plurality of through holes 71a.

As shown in FIGS. 18 and 21, a plurality of through holes 70b and a plurality of through holes 71b are provided between the refrigerant pipes 400 and 500 in the tank plate 200. The plurality of through holes 70a and the plurality of through holes 71b each penetrate the tank plate 300 in the thickness direction. The plurality of through holes 70b are arranged in the width direction, respectively. The plurality of through holes 71b are arranged in the width direction, respectively.

Each of the plurality of through holes 70a communicates with the corresponding through hole 70b among the plurality of through holes 70b. Each of the plurality of through holes 71b communicates with the corresponding through holes 70b among the plurality of through holes 71b. The plurality of through holes 70b are arranged on the heavenly region improvement side with respect to the plurality of through holes 71b.

The plurality of through holes 70a and 70b and the plurality of through holes 71a and 71b play a role of enhancing the heat insulating property between the accumulator 100 and the capacitor inlet pipe 3b.

As a method for joining the tank plates 200, 300, the refrigerant pipes 400, 500, and the inner fin 600 of the present embodiment, for example, brazing joining is used.

With the accumulator 100 configured in this way stationary, the amount of refrigerant set so that the liquid level 14 of the liquid phase refrigerant in the accumulator 100 is located below the pipe inlet 40a of the refrigerant pipe 400 in the vertical direction. Is pre-filled in the steam compression refrigeration cycle 1.

The accumulator 100 of the present embodiment may be integrally molded by brazing or the like together with the condenser 3, the pressure reducing valve 4, the evaporator 5, and the like. However, for convenience of explanation, a method for manufacturing the accumulator 100 alone will be described below in this embodiment.

First, in the first step, the tank plates 200 and 300, the inner fins 600, and the refrigerant pipes 400 and 500 are prepared separately.

Here, as the tank plates 200 and 300, the inner fins 600, and the refrigerant pipes 400 and 500, a lat material having a brazing material layer provided on the front surface or the back surface of a plate material made of an aluminum alloy material is used. The brazing filler metal layer is a layer made of brazing filler metal.

In the next step, the inner fins 600 and the refrigerant pipes 400 and 500 are sandwiched between the tank plates 200 and 300, and the tank plates 200 and 300 are aligned so as to face each other. In addition to this, a plurality of claws 310 of the tank plate 300 are engaged with the outer peripheral portion of the tank plate 200.

In the next step, with the tank plates 200 and 300 and the refrigerant pipes 400 and 500 combined, the brazing material layer is melted by heating in a high temperature furnace to melt the tank plates 200 and 300 and the refrigerant pipes 400 and 500. Are brazed and joined.

Specifically, the half-tube portion 63a of the flange portion 201 of the tank plate 200 and the half-tube portion 63b of the flange portion 301 of the tank plate 300 are brazed and joined.

In addition to this, the ribs 28a, 28b, 28c, 28d, 28e of the tank plate 200 and the tops 602, 604, 606, 608 of the inner fin 600 are brazed and joined.

Further, the ribs 38a, 38b, 38c, 38d, 38e of the tank plate 300 and the tops 601, 603, 605, 607, 609 of the inner fin 600 are brazed and joined.

In addition to this, the ribs 28c, 29d, 29e, and the recess 120a of the tank plate 200 and the refrigerant pipe 400 are brazed and joined. The ribs 39a and 39c and the recess 120b of the tank plate 300 and the refrigerant pipe 400 are brazed and joined.

As described above, the tank plates 200 and 300 and the refrigerant pipes 400 and 500 are integrated by brazing to form an integrally molded product.

Next, the operation of the steam compression refrigeration cycle 1 and the operation of the accumulator 100 of the present embodiment will be described.

First, the compressor 2 sucks the vapor phase refrigerant from the accumulator 100, compresses it, and discharges it as a high-pressure refrigerant. The capacitor 3 dissipates heat from the high-pressure refrigerant discharged from the compressor 2.
Next, the pressure reducing valve 4 reduces the pressure of the high-pressure refrigerant flowing out of the condenser 3. The evaporator 5 evaporates the low-pressure refrigerant that has passed through the pressure reducing valve 4 by endothermic reaction. The accumulator 100 separates the gas-liquid two-phase refrigerant that has passed through the evaporator 5 into a gas-phase refrigerant and a liquid-phase refrigerant, stores the liquid-phase refrigerant, and discharges the gas-phase refrigerant.

Specifically, the high-pressure refrigerant discharged from the refrigerant outlet of the compressor 2 flows into the refrigerant pipe 500 through the refrigerant inlet 502. The inflowing high-pressure refrigerant flows to the refrigerant inlet of the condenser 3 through the refrigerant outlet of the refrigerant pipe 500 and the outlet 63 of the plate piping portion 60A.

On the other hand, in the accumulator 100, the gas-liquid two-phase refrigerant that has passed through the evaporator 5 enters the tank 13 through the inlet 11. In the tank 13, the gas-liquid two-phase refrigerant is separated into a gas-phase refrigerant and a liquid-phase refrigerant, the vapor-phase refrigerant is stored in the upper side of the tank 13, and the liquid-phase refrigerant is stored in the lower side of the tank 13. Become.

Specifically, it is stored in a state of being separated into a gas phase refrigerant and a liquid phase refrigerant between the tank plate 200 and the inner fin 600. Between the tank plate 300 and the inner fin 600, the gas phase refrigerant and the liquid phase refrigerant are stored in a separated state.

At this time, the vapor-phase refrigerant in the tank 13 flows from the pipe outlet 40b to the refrigerant inlet of the compressor 2 through the pipe inlet 40a and the refrigerant flow path of the refrigerant pipe 40.

At this time, the lubricating oil contained in the liquid phase refrigerant in the tank 13 flows into the refrigerant flow path of the refrigerant pipe 40 through the filter 43, the interval 44, and the oil return hole 40c. The lubricating oil flowing through the refrigerant flow path flows from the pipe outlet 40b to the refrigerant inlet of the compressor 2. The lubricating oil is used for lubricating the compression mechanism and the like constituting the compressor 2.

At this time, the filter 43 removes impurities from the lubricating oil flowing from the inside of the tank 13 to the refrigerant flow path of the refrigerant pipe 40 through the oil return hole 40c. This prevents the oil return hole 40c from being clogged with impurities.

Further, the tank 13 is divided into divided tank areas 132a, 132b, 132c, 132d, 132e, 132f by ribs 38a, 38b, 38c, 38d, 38e.

Further, the tank 13 is divided into divided tank areas 122a, 122b, 122c, 122d, 122e, 122f by ribs 28a, 28b, 28c, 28d, 28e.

Therefore, when the accumulator 100 vibrates and the accumulator 100 moves in the width direction, the liquid phase refrigerant in the tank 13 is suppressed from moving in the width direction, and the liquid phase refrigerant in the tank 13 is the pipe of the refrigerant pipe 40. It is possible to prevent entering the entrance 40a.

On the other hand, the side portions 610, 611, 612, 613, 614, 615, 616, 617, 618, and 619 of the inner fin 600 are formed so as to extend in the width direction, respectively.

Therefore, when the accumulator 100 vibrates and the accumulator 100 moves in the vertical direction, the liquid phase refrigerant between the tank plate 200 and the inner fin 600 is suppressed from moving in the vertical direction. In addition to this, it is possible to prevent the liquid level from vibrating due to the refrigerant flowing into the tank 13. As a result, it is possible to prevent the liquid phase refrigerant in the tank 13 from entering the pipe inlet 40a of the refrigerant pipe 40.

According to the present embodiment described above, the accumulator 100 constitutes a vapor compression refrigeration cycle in which a refrigerant is circulated. The tank plates 200 and 300 are formed in a plate shape, respectively.

The tank plates 200 and 300 are arranged so as to face each other with the inner fin 600 and the refrigerant pipe 400 interposed therebetween, and separate the gas-liquid two-phase refrigerant flowing from the inlet 11 into the gas-phase refrigerant and the liquid-phase refrigerant. A tank 13 for storing the phase refrigerant is formed. The tank 13 is formed so as to expand in the width direction and the top-bottom direction.

The accumulator 100 includes a pipe inlet 40a for entering the gas phase refrigerant and a pipe outlet 40b arranged outside the tank 13 for discharging the vapor phase refrigerant, and the gas phase refrigerant in the tank 13 is supplied to the pipe inlet 40a and the pipe outlet 40b. It is provided with a refrigerant pipe 400 that is discharged to the outside of the tank 13 through the pipe.

Therefore, the accumulator 100 that separates the gas-liquid two-phase refrigerant into the liquid-phase refrigerant and the gas-phase refrigerant and discharges the gas-phase refrigerant while storing the liquid-phase refrigerant is provided in the tank plates 200, 300, the inner fin 600, and the refrigerant pipe 40. It can be composed of four parts such as.

As described above, the accumulator 10 as a refrigeration cycle device can be configured with a smaller number of parts than the accumulator described in Patent Document 1.

In the present embodiment, an inner fin 600 formed in a plate shape extending in the top-bottom direction and the width direction is provided between the tank plates 200 and 300. The direction in which the tank plates 200 and 300 are lined up is the thickness direction.

The width direction is the first orthogonal direction that is orthogonal to the thickness direction and parallel to the horizontal direction. The second orthogonal direction that is orthogonal to the thickness direction and intersects the width direction is defined as the top-bottom direction.

The tank plate 300 is provided with ribs 38a, 38b, 38c, 38d, 38e, which are first ribs that are convex in the tank 13 toward one side in the thickness direction in the vertical direction.

The tank plate 200 is provided with ribs 28a, 28b, 28c, 28d, 28e, which are first ribs that are convex in the tank 13 toward the other side in the thickness direction in the vertical direction.

Therefore, when the accumulator 100 moves in the width direction, the movement of the liquid phase refrigerant in the tank 13 in the width direction can be suppressed by the ribs 28a, 28b, 28c, 28d, and 28e.

The inner fin 600 is provided with top portions 601, 603, 605, 607, and 609, which are second ribs that are convex in the tank 13 toward the other side in the thickness direction in the vertical direction.

The inner fin 600 is provided with top portions 602, 604, 606, and 608, which are second ribs that are convex in the tank 13 toward one side in the thickness direction in the vertical direction.

Therefore, when the accumulator 100 moves in the vertical direction, the inner fin 600 can suppress the movement of the liquid phase refrigerant in the tank 13 in the vertical direction. In addition to this, it is possible to prevent the liquid level from vibrating due to the refrigerant flowing into the tank 13.

Here, when the ribs 28a to 28e and 38a to 38e are not formed on the tank plates 200 and 300 and the inner fins 600 are not provided, the accumulator 100 vibrates with the vibration of the vehicle. Then, the liquid level 14 of the liquid phase refrigerant in the tank 13 vibrates. Therefore, the liquid phase refrigerant in the tank 13 may enter the pipe inlet 40a of the refrigerant pipe 40.

On the other hand, in the present embodiment, ribs 28a to 28e and 38a to 38e are formed on the tank plates 200 and 300, and inner fins 600 are provided. Therefore, the vibration of the liquid level 14 of the liquid phase refrigerant in the tank 13 is suppressed. It is possible to prevent the liquid phase refrigerant in the tank 13 from entering the pipe inlet 40a of the refrigerant pipe 40.

From the above, it is possible to prevent the liquid phase refrigerant in the tank 13 from flowing to the inlet of the compressor 2.

According to the above-described embodiment, the following effects can be obtained.

(1) The pipe inlet 40a of the upper pipe portion 42 of the refrigerant pipe 40 is arranged above the center line Td in the tank 13. Therefore, it is possible to prevent the liquid phase refrigerant in the tank 13 from entering the pipe inlet 40a of the upper pipe portion 42 of the refrigerant pipe 40.

(2) The pipe inlet 40a of the upper pipe portion 42 of the refrigerant pipe 40 is arranged on the center side of the tank 13 in the width direction. Therefore, even if the accumulator 100 is tilted and one side of the tank 13 in the width direction and the other side in the width direction are different in the top-bottom direction, the liquid-phase refrigerant in the tank 13 is still in the upper piping portion 42 of the refrigerant pipe 40. It is possible to make it difficult to enter the pipe inlet 40a.

(3) A gap 412 is formed between the inlet side end 411 formed on the pipe inlet 40a side of the outer wall 410 of the refrigerant pipe 400 and the tank plate 200. Therefore, it is possible to prevent the liquid phase refrigerant from entering the pipe inlet 40a of the refrigerant pipe 400 along the inner wall 21a of the tank plate 200 forming the tank 13.

(4) An interval 413 is formed between the inlet side end portion 411 of the refrigerant pipe 400 and the tank plate 300. Therefore, it is possible to prevent the liquid phase refrigerant from entering the pipe inlet 40a of the refrigerant pipe 400 along the inner wall 31a of the tank plate 300 forming the tank 13.

(5) The ribs 39b and the ribs 29a and 29b are configured to narrow the refrigerant flow path for flowing the liquid phase refrigerant from the inlet 11 to the pipe inlet 40a between the tank plates 200 and 300, respectively. .. Therefore, it is possible to prevent the liquid phase refrigerant from entering the pipe inlet 40a of the refrigerant pipe 400 from the inlet 11.

(6) The refrigerant pipe 40 is formed with an oil return hole 40c in which the lubricating oil contained in the gas-liquid two-phase refrigerant in the tank 13 enters. Therefore, the lubricating oil in the tank 13 can be discharged to the outside of the tank 13 through the oil return hole 40c of the refrigerant pipe 40, the refrigerant flow path, and the pipe outlet 40b and supplied to the inlet of the compressor 2.

As a result, the lubricating oil in the tank 13 can be appropriately returned to the compressor 2. Therefore, the compression mechanism constituting the compressor 2 is lubricated by the lubricating oil.

(7) A filter 43 is provided in the vicinity of the oil return hole 40c. As a result, it is possible to prevent the oil return hole 40c from being clogged with impurities.

Here, for example, when the filter 43 is covered with impurities while the filter 43 is close to the oil return hole 40c, the oil return hole 40c is clogged with impurities.

On the other hand, in the present embodiment, an interval 44 is provided between the oil return hole 40c and the filter 43 to form a flow path through which the lubricating oil flows. Therefore, even when the filter 43 is covered with impurities, it is possible to prevent the oil return holes 40c from being clogged with impurities.

(8) The oil return hole 40c is arranged in the tank 13 below the center line Td in the top-bottom direction and on the center side in the width direction of the tank 13. Therefore, even if the accumulator 100 is tilted and one side and the other side of the tank 13 in the width direction are different in the top-bottom direction, the oil return hole 40c tends to be lower than the liquid level 14. This makes it easier to guide the lubricating oil in the tank 13 into the oil return hole 40c.

(Fourth Embodiment)
In the third embodiment, an example has been described in which the intermediate pipe portion 402 of the refrigerant pipe 400 is formed so as to extend along the side portions 25 and 35 of the tank plate 200.300.

Instead of this, in the accumulator 100, see FIG. 28 for a fourth embodiment in which the intermediate pipe portion 402 of the refrigerant pipe 400 is arranged at a position away from the side portions 25 and 35 of the tank plate 200.300. explain.

In the present embodiment, similarly to the first embodiment, the pipe inlet 40a is arranged on the top region improvement side and the center side in the width direction of the tank 13. The pipe inlet 40a is opened on the other side in the width direction.

The refrigerating cycle device 10B of the present embodiment and the refrigerating cycle device 10B of the third embodiment differ only in the refrigerant pipe 400 of the accumulator 100, and the other configurations are the same. Omit.

(Fifth Embodiment)
In the fourth embodiment, an example in which the intermediate pipe portion 402 of the refrigerant pipe 400 is arranged at a position away from the side portions 25 and 35 of the tank plate 200.300 in the accumulator 100 has been described.

Instead, in the accumulator 100, the intermediate pipe portion 402 of the refrigerant pipe 400 is arranged at a position away from the side portions 25 and 35 of the tank plate 200.300, and the upper pipe portion 401 is formed in an L shape. The fifth embodiment will be described with reference to FIG. 29.

In the present embodiment, similarly to the first embodiment, the pipe inlet 40a of the upper pipe portion 401 is arranged on the top region improvement side and the center side in the width direction of the tank 13. The pipe inlet 40a is opened on the improvement side of the heaven region.

The refrigerating cycle device 10B of the present embodiment and the refrigerating cycle device 10B of the fourth embodiment differ only in the refrigerant pipe 400 of the accumulator 100, and the other configurations are the same. Omit.

(Sixth Embodiment)
In the third embodiment, an example in which ribs 29a, 29b, and 39b are provided in order to prevent the liquid phase refrigerant flowing into the tank 13 from the inlet 11 from flowing to the pipe inlet 40a of the refrigerant pipe 400 has been described.

Instead of this, in the refrigeration cycle equipment 10B, a sixth embodiment in which the tank plate 300 is provided with the protrusion 11a will be described with reference to FIGS. 30, 31, and 32.

The refrigeration cycle device 10B of the present embodiment is configured by arranging inner fins 600 between the tank plates 200 and 300, substantially similar to the third embodiment. Hereinafter, the differences between the refrigeration cycle equipment 10B of the present embodiment and the refrigeration cycle equipment 10B of the third embodiment will be described.

The protrusion 11a of the present embodiment is provided on the rear wall portion 31 of the tank plate 300 in place of the ribs 39b and 39d of FIG. 24. The protrusion 11a is provided on the lower side of the tank plate 300 in the vertical direction with respect to the inlet 11.

The protrusion 11a is formed so as to protrude in one direction from the tank plate 300. The protrusion 11a is formed by burring the tank plate 300. The protrusion 11a is formed so as to proceed downward in the vertical direction from one side in the width direction toward the other side.

The protrusion 11a of the present embodiment plays a role of suppressing the liquid phase refrigerant that has flowed into the tank 13 through the inlet 11 from the refrigerant outlet of the evaporator 5 from flowing to the pipe inlet 40a of the refrigerant pipe 40.

As shown in FIG. 32, the rib 29b of the present embodiment is provided on the rib 28d instead of the rib 28c in the tank plate 200. The ribs 29c and 29d are provided in the divided tank area 122a of the tank plate 200. The ribs 29c and 29d are formed so that one side of the front wall portion 21 of the tank plate 200 in the thickness direction is recessed in the other side in the thickness direction and the other side in the thickness direction is convex in the other side in the thickness direction.

The rib 29f is formed so as to project from the rib 28e to the other side in the thickness direction. The rib 29h is formed so as to project from the rib 28b to the other side in the thickness direction. The ribs 29c, 29d, 29e, 29f, and 29h play a role of supporting the refrigerant pipe 400 from one side in the thickness direction.

A rib 29e is provided in the divided tank area 122f of the tank plate 200 of the present embodiment. The rib 29e is formed so that one side of the front wall portion 21 in the thickness direction is convex to the other side in the thickness direction and the other side in the thickness direction is convex to the other side in the thickness direction.

According to the present embodiment described above, in the accumulator 100, an inner fin 600 formed in a plate shape extending in the top-bottom direction and the width direction is provided between the tank plates 200 and 300.

Therefore, the ribs 28a, 28b, 28c, 28d, 28e of the tank plate 200 and the ribs 38a, 38b, 38c, 38d, 38e of the tank plate 300 move the liquid phase refrigerant in the tank 13 in the vertical direction along the wall surface. This disperses and suppresses fluctuations in the liquid phase refrigerant. At the same time, the tops 602, 604, 606, and 608 of the inner fin 600 suppress the liquid phase refrigerant in the tank 13 from moving in the vertical direction.

From the above, it is possible to prevent the liquid phase refrigerant in the tank 13 from flowing to the inlet of the compressor 2.

(7th Embodiment)
In the sixth embodiment, a protrusion is formed on the rear wall portion 31 of the tank plate 300 in order to prevent the liquid phase refrigerant flowing into the tank 13 from the evaporator 5 through the inlet 11 from entering the pipe inlet 40a of the refrigerant pipe 40. An example in which 11a is provided has been described.

However, instead of this, in order to prevent the liquid phase refrigerant that has flowed into the tank 13 from the evaporator 5 through the inlet 11 from entering the pipe inlet 40a of the refrigerant pipe 40, a refrigerant adjusting unit 110 is provided at the inlet 11. A seventh embodiment will be described with reference to FIGS. 33A-33D.

The refrigerant adjusting unit 110 of the present embodiment is fitted into the burring 111 provided at the inlet 11 of the tank plate 300.

The main body of the refrigerant adjusting unit 110 has a hollow cylindrical shape, and a part of the side surface thereof is an opening 112. The opening 112 is installed so as to be opened in a direction different from the direction of the refrigerant pipe inlet 40a.

The refrigerant flows into the refrigerant adjusting unit 110 from the inlet 11, and is discharged into the tank 13 through the opening 112 of the refrigerant adjusting unit 110.

As described above, the refrigerant adjusting unit 110 can prevent the liquid phase refrigerant that has flowed into the tank 13 through the inlet 11 from the refrigerant outlet of the evaporator 5 from entering the pipe inlet 40a of the refrigerant pipe 40.

(8th Embodiment)
In the first embodiment, an example in which ribs 41a and 41b are provided in the lower pipe portion 41 of the refrigerant pipe 40 and a space is provided between the filter 43 and the oil return hole 40c has been described.

However, instead of this, with reference to FIG. 34, the eighth embodiment in which the lower pipe portion 41 of the refrigerant pipe 40 is provided with the reduced diameter portion 403a and the gap 44 is provided between the filter 43 and the oil return hole 40c. explain.

The reduced diameter portion 403a of the lower piping portion 41 of the refrigerant pipe 40 is smaller than the radial dimension centered on the axis EL than the other piping portions other than the reduced diameter portion 403a of the lower piping portion 41. The axis EL is the axis of the lower piping portion 41. The oil return hole 40c is provided in the reduced diameter portion 403a.

The filter 43 is formed in a cylindrical shape so as to cover the reduced diameter portion 403a. As a result, an interval 44 is provided between the filter 43 and the oil return hole 40c. The interval 44 constitutes a lubricating oil flow path for guiding the lubricating oil that has passed through the filter 43 to the oil return hole 40c.

As a result, even if the filter 43 is covered with impurities, it is possible to prevent the oil return hole 40c from being clogged with impurities.

(9th Embodiment)
In the first embodiment, an example in which ribs 41a and 41b are provided in the lower pipe portion 41 of the refrigerant pipe 40 and a space is provided between the filter 43 and the oil return hole 40c has been described.

However, instead of this, the ninth embodiment in which the filters 425 and 427 are held by the clips 420 with respect to the lower piping portion 41 will be described with reference to FIGS. 35 and 36.

As shown in FIG. 35, the clip 420 of the ninth embodiment is made of a metal plate and is formed so as to cover from the lower side in the vertical direction. The clip 420 holds the filters 425 and 427 with respect to the lower piping portion 41 by elastic force. The clip 420 is formed with a window portion 421 that is open to the lower side.

As shown in FIG. 36, the filter 425 is formed so as to cover the oil return hole 40c of the lower piping portion 41. The filter 425 is composed of fibers constituting a plurality of refrigerant flow paths that allow the lubricating oil that has passed through the filter 427 to flow through the oil return holes 40c.

As shown in FIG. 36, the filter 427 is arranged on the outer side in the radial direction about the axis EL with respect to the filter 425. The filter 427 removes impurities from the lubricating oil that has passed through the window portion 421 of the clip 420.

According to the present embodiment described above, the filter 427 is arranged radially outside the axis EL with respect to the oil return hole 40c of the lower piping portion 41. Therefore, the filter 427 can remove impurities from the lubricating oil that has passed through the window portion 421 of the clip 420.

In the present embodiment, the filter 425 is arranged between the oil return hole 40c of the lower piping portion 41 and the filter 427. The filter 425 is composed of fibers constituting a plurality of lubricating oil flow paths that allow the lubricating oil that has passed through the filter 427 to flow through the oil return holes 40c.

From the above, even if the filter 427 is covered with impurities, it is possible to prevent the oil return hole 40c from being clogged with impurities.

(10th Embodiment)
In the ninth embodiment, an example in which the filters 425 and 427 are arranged between the clip 420 and the lower piping portion 41 has been described.

However, instead of this, the tenth embodiment in which the filter 427 is arranged radially outside the axis EL with respect to the clip 420 will be described with reference to FIGS. 37 and 38.

As shown in FIG. 37, the clip 420 of the present embodiment is made of a metal plate and is formed so as to cover from the lower side in the vertical direction. The clip 420 is held in the lower piping portion 41 by an elastic force. The window portion 421 of the clip 420 is arranged so as to communicate with the oil return hole 40c of the lower piping portion 41. The filter 427 is arranged radially outside the clip 420 about the axis EL.

The filter 427 is arranged so as to cover the window portion 421 of the clip 420. The filter 427 is supported by the clip 420.

According to the present embodiment described above, the filter 427 is arranged radially outside the axis EL with respect to the oil return hole 40c of the lower piping portion 41. Therefore, the filter 427 can remove impurities from the lubricating oil that has passed through the window portion 421 of the clip 420.

In the present embodiment, the window portion 421 of the clip 420 is arranged between the oil return hole 40c of the lower piping portion 41 and the filter 427. The window portion 421 of the clip 420 constitutes a lubricating oil flow path that allows the lubricating oil that has passed through the filter 427 to flow through the oil return hole 40c. As a result, even if the filter 427 is covered with impurities, it is possible to prevent the oil return hole 40c from being clogged with impurities.

(Other embodiments)
(1) In the first and second embodiments described above, an example in which the L-shaped pipe is used as the refrigerant pipe 40 has been described, but instead of this, the following (a), (b) and (c) have been described. ) May be used. (A) The U-shaped pipe may be used as the refrigerant pipe 40. In the refrigerant pipe 40, a pipe inlet 40a for entering the vapor phase refrigerant and a pipe outlet 40b for exiting the vapor phase refrigerant are opened on the upper side.

In this case, it is possible to further suppress the flow of the liquid phase refrigerant in the tank 13 to the inlet of the compressor 2 through the refrigerant pipe 40 in a state where the vehicle is stopped and the accumulator 10 is not vibrated. (B) The pipe extending straight in the vertical direction may be the refrigerant pipe 40. In the refrigerant pipe 40, the pipe inlet 40a into which the vapor phase refrigerant enters is opened on the upper side, and the pipe outlet 40b on which the vapor phase refrigerant is discharged is opened on the upper side. (C) The refrigerant pipe 40 may be a pipe having a shape other than the straight extending pipe or the U-shaped pipe.

(2) In the first to tenth embodiments described above, an example in which the tank 13 is divided into the divided tank areas 13a to 13g by the ribs 28a to 28d and 38a to 38d has been described. However, instead of this, as shown in FIG. 39, a part of the refrigerant pipe 40 may be formed by ribs 28b, 28c, 38b, 38c.

In the example of FIG. 39, the divided tank region 13b formed by the ribs 28b, 28c, 38b, 38c constitutes the upper piping portion. The lower piping portion 41 is connected to the divided tank region 13b. The ribs 28b and 28c are connected on the lower side in the vertical direction. The ribs 38b and 38c are connected on the lower side in the vertical direction.

The ribs 28a to 28d and 38a to 38d are described by omitting the ribs 28a, 28b, 28c and 28d and the ribs 38a, 38b, 38c and 38d.

(3) In the first to tenth embodiments described above, an example using ribs 28a to 28d and 38a to 38d extending in the vertical direction (that is, the vertical direction) has been described, but instead of this, the following (a) (B) (c) may be used.

(A) Ribs 28a to 28d and 38a to 38d extending in the vertical direction (that is, in the lateral direction) may be used.

(B) Ribs 28a to 28d and 38a to 38d formed in a V shape may be used. (C) Ribs 28a to 28d and 38a to 38d that intersect in the vertical direction and extend in the horizontal intersecting direction may be used.

(4) In the first to tenth embodiments described above, an example in which the filter 43 is provided in the vicinity of the oil return hole 40c in the tank 13 has been described, but instead, the filter 43 is provided in the vicinity of the inlet 11 in the tank 13. A filter 43 may be provided.

(5) In the first to tenth embodiments described above, an example in which the ribs 28a to 28d and the ribs 38a to 38d are joined has been described, but instead of this, the following (d) and (e) are performed. May be good. (D) The ribs 28a to 28d and the ribs 38a to 38d may not be joined to each other. (E) Some of the ribs 28a to 28d are joined to the corresponding ribs of the ribs 38a to 38d, and the remaining ribs of the ribs 28a to 28d other than some of the ribs are of the ribs 38a to 38d. It may not be joined to the corresponding rib.

(6) In the first and second embodiments described above, examples of joining tank plates 20 and 30 using ribs 28a to 28d, 38a to 38d, and a refrigerant pipe 40 have been described. However, instead of this, a separate component other than the ribs 28a to 28d and 38a to 38d may be adopted, and the tank plates 20 and 30 may be joined by the separate component.

(7) In the second embodiment described above, an example in which the inlet pipe 3a for a capacitor as a pipe for a heat exchanger is formed by the tank plates 20 and 30 has been described.

However, instead of this, the evaporator inlet pipe as the heat exchanger pipe may be configured by the tank plates 20 and 30. The evaporator inlet pipe is an inlet pipe for guiding the low-pressure refrigerant flowing from the pressure reducing valve 4 to the inlet of the evaporator 5. The evaporator inlet pipe is connected between the outlet of the pressure reducing valve 4 and the inlet of the evaporator 5.

(8) In the first to tenth embodiments described above, an example in which the divided tank regions 13a, 13b, 13c, 13d, and 13e are arranged in the horizontal direction (that is, in the horizontal direction) has been described. f) It may be like (g). (F) The divided tank regions 13a, 13b, 13c, 13d, 13e may be arranged in the vertical direction (that is, in the vertical direction). (G) The divided tank regions 13a, 13b, 13c, 13d, and 13e may be arranged in a direction that intersects in the vertical direction and intersects in the horizontal direction.

(9) In the first to second embodiments described above, an example in which the capacitor inlet pipe 3a is arranged on the lower side in the vertical direction with respect to the tank 13 has been described, but instead of this, the following (h) (i) (i) ) May be used. (H) The capacitor inlet pipe 3a may be arranged on one side in the width direction or on the other side in the width direction with respect to the tank 13. (I) The capacitor inlet pipe 3a may be arranged on the top area improvement side with respect to the tank 13.

(10) In the first and second embodiments described above, an example in which the inlet 11 of the tank 13 is formed by the tank plate 30 has been described, but instead of this, the following (i) and (j) can be used. good. (I) The inlet 11 of the tank 13 may be formed by the tank plate 20. (J) The inlet 11 of the tank 13 may be formed by the tank plates 20 and 30.

(11) In the second embodiment described above, an example in which the outlet 63 of the plate piping portion 60 is formed on the tank plate 30 has been described, but instead of this, (k) and (l) may be used. (K) The outlet 63 of the plate piping portion 60 may be formed on the tank plate 20. (L) The outlet 63 of the plate piping portion 60 may be formed by the tank plates 20 and 30.

(12) In the third to tenth embodiments described above, an example in which the capacitor inlet pipe 3b is arranged on the lower side in the vertical direction with respect to the tank 13 has been described, but instead of this, the following (m) (n) (n) ) May be used. (M) The capacitor inlet pipe 3b may be arranged on one side in the width direction or on the other side in the width direction with respect to the tank 13. (N) The capacitor inlet pipe 3b may be arranged on the top area improvement side with respect to the tank 13.

(13) In the third to tenth embodiments described above, an example in which an interval 412 is provided between the inlet side end portion 411 of the outer wall 410 of the upper piping portion 401 and the tank plates 200 and 300 has been described.

Instead, in the first and second embodiments, as in the third to tenth embodiments, between the inlet side end portion 411 of the outer wall 410 of the upper piping portion 401 and the tank plates 200 and 300. May be provided with an interval of 412.

(14) In the third to tenth embodiments, ribs 39b, ribs 28a, and 28b for narrowing the refrigerant flow path for flowing the liquid phase refrigerant from the inlet 11 to the pipe inlet 40a are provided between the tank plates 200 and 300. The provided example has been described.

Instead of this, in the first and second embodiments, as in the third to tenth embodiments, the refrigerant that allows the liquid phase refrigerant to flow from the inlet 11 to the pipe inlet 40a between the tank plates 200 and 300. Ribs 39b, ribs 28a, and 28b for narrowing the flow path may be provided.

(15) In the third to tenth embodiments described above, the accumulator 100 in which the inner fins 600 are arranged between the tank plates 200 and 300 has been described. However, instead of this, in the first and second embodiments, as in the third to tenth embodiments, the inner fins 600 may be arranged between the tank plates 20 and 30 in the accumulator 10. good.

(16) In the third embodiment, the ribs 29a, 29b, and 38b are provided in order to prevent the liquid phase refrigerant from flowing from the inlet 11 to the pipe inlet 40a. In the sixth embodiment, in order to prevent the liquid phase refrigerant from flowing from the inlet 11 to the pipe inlet 40a, an example is shown in which the protrusion 11a is provided on the lower side in the vertical direction with respect to the inlet 11 by burring.

Instead of this, in order to suppress the flow of the liquid phase refrigerant from the inlet 11 to the pipe inlet 40a, and to suppress the flow of the liquid phase refrigerant from the inlet 11 to the pipe inlet 40a, ribs 29a, 29b, 38b are used. Both with the protrusion 11a may be provided.
(17) In the first to tenth embodiments described above, an example in which the accumulator 10 constitutes an in-vehicle air conditioner has been described, but the accumulator 10 is not limited to the steam compression type refrigeration cycle 1 for the in-vehicle air conditioner. Other vapor compression refrigeration cycles may be configured.
The other vapor compression refrigeration cycle is a vapor compression refrigeration cycle that constitutes various refrigeration equipment such as air conditioners for mobile objects other than automobiles, household air conditioners, building air conditioners, and refrigerators.

(18) In the third to tenth embodiments, an example in which the longitudinal direction of the ribs 28a, 28b, 28c, 28d, 28e of the tank plate 200 is the top-bottom direction has been described. However, instead of this, the longitudinal direction of the ribs 28a, 28b, 28c, 28d, 28e may be a direction other than the top-bottom direction as long as it is an intersecting direction (for example, an orthogonal direction) with respect to the thickness direction. Similarly, the longitudinal direction of the ribs 38a, 38b, 38c, 38d, 38e of the tank plate 200 may be a direction other than the top-bottom direction as long as it is an intersecting direction (for example, an orthogonal direction) with respect to the thickness direction.
(19) In the third to tenth embodiments, an example in which the longitudinal direction of the tops 601, 602, 603, 604, 605, 606, 607, 608, 609 of the inner fin 600 is the width direction has been described.
However, instead of this, the longitudinal direction of the tops 601, 602, 603, 604, 605, 606, 607, 608, 609 of the inner fin 600 is an intersecting direction (for example, an orthogonal direction) with respect to the thickness direction. If so, it may be in a direction other than the width direction.
(20) The present disclosure is not limited to the above-described embodiment, and can be changed as appropriate. Further, the above-described embodiments are not unrelated to each other, and can be appropriately combined unless the combination is clearly impossible. Further, in each of the above embodiments, it goes without saying that the elements constituting the embodiment are not necessarily essential except when it is clearly stated that they are essential and when they are clearly considered to be essential in principle. stomach. Further, in each of the above-described embodiments, when numerical values such as the number, numerical values, quantities, and ranges of the constituent elements of the embodiments are mentioned, when it is clearly stated that they are particularly essential, and in principle, the number is clearly limited to a specific number. It is not limited to the specific number except when it is done. Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of a component or the like, the shape, unless otherwise specified or limited in principle to a specific shape, positional relationship, etc. It is not limited to the positional relationship.

(summary)
According to the first aspect described in some or all of the first embodiment, the second embodiment, and the other embodiments, the refrigerating cycle device is a refrigerating cycle device constituting the refrigerating cycle. A first tank plate formed in a plate shape is provided.

The refrigeration cycle equipment is formed in a plate shape and is arranged so as to face the first tank plate, and together with the first tank plate, the gas-liquid two-phase refrigerant flowing in from the tank inlet is the gas-liquid refrigerant and the liquid. A second tank plate is provided to form a tank that is separated and stored in the phase refrigerant. The refrigeration cycle equipment is arranged between the first tank plate and the second tank plate, and includes a refrigerant pipe having a pipe inlet for entering the vapor phase refrigerant in the tank and a pipe outlet arranged outside the tank. The refrigerant pipe discharges the vapor phase refrigerant in the tank to the outside of the tank through the pipe inlet and the pipe outlet.

According to the second viewpoint, when the direction in which the first tank plate and the second tank plate are lined up is the line-up direction, the refrigerant pipes are joined to the second tank plate side in the line-up direction of the first tank plate. There is. Further, the refrigerant pipe is joined to the first tank plate side in the alignment direction of the second tank plate.

Therefore, the strength between the first tank plate and the second tank plate, that is, the strength of the refrigeration cycle equipment can be ensured.

According to the third viewpoint, the refrigerant pipe is formed in an L shape.

According to the fourth viewpoint, a partition portion for partitioning the inside of the tank into a plurality of divided tank areas is provided. Each of the plurality of split tank areas stores a liquid phase refrigerant.

This prevents the liquid level of the liquid phase refrigerant in the tank from vibrating even if the refrigeration cycle equipment vibrates. Therefore, it is possible to prevent the liquid phase refrigerant in the tank from being discharged to the outside of the tank through the refrigerant pipe.

According to the fifth viewpoint, the first tank plate and the second tank plate are formed in a plate shape extending in the vertical direction and the horizontal direction. The plurality of divided tank areas are formed so as to be arranged in the horizontal direction by the partition portion.

As a result, even if the refrigeration cycle equipment vibrates, the vibration of the liquid level of the liquid phase refrigerant in the tank is further suppressed.

According to the sixth viewpoint, each of the plurality of divided tank areas is formed so as to extend in the vertical direction by the partition portion.

According to the seventh viewpoint, one of the first tank plate and the second tank plate is provided with a rib protruding toward the other tank plate. The ribs contact the other tank plate to form a partition together with the other tank plate. Therefore, since the partition portion can be composed of the first tank plate and the second tank plate, it is possible to suppress an increase in the number of parts.

According to the eighth viewpoint, the rib formed on one tank plate is joined to the other tank plate.

Therefore, since one tank plate and the other tank plate are joined, the strength of the refrigeration cycle equipment can be increased.

According to the ninth aspect, the refrigeration cycle equipment includes an inner fin arranged between the first tank plate or the second tank plate.

The inner fin has a wavy shape, and its top is joined to the first plate and the second plate, respectively.

According to the tenth viewpoint, the first tank plate (200) and the second tank plate (300) have ribs (38a to 38e, 28a to 28e) that are convex toward the inner fin side in the first direction. It is provided over. The inner fin is provided with a top portion extending in the second direction. The rib and the top are joined so that the first direction of the rib and the second direction of the top are not parallel.

According to the eleventh viewpoint, the tank is formed so as to expand in the vertical direction and the horizontal direction. The pipe inlet is located above the center line in the vertical direction of the tank and on the center side in the horizontal direction of the tank.

According to the twelfth aspect, a gap is formed between the inlet side end formed on the pipe inlet side and the first tank plate in the outer wall of the refrigerant pipe, and the inlet side end and the second tank plate are formed. There is an interval between them.

According to the thirteenth viewpoint, one of the first tank plate and the second tank plate projects toward the other tank plate, and the liquid-phase refrigerant is applied from the tank inlet to the pipe inlet of the refrigerant pipe. It is provided with an inflow suppression unit that suppresses the flow.

According to the fourteenth viewpoint, a refrigerant flow path for flowing a vapor phase refrigerant is provided between the pipe inlet and the pipe outlet in the refrigerant pipe. The refrigerant pipe is formed with an oil return hole through which the lubricating oil contained in the liquid phase refrigerant in the tank enters the refrigerant flow path. Lubricating oil in the tank is discharged to the outside of the tank through the oil return hole of the refrigerant pipe, the refrigerant flow path, and the pipe outlet.

Therefore, the lubricating oil can be satisfactorily discharged to the outside through the refrigerant pipe.

According to the fifteenth viewpoint, the oil return hole is arranged below the center line in the vertical direction of the tank and on the central side in the horizontal direction of the tank.

Therefore, even if the refrigeration cycle equipment is tilted with respect to the horizontal direction, the lubricating oil can easily enter the oil return hole.

According to the 16th viewpoint, a filter is provided which is arranged in the tank and removes impurities from the lubricating oil flowing through the oil return holes in order to prevent the oil return holes from being clogged with impurities contained in the lubricating oil.

Therefore, it is possible to prevent the oil return hole from being clogged by impurities.

According to the 17th viewpoint, the filter is formed so as to cover the oil return hole.

According to the eighteenth viewpoint, the filters are arranged at intervals from the oil return holes.

Therefore, even if the filter is covered with impurities, it is possible to prevent the oil return holes from being clogged by impurities.

According to the nineteenth viewpoint, the first tank plate and the second tank plate provide an accumulator that separates and stores the gas-phase refrigerant and the liquid-phase refrigerant in the tank and discharges the gas-phase refrigerant from the tank through the refrigerant pipe. Constitute.

Further, the first tank plate and the second tank plate form a heat exchanger pipe connected to the heat exchanger. The accumulator and heat exchanger piping constitute an integrally molded product.

According to the twentieth viewpoint, the heat exchanger pipes are arranged in a predetermined direction with respect to the tank when the direction orthogonal to the direction in which the first tank plate and the second tank plate are lined up is set as a predetermined direction.

According to the 21st viewpoint, the heat exchanger is a capacitor that constitutes a refrigeration cycle and cools the refrigerant by heat exchange. The heat exchanger piping is a piping for guiding the high-pressure refrigerant discharged from the compressor to the inlet of the condenser.

Claims (21)

1. Refrigeration cycle equipment that composes the refrigeration cycle
   The first tank plate (20, 200) formed in a plate shape and
   The gas-liquid two-phase refrigerant which is formed in a plate shape and is arranged so as to face the first tank plate and flows in from the tank inlet (11) together with the first tank plate is a gas-phase refrigerant and a liquid. A second tank plate (30, 300) forming a tank (13) that is separated and stored in the phase refrigerant, and
   A pipe inlet (40a) arranged between the first tank plate and the second tank plate and into which the gas phase refrigerant in the tank enters and a pipe outlet (40b) arranged outside the tank are provided. , The refrigerant pipes (40, 400) that discharge the gas phase refrigerant in the tank to the outside of the tank through the pipe inlet and the pipe outlet.
   Refrigeration cycle equipment equipped with.
2. When the direction in which the first tank plate and the second tank plate are lined up is defined as the line-up direction,
   The refrigerant pipe is joined to the second tank plate side of the first tank plate in the alignment direction.
   The refrigerating cycle device according to claim 1, wherein the refrigerant pipe is joined to the first tank plate side of the second tank plate in the alignment direction.
3. The refrigerating cycle device according to claim 1 or 2, wherein the refrigerant pipe is formed in an L shape.
4. A partition portion (28a, 28b, 28c, 28d, 38a, 38b, 38c, 38d) for partitioning the inside of the tank into a plurality of divided tank areas (13a, 13b, 13c, 13d, 13e) is provided.
   The refrigeration cycle device according to any one of claims 1 to 3, wherein each of the plurality of divided tank regions stores the liquid phase refrigerant.
5. The first tank plate and the second tank plate are formed in a plate shape that extends in the vertical direction and the horizontal direction.
   The refrigeration cycle apparatus according to claim 4, wherein the plurality of divided tank regions are formed so as to be arranged in the horizontal direction by the partition portion.
6. The refrigeration cycle device according to claim 5, wherein each of the plurality of divided tank areas is formed so as to extend in the vertical direction by the partition portion.
7. Of the first tank plate and the second tank plate, one tank plate is provided with a rib protruding toward the other tank plate side.
   The refrigeration cycle apparatus according to any one of claims 4 to 6, wherein the ribs contact the other tank plate to form the partition portion together with the other tank plate.
8. The refrigeration cycle device according to claim 7, wherein the rib is joined to the other tank plate.
9. An inner fin (600) arranged between the first tank plate (200) and the second tank plate (300) and formed in a wavy shape is provided.
   The refrigeration cycle apparatus according to any one of claims 1 to 3, wherein the tops (601 to 609) of the inner fins are joined to the first tank plate or the second tank plate.
10. The first tank plate and the second tank plate are provided with ribs (38a to 38e, 28a to 28e) that are convex toward the inner fin side in the first direction.
    The inner fin is provided with the top portion extending in the second direction.
    The refrigeration cycle device according to claim 9, wherein the rib and the top are joined so that the first direction of the rib and the second direction of the top of the inner fin are not parallel to each other.
11. The tank is formed so as to expand in the vertical direction and the horizontal direction.
    The refrigeration cycle device according to claim 9 or 10, wherein the pipe inlet is located above the center line (Td) of the tank in the vertical direction and on the center side of the tank in the horizontal direction.
12. A gap (412) is formed between the inlet side end (411) formed on the pipe inlet side of the outer wall (410) of the refrigerant pipe and the first tank plate, and the inlet side end and the inlet side end are described. The refrigerating cycle apparatus according to any one of claims 1 to 11, wherein an interval (413) is formed between the second tank plate and the second tank plate.
13. The liquid-phase refrigerant flows from the tank inlet to the pipe inlet of the refrigerant pipe so as to project toward the other tank plate on one of the first tank plate and the second tank plate. The refrigerating cycle apparatus according to any one of claims 1 to 11, further comprising an inflow suppressing unit (29a, 29b, 39b) for suppressing.
14. A refrigerant flow path through which the gas phase refrigerant flows is provided between the pipe inlet and the pipe outlet of the refrigerant pipe.
    The refrigerant pipe is formed with an oil return hole (40c) in which the lubricating oil contained in the liquid phase refrigerant in the tank enters the refrigerant flow path.
    The refrigeration according to any one of claims 1 to 13, wherein the lubricating oil in the tank is discharged to the outside of the tank through the oil return hole of the refrigerant pipe, the refrigerant flow path, and the outlet of the pipe. Cycle equipment.
15. The refrigerating cycle device according to claim 14, wherein the oil return hole is arranged below the center line (Td) in the vertical direction of the tank and on the central side in the horizontal direction of the tank.
16. A filter (43) is provided which is arranged in the tank and removes the impurities from the lubricating oil flowing through the oil return holes in order to prevent the oil return holes from being clogged with impurities contained in the lubricating oil. The refrigeration cycle device according to claim 15.
17. The refrigeration cycle device according to claim 16, wherein the filter is formed so as to cover the oil return hole.
18. The refrigeration cycle device according to claim 16 or 17, wherein the filter is arranged with a space (44) between the filter and the oil return hole.
19. The first tank plate and the second tank plate provide an accumulator that separates and stores the gas-phase refrigerant and the liquid-phase refrigerant in the tank and discharges the gas-phase refrigerant from the tank through the refrigerant pipe. Further, the first tank plate and the second tank plate form a heat exchanger pipe (3a) connected to the heat exchanger (3).
    The refrigeration cycle device according to any one of claims 1 to 18, wherein the accumulator and the heat exchanger piping constitute an integrally molded product.
20. When the direction orthogonal to the direction in which the first tank plate and the second tank plate are lined up is set as a predetermined direction,
    The refrigeration cycle device according to claim 19, wherein the heat exchanger piping is arranged in the predetermined direction with respect to the tank.
21. The heat exchanger is a capacitor (3) that constitutes the refrigeration cycle and cools the refrigerant by heat exchange.
    The refrigeration cycle device according to claim 19 or 20, wherein the heat exchanger piping is a piping for guiding the high-pressure refrigerant discharged from the compressor (2) to the inlet of the condenser. The refrigeration cycle device according to any one of claims 1 to 18, wherein the accumulator and the heat exchanger piping constitute an integrally molded product.

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