WO2016170751A1

WO2016170751A1 - Cold storage heat exchanger

Info

Publication number: WO2016170751A1
Application number: PCT/JP2016/001971
Authority: WO
Inventors: 淳安部井; 佑輔鬼頭; 河地　典秀
Original assignee: 株式会社デンソー
Priority date: 2015-04-21
Filing date: 2016-04-11
Publication date: 2016-10-27
Also published as: JP2016203766A; JP6540190B2

Abstract

Provided is a cold storage heat exchanger comprising: a plurality of refrigerant flow paths (45) which have refrigerant passageways and which are disposed so that air passageways are formed by creating intervals between the refrigerant flow paths; fins (46) provided to the air passageways; a first header tank with which one end side of the plurality of refrigerant flow paths communicates; a second header tank with which the other end side of the plurality of refrigerant flow paths communicates; and a cold storage material (60) that is cooled by evaporation of a refrigerant that has been decompressed by a decompressor when a compressor is driven, but is allowed to radiate cold when the compressor is stopped. The cold storage material is arranged in a region where the air flow of the air passageways is not hindered. Due to this configuration, it is possible to increase the amount of cold storage material arranged while reducing the influence on the circulation of air.

Description

Cold storage heat exchanger

Cross-reference of related applications

This application is based on Japanese Patent Application No. 2015-086613 filed on Apr. 21, 2015, the disclosure of which is incorporated herein by reference.

The present disclosure relates to a compressor that compresses and discharges a refrigerant, a radiator that cools a refrigerant that has reached a high temperature, and a refrigerating heat exchanger that forms a refrigeration cycle apparatus together with a decompressor that decompresses the cooled refrigerant and evaporates the refrigerant. .

Conventionally, a refrigeration cycle apparatus is used as an air conditioner. Attempts have been made to provide limited cooling even when the refrigeration cycle apparatus is stopped. For example, in a vehicle air conditioner, a refrigeration cycle apparatus is driven by a traveling engine. For this reason, if the engine stops while the vehicle is temporarily stopped, the refrigeration cycle apparatus stops. In order to provide limited cooling during such a temporary stop, a cold storage heat exchanger in which a cold storage material is added to the evaporator has been proposed. For example, a cold storage heat exchanger described in Patent Document 1 is known.

In the cold storage heat exchanger described in Patent Document 1, the cold storage material is arranged only in the air flow path in order to increase the cooling efficiency of the cold storage material to cool the air when the engine is stopped. Although it is necessary to increase the number of cool storage materials in order to further increase the cooling efficiency during the temporary stop of the vehicle, there is a limit to increasing the number of cool storage materials in the conventional technology arranged only in the air flow path. In addition, since the air flow passage is originally intended to exchange heat by circulating air, it is necessary to place the regenerator material in a range that does not excessively affect the air flow rate, and there is a limit to increasing the regenerator material. was there.

JP 2010-91250 A

The present disclosure has been made in view of the above, and an object thereof is to provide a cold storage heat exchanger that can increase the amount of the cold storage material while reducing the influence on the air flow.

According to one aspect of the present disclosure, the cold storage heat exchanger that evaporates the refrigerant includes a plurality of refrigerants each having a refrigerant passage through which the refrigerant circulates and arranged to form an air passage with a space between each other. Provided such that the flow path, the fins provided in the air passage, the first header tank provided so that one end sides of the plurality of refrigerant flow paths communicate with each other, and the other end side of the plurality of refrigerant flow paths communicate with each other. The second header tank thus formed, and a regenerator material that cools by evaporating the refrigerant decompressed by the decompressor when the compressor is driven and cools when the compressor is stopped. The regenerator material is arranged in a region that does not hinder the air flow in the air passage.

The refrigerant that is cooled by evaporating the refrigerant depressurized by the pressure reducer when the compressor is driven is disposed in a region that does not obstruct the air flow in the air passage while being cooled when the compressor is stopped. The amount of the regenerator material can be increased while reducing the influence on the air flow.

According to the present disclosure, it is possible to provide a cold storage heat exchanger that can increase the amount of the cold storage material while reducing the influence on the air flow.

It is a block diagram showing a refrigerating cycle device using an evaporator concerning a 1st embodiment of this indication. It is a top view of the evaporator in FIG. It is a side view of the evaporator in FIG. FIG. 4 is a cross-sectional view showing a IV-IV cross section of FIG. 2. FIG. 5 is a cross-sectional view showing a VV cross section of FIG. 3. FIG. 5 is a cross-sectional view corresponding to FIG. 4 illustrating an evaporator according to a second embodiment of the present disclosure. It is sectional drawing equivalent to FIG. 5 which shows the evaporator which concerns on 2nd Embodiment of this indication. It is sectional drawing equivalent to FIG. 4 which shows the evaporator which concerns on 3rd Embodiment of this indication. It is sectional drawing equivalent to FIG. 4 which shows the evaporator which concerns on 4th Embodiment of this indication. It is sectional drawing equivalent to FIG. 5 which shows the evaporator which concerns on 4th Embodiment of this indication. It is sectional drawing equivalent to FIG. 5 which shows the evaporator which concerns on 5th Embodiment of this indication. It is a perspective view showing a refrigerant channel and a cool storage material of an evaporator concerning a 6th embodiment of this indication. It is a figure which shows typically the flow of the refrigerant | coolant in 6th Embodiment from 1st Embodiment of this indication. It is a schematic diagram which shows an example of the flow of the refrigerant | coolant which concerns on the modification of this indication. It is a schematic diagram which shows an example of the flow of the refrigerant | coolant which concerns on the modification of this indication. It is a schematic diagram which shows an example of the flow of the refrigerant | coolant which concerns on the modification of this indication. It is a schematic diagram which shows an example of the flow of the refrigerant | coolant which concerns on the modification of this indication. It is a schematic diagram which shows an example of the flow of the refrigerant | coolant which concerns on the modification of this indication.

Hereinafter, a plurality of modes for carrying out the present disclosure will be described with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not explicitly stated unless there is a problem with the combination. Is also possible.
(First embodiment)
FIG. 1 is a block diagram illustrating a configuration of a refrigeration cycle apparatus 1 using an evaporator 40 (cold storage heat exchanger) as a first embodiment of the present disclosure. The refrigeration cycle apparatus 1 is used in a vehicle air conditioner. The refrigeration cycle apparatus 1 includes a compressor 10, a radiator 20, a decompressor 30, and an evaporator 40. These components are connected in an annular shape by piping and constitute a refrigerant circulation path.

The compressor 10 is driven by an internal combustion engine that is a power source 2 (PS) for traveling the vehicle. For this reason, when the power source 2 stops, the compressor 10 also stops. The compressor 10 sucks the refrigerant from the evaporator 40, compresses it, and discharges it to the radiator 20.

The heat radiator 20 cools the high-temperature refrigerant. The radiator 20 is also called a condenser. The decompressor 30 decompresses the refrigerant cooled by the radiator 20. The decompressor 30 can be provided by a fixed throttle, a temperature expansion valve, or an ejector.

The evaporator 40 evaporates the refrigerant decompressed by the decompressor 30 and cools the medium. The evaporator 40 cools the air supplied to the passenger compartment. The refrigeration cycle apparatus 1 can further include an internal heat exchange for exchanging heat between the high-pressure side liquid refrigerant and the low-pressure side gas refrigerant, and a receiver or accumulator tank element that stores excess refrigerant. The power source 2 can be provided by an internal combustion engine or an electric motor.

FIG. 2 is a plan view of an evaporator 40 as a cold storage heat exchanger according to the first embodiment. FIG. 3 is a side view of FIG. FIG. 4 is an enlarged cross-sectional view showing a part of the IV-IV cross section of FIG. FIG. 5 is an enlarged cross-sectional view showing a part of the VV cross section of FIG.

2 and 3, the evaporator 40 has a refrigerant passage member branched into a plurality. The refrigerant passage member is provided by a metal passage member such as aluminum. The refrigerant passage member is provided by a first header 41, a second header 42, a third header 43, and a fourth header 44 that are positioned in pairs, and a plurality of refrigerant flow paths 45 that connect the headers. ing.

2 and 3, the first header 41 and the second header 42 form a pair, and are arranged in parallel with a predetermined distance from each other. The third header 43 and the fourth header 44 also form a set and are arranged in parallel with a predetermined distance from each other. The first header 41 and the third header 43 are disposed above the refrigerant flow path 45 in the gravity direction, and the second header 42 and the fourth header 44 are disposed below the refrigerant flow path 45 in the gravity direction.

A plurality of refrigerant flow paths 45 are arranged at equal intervals between the first header 41 and the second header 42. Each refrigerant channel 45 communicates with the corresponding first header 41 and second header 42 at one end thereof. A first heat exchange section 48 is formed by the first header 41, the second header 42, and a plurality of refrigerant flow paths 45 arranged therebetween.

A plurality of refrigerant flow paths 45 are arranged at equal intervals between the third header 43 and the fourth header 44. Each refrigerant channel 45 communicates with the corresponding third header 43 and fourth header 44 at the other end. A second heat exchanging portion 49 is formed by the third header 43, the fourth header 44, and a plurality of refrigerant flow paths 45 arranged therebetween.

As a result, the evaporator 40 has a first heat exchange part 48 and a second heat exchange part 49 arranged in two layers. With respect to the air flow direction, the second heat exchange unit 49 is arranged on the upstream side, and the first heat exchange unit 48 is arranged on the downstream side.

A joint as a refrigerant inlet is provided at the end of the first header 41. The inside of the first header 41 is partitioned into a first partition and a second partition by a partition plate provided substantially at the center in the length direction. Correspondingly, the plurality of refrigerant flow paths 45 are divided into a first group corresponding to the first section and a second group corresponding to the second section.

The refrigerant is supplied to the first section of the first header 41. The refrigerant is distributed from the first section to a plurality of refrigerant flow paths 45 belonging to the first group. The refrigerant flows into the second header 42 through the first group and is collected. The refrigerant is distributed again from the second header 42 to the plurality of refrigerant flow paths 45 belonging to the second group. The refrigerant flows into the second section of the first header 41 through the second group. Thus, in the 1st heat exchange part 48, the flow path which flows a refrigerant | coolant in a U shape is formed.

A joint as a refrigerant outlet is provided at the end of the third header 43. The inside of the third header 43 is partitioned into a first partition and a second partition by a partition plate provided substantially at the center in the length direction. Correspondingly, the plurality of refrigerant flow paths 45 are divided into a first group corresponding to the first section and a second group corresponding to the second section.

The first section of the third header 43 is adjacent to the second section of the first header 41. The first section of the third header 43 and the second section of the first header 41 are in communication.

The refrigerant flows from the second section of the first header 41 into the first section of the third header 43. The refrigerant is distributed from the first section to a plurality of refrigerant flow paths 45 belonging to the first group. The refrigerant flows into the fourth header 44 through the first group and is collected. The refrigerant is distributed again from the fourth header 44 to the plurality of refrigerant flow paths 45 belonging to the second group. The refrigerant flows into the second section of the third header 43 through the second group. Thus, in the 2nd heat exchange part 49, the flow path which flows a refrigerant | coolant in a U shape is formed. The refrigerant in the second section of the third header 43 flows out from the refrigerant outlet and flows toward the compressor 10.

The refrigerant flow path 45 is a multi-hole pipe having a plurality of refrigerant passages therein. The refrigerant channel 45 is also called a flat tube. This multi-hole tube can be obtained by an extrusion manufacturing method or a manufacturing method in which a plate is bent. The plurality of refrigerant passages extend along the longitudinal direction of the refrigerant flow path 45 and open at both ends of the refrigerant flow path 45. The plurality of refrigerant flow paths 45 are arranged in a row. In each row, the plurality of refrigerant channels 45 are arranged so that their main surfaces face each other. The plurality of refrigerant flow paths 45 partition an air passage for heat exchange with air and an accommodating portion for accommodating a cold storage material container, which will be described later, between two refrigerant flow paths 45 adjacent to each other. .

The evaporator 40 includes fin members for increasing the contact area with the air supplied to the passenger compartment. The fin member is provided by a plurality of corrugated fins 46. The fins 46 are disposed in an air passage partitioned between two adjacent refrigerant flow paths 45. The fin 46 is thermally coupled to the two adjacent refrigerant flow paths 45. The fins 46 are joined to the two adjacent refrigerant flow paths 45 by a joining material excellent in heat transfer. A brazing material can be used as the bonding material. The fin 46 has a shape in which a thin metal plate such as aluminum is bent in a wave shape, and includes an air passage called a louver.

The evaporator 40 further has a plurality of cold storage material containers 47. The cold storage material container 47 is made of metal such as aluminum. The cold storage material container 47 has a flat cylindrical shape. The cool storage material container 47 divides a room for accommodating the cool storage material inside by combining two middle plates. The cool storage material container 47 has a wide main surface on both surfaces. The two main walls that provide these two main surfaces are each arranged in parallel with the refrigerant flow path 45. The cool storage material container 47 is disposed between two adjacent refrigerant flow paths 45.

In FIG. 2, the plurality of refrigerant flow paths 45 are arranged at substantially constant intervals. A plurality of gaps are formed between the plurality of refrigerant flow paths 45. In the plurality of gaps, a plurality of fins 46 and a plurality of cool storage material containers 47 are arranged with a predetermined regularity. A part of the gap is an air passage. The remaining part of the gap is an accommodating part. A cold storage material container 47 is disposed in the housing portion.

Subsequently, in addition to the cool storage material container 47, a first embodiment in which the cool storage material is arranged so as not to disturb the air flow in the air passage will be described with reference to FIGS. As shown in FIGS. 4 and 5, one end of the coolant channel 45 is inserted into the first header 41 and the third header 43. Side plates 50 are provided outside the plurality of refrigerant flow paths 45 arranged.

A partition wall 411 is provided inside the first header 41. The partition wall 411 is provided in close contact with the inner wall of the first header 41. The partition wall 411 partitions the inside of the first header 41 into two or more spaces. One end of the refrigerant channel 45 is provided so as to penetrate the partition wall 411 from the lower side (lower in the gravitational direction) to the upper side (upward in the gravitational direction) shown in the drawing. The plurality of refrigerant passages of the refrigerant flow channel 45 communicate with at least one of the spaces partitioned by the partition wall 411. The cold storage material 60 is disposed in a lower space between the partition wall 411 and the inner wall of the first header 41 and from which one end of the coolant channel 45 does not protrude. The cold storage material 60 may be arranged in a space in the first header 41 where the plurality of refrigerant passages of the refrigerant flow path 45 are not in communication.

A partition wall 431 is provided inside the third header 43. The partition wall 431 is provided in close contact with the inner wall of the third header 43. The partition wall 431 partitions the inside of the third header 43 into two or more spaces. One end of the refrigerant channel 45 is provided so as to penetrate the partition wall 431 from the lower side (lower in the gravitational direction) to the upper side (upward in the gravitational direction) shown in the drawing. The plurality of refrigerant passages of the refrigerant channel 45 communicate with at least one of the spaces partitioned by the partition wall 431. The cold storage material 60 is disposed in a lower space between the partition wall 431 and the inner wall of the first header 43 and from which one end of the refrigerant channel 45 does not protrude. The cool storage material 60 may be arranged in a space in the third header 43 where the plurality of refrigerant passages of the refrigerant flow path 45 are not in communication.

In this way, the cool storage material 60 is replaced with the first header 41 and the third header by a simple method of providing the partition wall 411 and the partition wall 431 inside the first header 41 and the third header 43 arranged above the gravity direction. 43 can be disposed inside. Since the cold storage material 60 is disposed only in the space below the gravity direction where the refrigerant flow path 45 does not protrude from the partition wall 411 and the partition wall 431, the cold storage material 60 can exhibit the cold storage effect without inhibiting the flow of the refrigerant. it can.

More specifically, the refrigerant stops flowing when the automobile on which the refrigeration cycle apparatus 1 is mounted stops. However, when the refrigerant remaining in the evaporator 40 evaporates and gasifies, it is cooled by the regenerator 60 and liquefied again. It is supplied again into the refrigerant flow path 45. By this resupply, cold air can be supplied through the first heat exchange unit 48 and the second heat exchange unit 49 which are the core portions.

Further, in general, in a heat exchanger, it is advantageous for performance improvement to reduce the pressure loss on the refrigerant side, but the portion of the insertion allowance of the refrigerant flow path 45 into the first header 41 and the third header 43 is The refrigerant flows in the first header 41 and the third header 43 cause a pressure loss. Therefore, by providing the

partition walls

411 and 431 as described above, flattening the inside of the

first headers

41 and 43 is also effective in terms of pressure loss.
(Second Embodiment)
Then, 2nd Embodiment which arrange | positions a cool storage material so that the flow of the air of an air passage may not be inhibited is demonstrated, referring FIG.6 and FIG.7.

The cold storage material 61 is disposed inside the first header 41 and the third header 43 and between the refrigerant flow path 45, the inner wall of the first header 41, and the inner wall of the third header 43. The cold storage material 61 is filled in a cylindrical container, and is arranged at a predetermined distance from one end of the refrigerant flow path 45.

Compared to the first embodiment, the regenerator material 61 is disposed in the first header 41 and the third header 43 in a manner that can affect the flow of the refrigerant. Therefore, as shown in FIG. 7, it is preferable to dispose the cold storage material 61 in the vicinity of the inlet portion 412 that is the inlet of the refrigerant to the first header 41. For example, the cool storage agent 61 may be disposed so as to overlap the side plate 50 close to the inlet portion 412 in the longitudinal direction of the refrigerant flow path 45.

The refrigerant supplied to the evaporator 40 is a liquid refrigerant, and the refrigerant flowing out of the evaporator 40 is a gas refrigerant. Since the increase in pressure loss is low for liquid refrigerant and high for gas refrigerant, the effect of pressure loss can be reduced by disposing the regenerator 61 in the vicinity of the inlet 412 to which liquid refrigerant is supplied.

Also in the second embodiment, as in the first embodiment, the refrigerant stops flowing when the automobile on which the refrigeration cycle apparatus 1 is mounted stops. However, when the refrigerant remaining in the evaporator 40 evaporates and gasifies, the regenerator material It is cooled by 61, liquefied again, and supplied again into the refrigerant flow path 45. By this resupply, cold air can be supplied through the first heat exchange unit 48 and the second heat exchange unit 49 which are the core portions.
(Third embodiment)
Then, 3rd Embodiment which arrange | positions a cool storage material so that the flow of the air of an air path may not be inhibited is demonstrated, referring FIG.

The cold storage material 62 is disposed outside the first header 41 and the third header 43 and between the outer peripheral surface of the first header 41 and the outer peripheral surface of the third header 43, and the holding unit 70 and the holding unit 71. ing. A pair of recesses along the longitudinal direction of the first header 41 and the third header 43 is formed between the first header 41 and the third header 43, and the holding unit 70 closes and holds one of the recesses. The portion 71 closes the other concave portion. The cold storage material 62 is disposed in a space in which a pair of concave portions are closed by the holding

portions

70 and 71.

Compared to the first embodiment and the second embodiment, the regenerator material 62 of the third embodiment is disposed outside the first header 41 and the third header 43, and thus has no effect on the flow of the refrigerant. The mechanism of cold air supply when the refrigerant stops flowing when the automobile on which the refrigeration cycle apparatus 1 is mounted is the same as in the first embodiment and the second embodiment.
(Fourth embodiment)
Next, a fourth embodiment in which the cold storage material is arranged so as not to hinder the air flow in the air passage will be described with reference to FIGS. 9 and 10.

The cold storage material 63 is disposed outside the first header 41 and the third header 43 and between the outer peripheral surface of the first header 41 and the outer peripheral surface of the third header 43 and the packing 75 (holding portion). Yes. When the evaporator 40 is mounted on an automobile, a packing 75 is provided in order to maintain airtightness (wind leakage inhibiting property) with the housing case. The packing 75 is provided so as to cover the outer circumferences of the first header 41 and the third header 43. The cold storage material 63 is disposed along the inner surface of the packing 75 and is in partial contact with the first header 41 and the third header 43. By disposing the cold storage material 63 on the inner surface of the packing 75, the cold heat from the refrigerant is easily transmitted, and the stored cold heat is easily released. Further, by arranging the packing 75 on the outer surface, it is possible to ensure the air leakage.

Similarly to the third embodiment, since the cold storage material 62 is disposed outside the first header 41 and the third header 43, there is no influence on the flow of the refrigerant. The mechanism of cold air supply when the refrigerant stops flowing when the automobile on which the refrigeration cycle apparatus 1 is mounted is the same as in the first embodiment and the second embodiment.
(Fifth embodiment)
Then, 5th Embodiment which arrange | positions a cool storage material so that the flow of the air of an air path may not be inhibited is demonstrated, referring FIG.

As shown in FIG. 11, the refrigerant flow path 45 in which the cold storage material 64 is arranged instead of the side plate 50 is arranged on the outermost side of the plurality of refrigerant flow paths 45. The cold storage material 64 is disposed along the outer surface of the refrigerant flow path 45 disposed on the outermost side. In this way, by cooling a part of the refrigerant flow paths 45 with the cold storage material 64, the inside of the refrigerant flow path 45 in contact with the cold storage material 64 can maintain the two-phase state of the liquid refrigerant and the gas refrigerant. For this reason, when only the gas refrigerant is used, the temperature of the refrigerant increases, and by maintaining the two-phase state in a part of the evaporator 40, the entire temperature can be kept constant. Therefore, the cool storage material 64 is preferably provided on the joint side where the gas refrigerant flows out of the evaporator 40.
(Sixth embodiment)
Next, a sixth embodiment in which the regenerator material is arranged so as not to hinder the flow of air (AIR) in the air passage will be described with reference to FIG.

As shown in FIG. 12, the plurality of refrigerant channels 45 are arranged in two rows so as to form a pair along the air passage. In this embodiment, the cool storage material 65 is arrange | positioned between the refrigerant | coolant flow paths 45 arrange | positioned at a pair. By disposing the cool storage material 65 between the refrigerant flow paths 45 which are dead spaces, the cool storage material can be disposed without obstructing the flow of air flowing through the air passage.

The refrigerant stops flowing when the automobile on which the refrigeration cycle apparatus 1 is mounted, but when the temperature of the refrigerant remaining in the refrigerant flow path 45 rises, it is cooled by the cold storage material 65 and liquefied again into the refrigerant flow path 45. Liquid refrigerant remains. By this resupply, cold air can be supplied through the first heat exchange unit 48 and the second heat exchange unit 49 which are the core portions.

In each embodiment mentioned above, since the

cool storage agent

60, 61, 62, 63, 64, 65 is arrange | positioned so that the flow of the air in an air passage may not be inhibited, the cold storage container 47 arrange | positioned in the air passage is used. The number and volume can be reduced.

In each of the above-described embodiments, the first header 41 and the third header 43 correspond to the first header tank of the present disclosure, and the second header 42 and the fourth header 44 correspond to the second header tank of the present disclosure. To do. FIG. 13 schematically shows the refrigerant flow in each of the above-described embodiments.

As shown in FIG. 13, the first header 41, the second header 42, the third header 43, and the fourth header 44 are each divided into two sections, a first section and a second section. The refrigerant that has flowed into the first section of the first header 41 flows into the first section of the second header 42 through the refrigerant flow path 45. The refrigerant that has flowed into the first section of the second header 42 flows into the second section of the second header 42. The refrigerant that has flowed into the second section of the second header 42 flows into the second section of the first header 41 through the refrigerant flow path 45.

Since the second section of the first header 41 and the second section of the third header 43 communicate with each other, the refrigerant flowing into the second section of the first header 41 flows into the second section of the third header 43. The refrigerant that has flowed into the second section of the third header 43 flows into the second section of the fourth header 44 through the refrigerant flow path 45.

The refrigerant that has flowed into the second section of the fourth header 44 flows into the first section of the fourth header 44. The refrigerant flowing into the first section of the fourth header 44 flows into the first section of the third header 43 through the refrigerant flow path 45. The refrigerant flowing into the first section of the third header 43 flows out to the outside.

The embodiment of the present disclosure is not limited to the refrigerant flow described above. As shown in FIG. 14, the first header 41A, the second header 42A, the third header 43A, and the fourth header 44A can be eliminated.

In the cold storage heat exchanger 40A shown in FIG. 14, the refrigerant that has flowed into the first header 41A flows into the second header 42A through the refrigerant flow path 45. Since the second header 42A and the fourth header 44A communicate with each other, the refrigerant that has flowed into the second header 42A flows into the fourth header 44A. The refrigerant that has flowed into the fourth header 44A flows through the refrigerant flow path 45 into the third header 43A. The refrigerant flowing into the third header 43A flows out to the outside.

The

cold storage agents

60, 61, 62, 63, 64, and 65 can also be applied to those constituting the refrigerant flow, such as the cold storage heat exchanger 40A.

The cold storage heat exchanger 40A is configured to eliminate the internal sections of the first header 41A, the second header 42A, the third header 43A, and the fourth header 44A, but may be configured to increase the internal sections.

In the regenerative heat exchanger 40B shown in FIG. 15, the first header 41B, the second header 42B, the third header 43B, and the fourth header 44B are each divided into three sections.

The refrigerant that has flowed into the first section of the first header 41B flows through the refrigerant flow path 45 into the first section of the second header 42B. The refrigerant that has flowed into the first section of the second header 42B flows into the second section of the second header 42B. The refrigerant that has flowed into the second section of the second header 42B flows through the refrigerant flow path 45 into the second section of the first header 41B.

The refrigerant that has flowed into the second section of the first header 41B flows into the third section of the first header 41B. The refrigerant that has flowed into the third section of the first header 41B flows through the refrigerant flow path 45 into the third section of the second header 42B.

Since the third section of the second header 42B and the third section of the fourth header 44B communicate with each other, the refrigerant flowing into the third section of the second header 42B flows into the third section of the fourth header 44B. The refrigerant that has flowed into the third section of the fourth header 44B flows through the refrigerant flow path 45 into the third section of the third header 43B.

The refrigerant that has flowed into the third section of the third header 43B flows into the second section of the third header 43B. The refrigerant that has flowed into the second section of the third header 43B flows through the refrigerant flow path 45 into the second section of the fourth header 44B.

The refrigerant that has flowed into the second section of the fourth header 44B flows into the first section of the fourth header 44B. The refrigerant that has flowed into the first section of the fourth header 44B flows through the refrigerant flow path 45 into the first section of the third header 43B. The refrigerant that has flowed into the first section of the third header 43B flows out to the outside.

The

cold storage agents

60, 61, 62, 63, 64, and 65 can also be applied to a refrigerant that constitutes a refrigerant flow such as the cold storage heat exchanger 40B.

In the cold

storage heat exchangers

40, 40A, 40B, the refrigerant inlet / outlet ports are provided in the

first header

41, 41A, 41B and the

third header

43, 43A, 43B, which are arranged on the upper side in the direction of gravity. The form of the refrigerant inlet / outlet is not limited to these, and the top and bottom of the cold

storage heat exchangers

40, 40A, 40B may be reversed.

In the cold storage heat exchanger 40R shown in FIG. 16, the first header 41R and the third header 43R are arranged on the lower side in the gravity direction, and the second header 42R and the fourth header 44R are arranged on the upper side in the gravity direction. .

The refrigerant that has flowed into the first section of the first header 41R flows through the refrigerant flow path 45 into the first section of the second header 42R. The refrigerant that has flowed into the first section of the second header 42R flows into the second section of the second header 42R. The refrigerant that has flowed into the second section of the second header 42R flows through the refrigerant flow path 45 into the second section of the first header 41R.

Since the second section of the first header 41R communicates with the second section of the third header 43R, the refrigerant flowing into the second section of the first header 41R flows into the second section of the third header 43R. The refrigerant that has flowed into the second section of the third header 43R flows through the refrigerant flow path 45 into the second section of the fourth header 44R.

The refrigerant that has flowed into the second section of the fourth header 44R flows into the first section of the fourth header 44R. The refrigerant that has flowed into the first section of the fourth header 44R flows through the refrigerant flow path 45 into the first section of the third header 43R. The refrigerant flowing into the first section of the third header 43R flows out to the outside.

By configuring the cold storage heat exchanger 40R as described above, the second header 42R and the fourth header 44R correspond to the first header tank of the present disclosure, and the first header 41R and the third header 43R are the second header of the present disclosure. Corresponds to the header tank. Therefore, the

cool storage agents

60, 61, 62, and 63 are provided in the second header 42R and the fourth header 44R.

A cold storage heat exchanger 40RA shown in FIG. 17 is obtained by reversing the cold storage heat exchanger 40A shown in FIG. The cold storage heat exchanger 40RA includes a second header 42RA and a fourth header 44RA corresponding to the first header tank of the present disclosure, and a first header 41RA and a third header 43RA corresponding to the second header tank of the present disclosure. I have. Therefore, the

cool storage agents

60, 61, 62, and 63 are provided in the second header 42RA and the fourth header 44RA.

A cold storage heat exchanger 40RB shown in FIG. 18 is obtained by reversing the cold storage heat exchanger 40B shown in FIG. The cold storage heat exchanger 40RB includes a second header 42RB and a fourth header 44RB corresponding to the first header tank of the present disclosure, and a first header 41RB and a third header 43RB corresponding to the second header tank of the present disclosure. I have. Therefore, the

cool storage agents

60, 61, 62, and 63 are provided in the second header 42RB and the fourth header 44RB.

In each of the above embodiments, the case where the regenerator material is arranged in a region that does not inhibit the air flow has been described, but the regenerator material may also be arranged in a region that inhibits the air flow.

Although the present disclosure has been described based on the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims

A cold storage heat exchanger for evaporating the refrigerant,
A plurality of refrigerant passages (45) each having refrigerant passages through which refrigerant flows and arranged so as to form air passages spaced apart from each other;
Fins (46) provided in the air passage;
A first header tank (41, 41A, 41B, 43, 43A, 43B, 42R, 42RA, 42RB, 44R, 44RA, 44RB) in which one end side of the plurality of refrigerant channels communicates;
A second header tank (42, 42A, 42B, 44, 44A, 44B, 41R, 41RA, 41RB, 43R, 43RA, 43RB) in which the other end side of the plurality of refrigerant flow paths communicates;
A regenerator material (60, 61, 62, 63, 64, 65) that cools by evaporating the refrigerant depressurized by the decompressor when the compressor is driven, and cools when the compressor is stopped. Prepared,
The regenerative heat exchanger in which the regenerator material is disposed in a region that does not hinder the air flow in the air passage.
The cold storage heat exchanger according to claim 1, wherein the cold storage material contacts at least one of an inner side and an outer side of the first header tank.
The cold storage heat exchanger according to claim 2, wherein the first header tank is disposed above the plurality of refrigerant flow paths in the direction of gravity.
In the first header tank, there are provided partition walls (411, 431) that penetrate through one end of the plurality of refrigerant flow paths communicating with the first header tank and are in close contact with the inner wall of the first header tank. And
The regenerative heat exchanger according to claim 2 or 3, wherein the regenerator material is disposed in a space between the partition wall and the inner wall and in which the one end does not protrude.
The cold storage heat exchanger according to claim 2 or 3, wherein the cold storage material (61) is disposed between one end of the plurality of refrigerant flow paths and an inner wall of the first header tank.
The first header tank (41, 41A, 41B, 43, 43A, 43B) has an inlet portion (412) into which the refrigerant flows, and the cold storage material is disposed in the vicinity of the inlet portion. 5. The cold storage heat exchanger according to 5.
The cold storage heat exchanger according to claim 2 or 3, wherein the cold storage material (62, 63) is disposed between an outer peripheral surface of the first header tank and a holding portion (70, 71, 75).
The cold storage heat exchanger according to claim 7, wherein the holding part (75) is a packing arranged between the cold storage heat exchanger and a case accommodating the cold storage heat exchanger to maintain airtightness.
The cold storage heat exchanger according to claim 1, wherein the cold storage material (64) is arranged on an outer side surface of the refrigerant flow channel arranged on the outermost side among the plurality of refrigerant flow channels.
The plurality of refrigerant flow paths are arranged in two rows so as to form a pair in the flow direction of the air flowing through the air passage, and the cold storage material (65) is interposed between the refrigerant flow paths arranged in a pair. The regenerative heat exchanger according to claim 1 arranged.
The cold storage heat exchanger according to any one of claims 1 to 10, wherein the cold storage material is disposed also in a region where air flow is inhibited in the air passage.
The first header tank has partition walls (411, 431) that are in close contact with the inner wall of the first header tank and partition the interior of the first header tank into two or more spaces.
The one end of the plurality of refrigerant channels passes through the partition wall, and each refrigerant passage of the plurality of refrigerant channels communicates with at least one of the spaces partitioned by the partition wall;
The cold storage heat exchanger according to claim 2 or 3, wherein the cold storage material is disposed in a space in the first header tank in which the refrigerant passage is not communicated.
A holding portion (70, 71, 75) disposed outside the first header tank;
The cold storage heat exchanger according to claim 2 or 3, wherein the cold storage material (62, 63) is disposed between an outer peripheral surface of the first header tank and the holding portion (70, 71, 75).