JP2019147398A - Cool storage heat exchanger - Google Patents

Abstract

To obtain a more comfortable cooling feeling.SOLUTION: A cool storage heat exchanger comprises a core part 400 which includes a plurality of refrigerant pipes 45 lined in one direction, fins 46 disposed between the plurality of refrigerant pipes, and cool storage material containers 47. The core part 400 includes a first region A in which a rate of the number of the cool storage material containers 47 to the number of the refrigerant pipes 45 is regarded as a prescribed rate, and a second region B in which a rate of the number of the cool storage material containers 47 to the number of the refrigerant pipes 45 is smaller than the prescribed rate.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cold storage heat exchanger.

  Conventionally, as a vehicle air conditioner mounted on a vehicle having an idle stop function to temporarily stop the engine while the vehicle is stopped, a cooling storage heat exchanger in which a cooling storage material is uniformly added to a cooling heat exchanger (For example, refer to Patent Document 1). This vehicle air conditioner can cool the regenerator material while the vehicle is running, and can continue cooling by dissipating heat from the regenerator material during idle stop of the vehicle.

JP 2010-91250 A

  By the way, as shown in FIG. 13, the vehicle air conditioner includes a blower 50, an evaporator 40 disposed on the air flow downstream side of the blower 50, and a heater core 60 disposed on the air flow downstream side of the evaporator 40. And an air conditioning case 70 for storing these. The air blown from the blower 50 is cooled by the evaporator 40, then heated by the heater core 60, and the temperature-adjusted air is blown out from the air outlet 71 provided in the air conditioning case 70.

  In such a vehicle air conditioner, the amount of air flowing from the blower 50 is likely to increase in a portion away from the blower 50 than in a portion near the blower 50 in the evaporator 40. For this reason, a step 70a is formed in the air conditioning case 70 so that the pressure loss of the air flowing into the part of the evaporator 40 away from the blower 50 is increased, and the air volume distribution of the air flowing out of the evaporator 40 is made uniform. However, such a configuration that increases the pressure loss of the air flowing into the evaporator 40 has a problem that the cooling performance is deteriorated.

  It is conceivable to apply the cold storage heat exchanger described in Patent Document 1 as the evaporator 40 of such a vehicle air conditioner. However, when the cold storage heat exchanger in which the cold storage material is uniformly arranged as described in Patent Document 1 is applied, the cold storage material becomes a resistance, and the cooling performance is further reduced. For this reason, there is a problem that the passenger cannot obtain a comfortable cooling feeling.

  On the other hand, as a vehicle air conditioner mounted on a vehicle, the air flow path of the air conditioning case is divided into left and right sides, and the left and right independent control for independently controlling the temperature of the air blown from the right air flow channel and the left air flow channel, respectively There is a temperature control type vehicle air conditioner.

  It is also conceivable to apply the cold storage heat exchanger described in Patent Document 1 to such a vehicle air conditioner. However, when a cold storage heat exchanger in which cold storage materials are uniformly arranged as described in Patent Document 1 is applied, the cooling performance on the driver's seat side that is frequently used becomes equal to that on the passenger seat side, and the passenger is comfortable There is a problem that a feeling of cooling is not obtained.

  The present invention has been made in view of the above problems, and an object thereof is to provide a more comfortable cooling feeling.

  In order to achieve the above-mentioned object, the invention described in claim 1 includes a plurality of refrigerant tubes (45) arranged in one direction and fins (46) arranged in an air passage formed between the plurality of refrigerant tubes. ) And a cold storage material container (47) that is disposed in an air passage formed between the plurality of refrigerant pipes and accommodates the cold storage material (80). A first region (A) in which the ratio of the number of cool storage material containers to the number of refrigerant tubes is a predetermined ratio, and a second region (B) in which the ratio of the number of cool storage material containers to the number of refrigerant tubes is less than a predetermined ratio ) And.

  As described above, the core portion has the first region (A) in which the ratio of the number of the regenerator containers to the number of refrigerant tubes is a predetermined ratio, and the ratio of the number of the regenerator containers to the number of refrigerant tubes is the predetermined ratio. A second region (B) less than the proportion. For this reason, for example, in order to make the airflow distribution of the air flowing out from the evaporator uniform, it is not necessary to form a step in the air conditioning case to increase the pressure loss of the air flowing into the evaporator, and the driver side and the assistant In the vehicle air conditioner that independently controls the temperature of the air blown out from each air outlet on the seat side, it is possible to prevent the cooling performance on the driver's seat side, which is frequently used, from being lowered similarly to the passenger seat side, A more comfortable cooling feeling can be obtained.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a block diagram showing the refrigerating cycle device concerning a 1st embodiment to which the present invention is applied. It is a layout figure of the air-conditioner for vehicles of a 1st embodiment. It is an arrow view of the evaporator as a cool storage heat exchanger seen from the arrow III direction in FIG. FIG. 3 is a left side view of FIG. 2. It is an expanded sectional view which shows a part of IV-IV cross section of FIG. It is an expanded sectional view which shows a part of VV cross section of FIG. It is a figure showing the result of having evaluated each temperature change of the rough side and dense side of a cool storage material container. It is a layout figure of the vehicle air conditioner of 2nd Embodiment. It is an arrow view of the evaporator as a cool storage heat exchanger seen from the arrow IX direction in FIG. It is the figure which showed the relationship between the cooling performance of an evaporator, and the cool storage material container occupation rate in a core part. It is a cool storage heat exchanger of 3rd Embodiment, Comprising: It is an arrow line view of the cool storage heat exchanger seen from the arrow IX direction in FIG. It is a cool storage heat exchanger of 4th Embodiment, Comprising: It is an arrow line view of the cool storage heat exchanger seen from the arrow III direction in FIG. It is a layout diagram of an air conditioner in which a step is formed in the air conditioning case.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of a refrigeration cycle apparatus using a cold storage heat exchanger according to the first embodiment of the present invention. 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 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 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 layout diagram of the vehicle air conditioner of the present embodiment. As shown in FIG. 2, the vehicle air conditioner includes a blower 50 for blowing air, an evaporator 40 disposed on the downstream side of the air flow of the blower 50, and a heater core disposed on the downstream side of the air flow of the evaporator 40. 60 and an air-conditioning case 70 for storing these components. The blower 50 corresponds to a blower. The evaporator 40 of this embodiment functions as a cold storage heat exchanger.

  The air blown from the blower 50 is cooled by the evaporator 40, then heated by the heater core 60, and the temperature-adjusted air is blown out from the air outlet 71 provided in the air conditioning case 70.

  In the air conditioning case 70 of the present embodiment, the direction of the air blown from the blower 50 is changed to the core part 400 side at a part away from the blower 50, and the part away from the blower 50 is more core than the part near the blower 50. The air volume flowing into the section 400 is configured to increase.

  FIG. 3 is an arrow view of the evaporator 40 as seen from the direction of arrow III in FIG. FIG. 4 is a left side view of FIG. FIG. 5 is an enlarged cross-sectional view showing a part of the VV cross section of FIG. 6 is an enlarged cross-sectional view showing a part of the VI-VI cross section of FIG. 5 and 6 are enlarged cross-sectional views of a portion where one cold storage material container 47 is arranged for two refrigerant tubes 45. FIG. Moreover, the arrow which shows the up-down, left-right, and front-back in FIG. 2, FIG. 3 represents the direction of the vehicle which mounts a vehicle air conditioner.

  3 and 4, 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 headers 41, 42, 43, 44 positioned in a pair, and a plurality of refrigerant tubes 45 connecting the headers.

  3 and 4, the first header 41 and the second header 42 form a pair, and are arranged in parallel at 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. A plurality of refrigerant tubes 45 are arranged at equal intervals between the first header 41 and the second header 42. Each refrigerant pipe 45 communicates with the corresponding header 41, 42 at its end. A first heat exchanging portion 48 is formed by the first header 41, the second header 42, and a plurality of refrigerant tubes 45 arranged therebetween. A plurality of refrigerant tubes 45 are arranged at equal intervals between the third header 43 and the fourth header 44. Each refrigerant pipe 45 communicates with the corresponding header 43, 44 at its end. A second heat exchanging portion 49 is formed by the third header 43, the fourth header 44, and a plurality of refrigerant tubes 45 arranged therebetween. As a result, the evaporator 40 has a first heat exchange unit 48 and a second heat exchange unit 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 (not shown) provided substantially at the center in the length direction. Correspondingly, the plurality of refrigerant tubes 45 are divided into a first group and a second group. 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 tubes 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 tubes 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 tubes 45 are divided into a first group and a second group. 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 tubes 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 tubes 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.

  5 and 6, the refrigerant pipe 45 is a multi-hole pipe having a plurality of refrigerant passages therein. The refrigerant tube 45 is also called a flat tube. This multi-hole tube can be obtained by an extrusion manufacturing method. The plurality of refrigerant passages extend along the longitudinal direction of the refrigerant pipe 45 and open to both ends of the refrigerant pipe 45. The plurality of refrigerant tubes 45 are arranged in a row. In each row, the plurality of refrigerant tubes 45 are arranged so that their main surfaces face each other. The plurality of refrigerant tubes 45 partition an air passage for exchanging heat with air between two adjacent refrigerant tubes 45 and an accommodating portion for accommodating a cold storage material container 47 described later.

  The evaporator 40 includes a plurality of refrigerant tubes 45, fins 46 disposed in an air passage formed between the plurality of refrigerant tubes 45, and a cold storage material disposed in an air passage formed between the plurality of refrigerant tubes 45. The core part 400 which has the cool storage material container 47 which accommodates 80 is provided.

  The fins 46 are for increasing the contact area with the air supplied to the passenger compartment. The fins 46 are constituted by corrugated fins 46. The fins 46 are arranged in an air passage formed between two adjacent refrigerant tubes 45. The fin 46 is thermally coupled to the two adjacent refrigerant tubes 45. The fins 46 are joined to the two adjacent refrigerant tubes 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 includes 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 cold storage material container 47 is closed by squeezing the cylinder in the thickness direction at both ends in the longitudinal direction, thereby defining a room for accommodating the cold storage material 80 therein. 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 pipe 45.

  The cool storage material container 47 is disposed in an air passage formed between two adjacent refrigerant tubes 45. The cool storage material container 47 is thermally coupled to two refrigerant tubes 45 disposed on both sides thereof. The cool storage material container 47 is joined to the two adjacent refrigerant pipes 45 by a joining material excellent in heat transfer. As the bonding material, a resin material such as a brazing material or an adhesive can be used. The cold storage material container 47 is brazed to the refrigerant pipe. A large amount of brazing material is disposed between the cold storage material container 47 and the refrigerant pipe 45 in order to connect them with a wide cross-sectional area. This brazing material can be provided by placing a brazing material foil between the cold storage material container 47 and the refrigerant pipe 45. As a result, the cool storage material container 47 exhibits good heat conduction with the refrigerant pipe 45.

  5 and 6, the thickness T of the cool storage material container 47 is substantially equal to the thickness of the air passage. Therefore, the thickness T of the cold storage material container 47 is substantially equal to the thickness of the fin 46. The thickness T of the cool storage material container 47 is clearly larger than the thickness of the refrigerant pipe 45. This configuration is effective for accommodating a large amount of the cold storage material 80. The cold storage material container 47 has substantially the same length L as the fins 46. As a result, the cool storage material container 47 occupies substantially the entire longitudinal direction of the accommodating portion partitioned between the two adjacent refrigerant tubes 45. The gap between the cold storage material container 47 and the headers 41, 42, 43, 44 is preferably filled with a piece of fin 46 or a filler such as resin.

  The cold storage material container 47 has an outer shell 47a that provides the outer surface thereof and a plurality of inner pillars 47b. The inner pillar 47b extends from the main wall toward the interior of the room that houses the cold storage material 80. The inner pillar 47 b connects between the two large main walls of the cold storage material container 47. The inner pillar 47 b extends along the longitudinal direction of the cold storage material container 47. The plurality of inner pillars 47b divide the room in the cool storage material container 47 into a plurality of small rooms arranged along the air flow direction. These small rooms communicate with each other at both ends of the cold storage material container 47. The cool storage material 80 is accommodated in the plurality of rooms. The sectional area of each small chamber is sufficiently larger than the refrigerant passage in the refrigerant pipe 45.

  In FIG. 3, the plurality of refrigerant tubes 45 are arranged in one direction at substantially constant intervals. A plurality of gaps are formed between the plurality of refrigerant tubes 45. A plurality of fins 46 and a plurality of cold storage material containers 47 are arranged in the plurality of gaps.

  Note that the cool storage material container 47 has greater ventilation resistance than the fins 46. Therefore, when the cool storage material container 47 in which the cool storage material 80 is stored in the gap between the two refrigerant tubes 45 is disposed, the ventilation resistance becomes larger than when the fins 46 are disposed in the gap between the two refrigerant tubes 45.

  In the present embodiment, as shown in FIGS. 2 and 3, the air volume of the air blown from the blower 50 is higher in the right part away from the blower 50 than in the left part near the blower 50 in the core part 400. Many wind speeds are also fast. Here, the air volume refers to the flow rate of air per unit area.

  Therefore, the vehicle air conditioner of the present embodiment does not form a step in the air conditioning case 70 in order to make the air volume distribution of the air flowing out from the evaporator 40 uniform, but between the refrigerant pipes 45 in the evaporator 40. The ratio of the cold storage material containers 47 to be arranged is uneven on the left and right of the evaporator 40.

  Specifically, as shown in FIG. 3, in the core portion 400 of the evaporator 40, the regenerator container 47 is concentrated in the right region away from the blower 50 and where the amount of air blown from the blower 50 is large. Is arranged. Therefore, in FIG. 3, the cool storage material container 47 is roughly arranged in the left region where the wind speed is slow, and the cool storage material container 47 is densely arranged in the right region where the wind speed is fast.

  That is, the core part 400 of the evaporator 40 of the present embodiment includes the first region A in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is a predetermined ratio, and the regenerator material for the number of the refrigerant tubes 45. A second region B in which the proportion of the number of containers 47 is less than a predetermined proportion.

  In the first region A, five cold storage material containers 47 are arranged for the 22 refrigerant tubes 45. Therefore, the ratio of the number of the cold storage material containers 47 to the number of the refrigerant tubes 45 is 5/22. Further, also in the first region A, one cold storage material container 47 is arranged for two refrigerant pipes 45 and one cold storage material container 47 is arranged for six refrigerant pipes 45. There are some parts.

  In the second region B, four cold storage material containers 47 are arranged for the 22 refrigerant tubes 45. Therefore, the ratio of the number of the cold storage material containers 47 to the number of the refrigerant tubes 45 is 4/22. In the second region B, one cold storage material container 47 is arranged for the six refrigerant tubes 45.

  Thereby, without forming a level | step difference in the air-conditioning case 70, the air volume distribution of the air which flows out from the evaporator 40 is equalized, and uniform velocity distribution can be obtained.

  As described above, when the cool storage material container 47 is arranged in the evaporator 40 so as to be uneven on the left and right sides of the evaporator 40, the cooling performance for keeping the cooling by dissipating heat from the cool storage material 80 at the time of idling stop of the vehicle is lowered. There is a concern to do.

  Therefore, the present inventors evaluated the cooling performance of the evaporator 40 of the present embodiment. FIG. 7 shows the result of evaluating each temperature change on the rough side of the cool storage material container 47 and the dense side of the cool storage material container 47 when the compressor 10 is turned on after a predetermined period of time after the compressor 10 was turned off. Is. Evaluation was performed by arranging temperature sensors at the air outlets 71 on the downstream side of the air flow on the rough side of the cold storage material container 47 and on the dense side of the cold storage material container 47, respectively.

  Before turning off the compressor 10, the temperatures on the rough side of the cold storage material container 47 and the dense side of the cold storage material container 47 are about 1 ° C. For this reason, low-temperature air is blown into the vehicle interior from the air outlet 71 located on the air flow downstream side of the coarse side of the cold storage material container 47 and the dense side of the cold storage material container 47.

  Next, when the compressor 10 is turned off, the temperatures on the coarse side of the cold storage material container 47 and the dense side of the cold storage material container 47 gradually increase in the same manner. Here, the respective temperature rise widths of the rough side of the cold storage material container 47 and the dense side of the cold storage material container 47 are small from the point where each exceeds 12 ° C. Thus, the temperature rise becomes smaller after the temperature exceeds 12 ° C. because of the effect of allowing the cool storage material 80 to cool. The temperature of the second region B on the coarse side of the cool storage material container 47 is slightly higher than the temperature on the dense side of the cool storage material container 47.

  That is, the evaporator 40 of the present embodiment is arranged so that the cool storage material containers 47 are not uniform on the left and right, but the cool storage material containers 47 are also in the second region B where the cool storage material containers 47 are rough. It has been found that the cooling performance can be obtained in the same manner as in the first region A in which is dense.

  This is because even if the cold storage material container 47 is arranged so as to be uneven on the left and right, the refrigerant in the core part 400 is kept constant in a low pressure state by the cold storage material 80, and the cooling performance of the evaporator 40 is the core part. This is considered to be uniform within 400.

  That is, even when the cool storage material container 47 is arranged so as to be uneven on the left and right, the entire evaporator 40 is kept at a low temperature and the entire evaporator 40 is kept at a low temperature by the cool storage material 80. Even in the second region B where the temperature becomes rough, it is considered that the same cooling performance as that in the first region A where the cool storage material container 47 is dense can be obtained.

  Next, when the compressor 10 is turned on, the temperatures on the rough side of the cold storage material container 47 and the dense side of the cold storage material container 47 are gradually decreased. Accordingly, low-temperature air is blown into the vehicle interior from the air outlet 71 located on the air flow downstream side of the coarse side of the cold storage material container 47 and the dense side of the cold storage material container 47.

  According to the configuration described above, the core unit 400 includes the first region A in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is a predetermined ratio, and the number of the regenerator containers 47 relative to the number of the refrigerant tubes 45. A second region B having a number ratio smaller than a predetermined ratio. Therefore, for example, in order to make the airflow distribution of the air flowing out of the evaporator 40 uniform, it is not necessary to form a step 70a in the air conditioning case 70 to increase the pressure loss of the air flowing into the evaporator 40, and thus more comfortable cooling. A feeling can be obtained.

  Moreover, the core part 400 cools the air sent from the blower 50 provided in the air-conditioning case 70, and the 1st area | region A is the air volume of the air sent from the blower 50 rather than the 2nd area | region B. It is formed at a position where there are many. Therefore, the air volume distribution of the air flowing out from the evaporator 40 can be made uniform.

  In the air conditioning case 70, the direction of the air blown from the blower 50 is changed to the core part 400 at a part away from the blower 50, and the part away from the blower 50 is closer to the core part than the part near the blower 50. The air volume of the air that flows in is increased. Further, the region A in which the ratio of the number of the cold storage material containers 47 to the number of the refrigerant tubes 45 is a predetermined ratio is formed in a part away from the blower 50.

  Therefore, in the vehicle air conditioner having the air conditioning case 70 configured to increase the air volume of the air flowing into the core portion in the part far from the blower 50 than in the part close to the blower 50, it flows out of the evaporator 40. It is possible to make the air volume distribution of the air uniform.

(Second Embodiment)
A cold storage heat exchanger according to a second embodiment of the present invention will be described. FIG. 8 is a layout diagram of the vehicle air conditioner of the present embodiment. FIG. 9 is an arrow view of the evaporator 40 as a cold storage heat exchanger as seen from the direction of the arrow IX in FIG.

  In the vehicle air conditioner, the air flow path 72 of the air conditioning case 70 is divided into left and right portions by a partition plate 73, from a right air passage 72 a located on the right side of the partition plate 73 and a left air passage 72 b located on the left side of the partition plate 73. The temperature of the blown air that is blown out is controlled independently. In other words, the vehicle air conditioner independently controls the temperature of the air flowing out from the air outlet provided on the driver's seat side in the passenger compartment and the air flowing out from the air outlet provided on the passenger seat side. It is configured as a vehicle type air conditioner.

  The right air passage 72a is connected to an air outlet (not shown) provided on the driver's seat side of the vehicle via a duct, and the left air passage 72b is an air outlet (not shown) provided on the passenger seat side of the vehicle. And connected through a duct.

  Further, the evaporator 40 and the heater core 60 are housed in the air conditioning case 70 so as to straddle the right air passage 72a and the left air passage 72b, respectively.

  In the core part 400, the first region A in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is a predetermined ratio is provided in the left air passage 72b that communicates with the air outlet provided on the passenger seat side. Has been placed. Specifically, in the region A, seven cold storage material containers 47 are arranged for the 22 refrigerant tubes 45. Therefore, the ratio of the number of the cold storage material containers 47 to the number of the refrigerant tubes 45 is 7/22.

  On the other hand, the regenerator container 47 is not disposed in a portion of the core portion 400 that is located in the right air passage 72a that communicates with the air outlet provided on the driver's seat side. Thus, the maximum cooling performance on the driver's seat side, which is frequently used, is ensured by not arranging the cool storage material container 47 in the region located in the right air passage 72a.

  Here, since the cool storage material container 47 is not arranged in the region B located in the right air passage 72a communicating with the air outlet provided on the driver's seat side, the cooling performance on the driver's seat side at the time of idling stop is lowered. There is a concern to do.

  However, as in the first embodiment, during cooling, the evaporator 40 is provided by the cool storage material 80 stored in the cool storage material container 47 disposed in the left air passage 72b that communicates with the air outlet provided on the passenger seat side. Since the whole is kept at a low temperature, a cooling feeling can be obtained on the driver's seat as well as on the passenger's seat.

  FIG. 10 is a diagram showing the relationship between the cooling performance of the evaporator 40 and the cold storage material container occupancy rate in the core unit 400. When the ratio of the number of the cool storage material containers 47 to the number of the refrigerant tubes 45 is 0%, the cooling performance of the evaporator 40 is the maximum cooling performance. As the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 increases, the number of the fins 46 decreases, so that the contact area between the fins 46 and the air decreases and the cooling performance decreases. That is, by eliminating the cold storage material container 47 disposed in the left air passage 72b communicating with the air outlet provided on the driver's seat side, it is possible to suppress a decrease in the cooling performance on the driver's seat side.

  In the present embodiment, the same effect obtained from the configuration common to the first embodiment can be obtained as in the first embodiment.

  Further, in the present embodiment, in the core portion 400 of the evaporator 40, the region A in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is a predetermined ratio is the blower provided on the passenger seat side. It arrange | positions at the air path 72b which flows air to an exit. Further, the second region B in which the cool storage material container 47 is not disposed is disposed in the air passage 72a that allows air to flow to the air outlet provided on the driver's seat side. Therefore, the maximum cooling performance on the driver's seat side that is frequently used can be secured, and further, the cooling performance on the driver's seat side can be secured even at the time of idling stop.

(Third embodiment)
A cold storage heat exchanger according to a third embodiment of the present invention will be described. FIG. 11 is an arrow view of the evaporator 40 as a cold storage heat exchanger viewed from the direction of the arrow IX in FIG. The layout of the vehicle air conditioner of this embodiment is the same as that shown in FIG. In the regenerator heat exchanger of the second embodiment, the regenerator container 47 is disposed at a predetermined ratio in a portion of the core portion 400 that is located in the left air passage 72b that communicates with the air outlet on the passenger seat side. The cool storage material container 47 is not disposed in a portion located in the right air passage 72a communicating with the seat-side air outlet.

  On the other hand, the regenerative heat exchanger of the present embodiment includes a right air passage that communicates with a portion of the core portion 400 that is located in the left air passage 72b that communicates with the air outlet on the passenger seat side and the air outlet on the driver seat side. The cool storage material containers 47 are arranged in both of the parts located at 72a. However, the ratio of the number of the regenerator containers to the number of the refrigerant tubes 45 is smaller in the region B than in the region A.

  A region A in which the ratio of the number of the cold storage material containers 47 to the number of the refrigerant tubes 45 is arranged at a predetermined ratio is arranged in the left air passage 72b that communicates with the air outlet provided on the passenger seat side in the core portion 400. Has been. Specifically, in the region A, seven cold storage material containers 47 are arranged for the 22 refrigerant tubes 45. Therefore, the ratio of the number of the cold storage material containers 47 to the number of the refrigerant tubes 45 is 7/22.

  On the other hand, in the right side air passage 72a that communicates with the air outlet provided on the driver's seat side in the core portion 400, the region B in which the ratio of the number of cold storage material containers 47 to the number of refrigerant tubes 45 is smaller than a predetermined ratio. Is arranged. Specifically, in the region B, three cold storage material containers 47 are arranged for the 22 refrigerant tubes 45. Therefore, the ratio of the number of the cold storage material containers 47 to the number of the refrigerant tubes 45 is 3/22.

  As described above, the region A in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is a predetermined ratio is disposed in the air passage 72b that allows air to flow to the outlet on the passenger seat side. Furthermore, the 2nd area | region B in which the ratio of the number of the cool storage material containers 47 with respect to the number of the refrigerant pipes 45 is less than a predetermined ratio is arrange | positioned in the air path 72a which flows air to the blower outlet by the side of a driver's seat. Thereby, the fall of the cooling performance by the side of a driver's seat can be suppressed.

  In the present embodiment, the same effect obtained from the configuration common to the first embodiment can be obtained as in the first embodiment.

  Further, in the present embodiment, in the core portion 400 of the evaporator 40, the region A in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is a predetermined ratio is the blower provided on the passenger seat side. It arrange | positions at the air path 72b which flows air to an exit. In addition, the region B in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is smaller than a predetermined ratio is arranged in the air passage 72a for flowing air to the air outlet provided on the driver's seat side.

  Therefore, although the maximum cooling performance on the driver's seat side is lower than that in the second embodiment, not only the cool storage material 80 stored in the cool storage material container 47 provided in the area A on the passenger seat side, but also the driving Since the entire evaporator 40 is kept at a low temperature by the cool storage material 80 housed in the cool storage material container 47 provided in the seat-side region B, the cool storage performance can be improved.

(Fourth embodiment)
A cold storage heat exchanger according to a fourth embodiment of the present invention will be described. FIG. 12 is an arrow view of the evaporator 40 as a cold storage heat exchanger viewed from the direction of arrow III in FIG. In the first embodiment, as shown in FIG. 2, in the core portion 400 of the evaporator 40, the right side region A in which the wind speed is faster is higher in the refrigerant tube 45 than the left side region B in which the wind speed is slow. The ratio of the number of the cool storage material containers 47 to the number is increasing.

  On the other hand, in the present embodiment, as shown in FIG. 12, in the core portion 400 of the evaporator 40, the right region B where the wind speed is fast is higher than the left region A where the wind speed is slow. The ratio of the number of the cool storage material containers 47 to the number of is reduced. In FIG. 3, the first region A is arranged in the right region where the wind speed is fast, and the second region B is arranged in the left region where the wind speed is slow. In FIG. 12, in the right region where the wind speed is fast, Region B is arranged, and region A is arranged in the left region where the wind speed is slow.

  Of the core part 400 of the evaporator 40, the left region where the wind speed is slow has a smaller amount of heat exchange than the right region where the wind speed is fast, and therefore contributes less to the cooling performance. That is, if the cool storage material container 47 is concentrated and arranged in the right region where the wind speed is fast, the cooling performance is greatly reduced. However, if the cool storage material container 47 is concentrated and placed in the left region where the wind speed is slow, the cooling performance is reduced. The degree of decrease is small.

  Therefore, by arranging the area A in which the cool storage material containers 47 are concentrated and arranged in the left area where the heat exchange amount is small, the degree of deterioration of the cooling performance of the entire evaporator 40 can be reduced.

  In the present embodiment, the same effect obtained from the configuration common to the first embodiment can be obtained as in the first embodiment.

  In the air conditioning case 70, the direction of the air blown from the blower 50 is changed to the core part 400 at a part away from the blower 50, and the part away from the blower 50 is closer to the core part than the part near the blower 50. The air volume of the air that flows in is increased. Further, the region B in which the ratio of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 is small is formed in a portion close to the blower 50. Therefore, the degree of deterioration of the cooling performance of the entire evaporator 40 can be reduced.

(Other embodiments)
(1) In each of the above embodiments, two regions having different ratios of the number of the regenerator containers 47 to the number of the refrigerant tubes 45 are formed in the core part 400. However, the regenerator containers for the number of the refrigerant tubes 45 are used. Three or more regions having different ratios of the number 47 may be formed.

  (2) In each of the above-described embodiments, the vehicle air conditioner having the air conditioning case 70 configured such that the air volume flowing into the core portion 400 is larger in the part away from the blower 50 than in the part near the blower 50. However, the present invention can also be applied to a vehicle air conditioner having a configuration different from that of the air conditioning case 70.

  (3) An example of a vehicle in which the driver's seat is located on the right side in the vehicle width direction of the vehicle and the passenger seat is located on the left side in the vehicle width direction of the vehicle is shown. The present invention can also be applied to a vehicle whose seat is located on the vehicle width direction road side of the vehicle.

  In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily indispensable except for the case where it is clearly indicated that the element is essential and the case where the element is clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. In each of the above embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, etc., unless otherwise specified, or in principle limited to a specific material, shape, positional relationship, etc. The material, shape, positional relationship, etc. are not limited.

(Summary)
According to the first aspect shown in part or all of the above embodiments, the plurality of refrigerant tubes arranged in one direction and the fins arranged in the air passage formed between the plurality of refrigerant tubes. And a cold storage material container that houses the cold storage material and is disposed in an air passage formed between the plurality of refrigerant tubes. The core portion includes a first region in which a ratio of the number of cold storage material containers to the number of refrigerant tubes is a predetermined ratio, and a second ratio in which the ratio of the number of cold storage material containers to the number of refrigerant tubes is less than a predetermined ratio. And a region.

  Moreover, according to the 2nd viewpoint, a core part cools the air ventilated from the air blower provided in the air-conditioning case, and the 1st area | region is the air ventilated from an air blower rather than a 2nd area | region. It is formed in the position where there is much air volume. Therefore, the air volume distribution of the air flowing out from the evaporator 40 can be made uniform.

  Moreover, according to the 3rd viewpoint, a core part cools the air ventilated from the air blower provided in the air-conditioning case, and the 1st area | region is the air ventilated from the air blower rather than the 2nd area | region. It is formed at a position where there is little airflow.

  Of the core part of the evaporator, the region where the air volume is low and the air velocity is low has a small contribution to the cooling performance because the amount of heat exchange is smaller than the region where the air volume is high and the air velocity is high. That is, if the cool storage container is concentrated in the right area where the wind speed is fast, the cooling performance is greatly reduced, but if the cool storage container is concentrated in the left area where the wind speed is slow, the cooling performance is degraded. The degree of is small. Therefore, by arranging the region A in which the cool storage material containers 47 are concentrated and arranged in the left region where the air volume is small and the heat exchange amount is small, the degree of deterioration of the cooling performance of the entire evaporator can be reduced.

  Moreover, according to the 4th viewpoint, the direction of the air ventilated from a blower changes to the core part side in the site | part which left | separated from the blower, and the site | part away from the fan is more core than the site | part near a fan. The first area is formed in a part away from the blower. Therefore, it is possible to make the air volume distribution of the air flowing out of the evaporator uniform.

  In addition, according to the fifth aspect, the air-conditioning case has a direction in which the direction of air blown from the blower is changed to the core side at a portion away from the blower, and the portion away from the blower is more core than the portion near the blower. The first area is formed in a portion close to the blower. Therefore, in a vehicle air conditioner having an air conditioning case configured so that the air volume flowing into the core portion is greater in the part away from the fan than in the part close to the fan, the air volume distribution of the air flowing out from the evaporator Can be made uniform.

  Further, according to the sixth aspect, the independent temperature for independently controlling the temperature of the air flowing out from the air outlet provided on the driver seat side in the passenger compartment and the air flowing out from the air outlet provided on the passenger seat side. It is used for a control-type vehicle air conditioner, and in the core portion, the first area is arranged in an air passage that allows air to flow to the air outlet provided on the passenger seat side, and the second area is on the driver seat side. It arrange | positions in the air path which flows air into the blower outlet provided in. Therefore, the maximum cooling performance on the driver's seat side that is frequently used can be secured, and further, the cooling performance on the driver's seat side can be secured even at the time of idling stop.

DESCRIPTION OF SYMBOLS 1 Refrigeration cycle apparatus 40 Evaporator 45 Refrigerant tube 46 Fin 47 Cold storage material container 50 Blower 70 Air conditioning case 80 Cold storage material 400 Core part

Claims (6)

A regenerative heat exchanger,
A plurality of refrigerant tubes (45) arranged in one direction;
Fins (46) disposed in an air passage formed between the plurality of refrigerant tubes;
A regenerator container (47) disposed in an air passage formed between the plurality of refrigerant tubes and containing a regenerator material (80);
The core portion has a first region (A) in which a ratio of the number of the regenerator containers to the number of the refrigerant tubes is a predetermined ratio;
A cold storage heat exchanger having a second region (B) in which a ratio of the number of the cold storage material containers to the number of the refrigerant tubes is smaller than the predetermined ratio. The core portion cools air blown from a blower provided in an air conditioning case,
The regenerative heat exchanger according to claim 1, wherein the first region is formed at a position where an amount of air blown from the blower is larger than that of the second region. The core portion cools air blown from a blower provided in an air conditioning case,
The regenerative heat exchanger according to claim 1, wherein the first region is formed at a position where an amount of air blown from the blower is smaller than that of the second region. In the air conditioning case, the direction of the air blown from the blower changes to the core part side at a part away from the blower, and the part away from the blower flows into the core part than the part near the blower. It is configured to increase the air volume of the air
The cold storage heat exchanger according to claim 2, wherein the first region is formed in a part away from the blower. In the air conditioning case, the direction of the air blown from the blower changes to the core part side at a part away from the blower, and the part away from the blower flows into the core part than the part near the blower. It is configured to increase the air volume of the air
The cold storage heat exchanger according to claim 3, wherein the first region is formed in a portion close to the blower. Used in an air conditioner for an independent temperature control system that independently controls the temperature of the air flowing out from the air outlet provided on the driver seat side in the passenger compartment and the air flowing out from the air outlet provided on the passenger seat side. And
Of the core portion, the first region is disposed in an air passage that allows air to flow to the outlet provided on the passenger seat side, and the second region allows air to flow to the outlet provided on the driver seat side. The regenerative heat exchanger according to claim 1, which is disposed in the air passage.

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