JP2018035975A - Evaporator with cold storage function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an evaporator with a cold storage function capable of draining condensed water which is generated on an outer surface of a cold storage material container more smoothly.SOLUTION: A cold storage material sealing part 24 is provided at a cold storage material container 16 arranged in a plurality of first gaps out of all gaps of an evaporator with a cold storage function. At a lower end edge 29 of the cold storage material sealing part 24, one inclined part 31 is provided which inclines downward toward the windward side from the leeward side. On the outer surfaces of both right and left side walls 32 located in a range of a ventilation direction of a heat exchange core part in the cold storage material sealing part 24, first to third condensed water drain grooves 33, 34, 35 are formed which have constant flow passage length vertically, in which both upper and lower ends are opened, and which flow the condensed water from above to below and drain it from lower end openings. The lower end of the third condensed water drain groove 35 is opened at the inclined part 31 of the lower end edge 29 of the cold storage material sealing part 24.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an evaporator with a cold storage function.

  In this specification and claims, the top and bottom, left and right (up and down, left and right in FIG. 1) viewed from the downstream side in the ventilation direction indicated by arrow X in FIGS.

  For example, for the purpose of protecting the environment and improving the fuel consumption of an automobile, an automobile that automatically stops the engine when the vehicle stops, such as waiting for a signal, has been proposed.

  However, in a normal car air conditioner, when the engine is stopped, the compressor using the engine as a driving source stops, so that the refrigerant (medium for transporting cold heat) is not supplied to the evaporator, and the cooling capacity is rapidly reduced. There is a problem.

  Therefore, in order to solve such problems, the evaporator is provided with a cold storage function, and when the engine stops and the compressor stops, the cold stored in the evaporator is discharged to cool the vehicle interior. Is considered.

  As an evaporator with this type of cool storage function, the applicant previously provided a plurality of flat refrigerant flow pipes having a longitudinal direction in the vertical direction and a width direction in the ventilation direction, and a hollow cool storage material enclosing portion. The refrigerant storage pipe is provided with a heat storage core portion having fins and a cold storage material container in which the cold storage material is enclosed, and fins, and is arranged at intervals in the ventilation direction in the heat exchange core portion Are arranged at intervals in the left-right direction, so that a gap is formed between the tube sets consisting of refrigerant flow pipes adjacent to each other in the left-right direction, and the cold storage material container has a longitudinal direction in the up-down direction. And is arranged so as to be in contact with the refrigerant flow pipe at a part of the total gap and the plurality of first gaps. Remaining The lower end edge of the regenerator material enclosing part of the regenerator container is horizontal in the ventilation direction, and the heat in the regenerator material enclosing part of the regenerator container On the outer surfaces of the left and right side walls of the part located within the range of the ventilation direction of the exchange core part, the upper and lower ends are open and the upper and lower ends are open, and the lower end is opened by flowing condensed water downward from above. A plurality of condensate drainage grooves are formed at intervals in the ventilation direction, and the lower end of at least one of the condensate drainage grooves among all the condensate drainage grooves is the lower end of the cool storage material enclosure portion of the cool storage material container An evaporator with a cold storage function opened at the edge was proposed (see Patent Document 1).

  According to the evaporator with a cold storage function described in Patent Document 1, during normal cooling when the compressor is operating, the cold heat of the refrigerant flowing in the refrigerant flow pipe passes through the portion in contact with the refrigerant flow pipe in the cold storage material container. When the compressor stops, the cold heat stored in the cool storage material is in contact with the refrigerant circulation pipe in the cool storage material container. It is transmitted to the fins arranged in the ventilation gap through the part and the refrigerant flow pipe, and is cooled by the air flowing through the ventilation gap from the fin. When the engine stops and the compressor stops Thus, it is possible to cool the passenger compartment by using the cold energy stored in the evaporator, and a rapid decrease in the cooling capacity when the engine is stopped is suppressed.

  Moreover, since the condensed water which generate | occur | produced on the cool storage material container outer surface might freeze at the time of the action | operation of a compressor, it is necessary to drain the said condensed water. According to the evaporator with a cool storage function described in Patent Document 1, the condensed water generated on the outer surface of the cool storage material container accumulates in the condensate drainage groove and flows down in the condensate drainage groove to the lower end edge of the cool storage material enclosure. It moves, falls from here and drains, and the condensed water which generate | occur | produced on the outer surface of the cool storage material container can be drained smoothly.

  However, depending on the amount of the condensed water generated, the condensed water that has flowed down in the condensed water drainage groove and moved to the horizontal lower edge of the regenerator enclosing portion remains at the lower edge due to the balance between surface tension and gravity, There is a case where the condensed water cannot be drained smoothly because it is difficult to fall downward.

JP 2014-126307 A

  In view of the above circumstances, an object of the present invention is to provide an evaporator with a cold storage function capable of draining the condensed water generated on the outer surface of the cold storage material container more smoothly.

  In order to achieve the above object, the present invention comprises the following aspects.

1) A cool storage material in which a plurality of flat refrigerant flow pipes having a longitudinal direction directed in the vertical direction and a ventilation direction in the width direction and a hollow cool storage material enclosing portion are provided and the regenerator material is enclosed in the cool storage material enclosing portion A heat exchange core part having a container and fins, and in the heat exchange core part, a plurality of refrigerant flow pipes are arranged at intervals in the left-right direction, so that the refrigerant flow pipes adjacent to each other in the left-right direction A gap is formed therebetween, and the cold storage material container has a flat shape in which the longitudinal direction is directed in the vertical direction and the width direction is directed in the ventilation direction, and a part of the entire gap is formed in the plurality of first gaps. Ventilation of the heat exchange core portion in the cool storage material enclosure portion of the cool storage material container is disposed in contact with the coolant circulation pipe, and the fins are disposed in contact with the coolant circulation pipe in the remaining plurality of second gaps of the entire gap. Range of directions On the outer wall surface of at least one of the left and right side walls of the portion located inside, the upper and lower ends are open and the upper and lower ends are open and the lower end is opened by flowing condensed water downward from above A plurality of condensate drainage grooves are formed at intervals in the ventilation direction, and the lower end of at least one of the condensate drainage grooves among all the condensate drainage grooves is the lower end of the cool storage material enclosure portion of the cool storage material container It is an evaporator with a cold storage function that opens at the edge,
At least one inclined portion inclined upward or downward from the leeward side toward the windward side is provided at the lower end edge of the cold storage material enclosure portion of the cold storage material container, and at least any one condensed water drainage is provided in the inclined portion. Evaporator with cool storage function where the lower end of the groove is open.

  2) One inclined part inclined downward from the leeward side toward the windward side is provided on the entire lower end edge of the cool storage material enclosing part of the cool storage material container, and the lower end of the cool storage material enclosing part of the cool storage material container The evaporator with a regenerative function according to 1) above, wherein an inclined groove portion inclined to the windward side from the upper side to the lower side is provided at a lower portion of the condensate drainage groove opened to the inclined portion provided at the lower end edge.

  3) A first inclined portion inclined downward from the leeward side toward the windward side and a second inclination inclined upward from the leeward side toward the windward side at the lower end edge of the cool storage material enclosure portion of the cold storage material container The lower end of the condensate drainage groove that opens to the first inclined portion provided at the lower end edge of the cool storage material enclosure of the cool storage material container, windward from above to below The evaporator with a cold storage function as described in 1) above, wherein an inclined groove portion is provided.

  4) The first inclined portion is provided on the windward side, the second inclined portion is provided on the leeward side, and the leeward side end portion of the first inclined portion and the windward end portion of the second inclined portion are connected to each other. 3) Evaporator with cool storage function.

  5) The first inclined portion is provided on the leeward side, the second inclined portion is provided on the leeward side, and the windward end portion of the first inclined portion and the leeward end portion of the second inclined portion are connected to each other. 3) Evaporator with cool storage function.

  6) In the heat exchange core section, a plurality of pipe assemblies composed of two refrigerant flow pipes arranged at intervals in the ventilation direction are arranged at intervals in the left-right direction, so that adjacent pipe assemblies in the left-right direction are connected to each other. With a cold storage function as described in 4) or 5) above, in which a gap is formed between the two refrigerant circulation pipes arranged in the ventilation direction, and the connecting portion between the first inclined portion and the second inclined portion is located between Evaporator.

  7) The cool storage material container is composed of two metal container constituent plates in which peripheral strips having a certain width are joined to each other, and the portions excluding the joined strips in both container constituent plates are outward. The regenerator material enclosing part is provided by being swelled, and a joining portion consisting of a band-shaped part of the container constituting plate is located in the middle part of the thickness direction of the regenerator material enclosing part, and the lower end edge of the regenerator material enclosing part is Of the above-mentioned 1) to 6), below the inclined part, is formed of a band-like part joined to each other of the two container constituent plates and is inclined in the same direction as the inclined part of the regenerator enclosing part An evaporator with a cold storage function according to any one of the above.

  According to the evaporator with a cold storage function of 1) to 7) above, at least one inclined portion inclined upward or downward from the leeward side toward the windward side is provided at the lower end edge of the cold storage material enclosure portion of the cold storage material container. Since the lower end of at least one of the condensate drainage grooves is open in the inclined portion, the lower end is generated on the outer surface of the cool storage material container, and the lower end is at the lower end edge of the cool storage material enclosure portion of the cool storage material container. Condensed water that has entered the condensate drainage groove that opens in the provided inclined part flows down in the condensate drainage groove, moves to the inclined part at the lower edge of the cool storage material enclosure part, and further along the inclined part. Flow toward the lower end of the inclined portion. Therefore, a large amount of condensed water gathers in the inclined lower end portion of the inclined portion, and gravity acting on the condensed water becomes larger than the surface tension in a short time and falls downward from the inclined lower end portion of the inclined portion. As a result, the condensed water generated on the outer surface of the cool storage material container can be drained more smoothly. In particular, in a state where the amount of condensed water generated is small, such as when the air volume is low, the drainage performance of the lower part of the cool storage material container is improved.

  According to the evaporator with a cold storage function of 2) above, the inclined groove portion of the condensed water drainage groove opened to the inclined direction of the inclined portion and the inclined portion provided at the lower end edge of the cold storage material enclosure portion of the cold storage material container Therefore, the condensed water flowing down in the condensed water drainage groove smoothly moves to the inclined portion and flows along the inclined portion toward the inclined lower end portion of the inclined portion.

  According to the evaporator with a cold storage function of 3) to 5) above, the inclination direction of the first inclined portion and the lower end are open to the first inclined portion provided at the lower end edge of the cold storage material enclosure portion of the cold storage material container. Since the inclination direction of the inclined groove portion of the condensed water drainage groove coincides, the condensed water flowing down in the condensed water drainage groove smoothly transitions to the inclined portion, and the first inclined portion of the first inclined portion extends along the inclined portion. It flows toward the inclined lower end.

  When the evaporator with the cold storage function of 4) has the configuration of 6), the following effects can be obtained. That is, of the two refrigerant flow pipes arranged at intervals in the ventilation direction, the leeward refrigerant flow pipe is connected to the leeward lower header part, and the windward refrigerant flow pipe is connected to the windward lower header part. Usually, an inclined portion inclined downward toward the leeward side is provided at the leeward end of the upper surface of the leeward lower header portion, and downward toward the leeward side at the upper windward end portion of the upper surface of the leeward lower header portion. An inclined portion is provided. Therefore, the condensed water that has fallen onto the windward lower header portion from the lower slope end portion of the first inclined portion flows down along the inclined portion of the upper surface of the windward lower header portion and is drained downward, and the second inclined portion. Condensed water that has fallen onto the leeward lower header portion from the lower end of the spilled water flows down along the sloped portion of the upper surface of the leeward lower header portion and is drained downward, improving drainage.

  When the evaporator with a cold storage function of 5) has the configuration of 6), the following effects are obtained. That is, of the two refrigerant flow pipes arranged at intervals in the ventilation direction, the leeward refrigerant flow pipe is connected to the leeward lower header part, and the windward refrigerant flow pipe is connected to the windward lower header part. Usually, a groove-shaped drainage part opened upward is provided between the lower header parts. Therefore, the condensed water that has dropped downward from the inclined lower end portions of the first inclined portion and the second inclined portion enters the drainage portion and is drained downward from the drainage portion, thereby improving drainage.

  According to the evaporator with the cold storage function of 7) above, the flow direction of the condensed water flowing along the inclined portion of the lower end edge of the cold storage material enclosing portion matches the flow direction of the condensed water flowing along the inclined joint portion. Therefore, the flow of condensed water becomes smooth and drainage improves.

1 is a partially cutaway perspective view showing an overall configuration of an evaporator with a cold storage function according to the present invention. It is a left view which shows the cool storage material container used for the evaporator with a cool storage function of FIG. FIG. 3 is a partially enlarged view of FIG. 2. It is an AA line expanded sectional view of FIG. FIG. 3 is an enlarged sectional view taken along line B-B in FIG. 2. It is a left view which shows the 1st modification of the cool storage material container used for the evaporator with a cool storage function of FIG. It is the elements on larger scale of FIG. It is a left view which shows the 2nd modification of the cool storage material container used for the evaporator with a cool storage function of FIG. It is the elements on larger scale of FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  Furthermore, in the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  FIG. 1 shows the entire structure of an evaporator with a cold storage function according to the present invention, and FIGS.

  In FIG. 1, an evaporator with a cold storage function (1) is composed of an aluminum upper header tank (2) and an aluminum upper header tank (2) arranged in the vertical direction with the longitudinal direction facing the left and right direction and the width direction facing the ventilation direction. An aluminum lower header tank (3) and a heat exchange core portion (4) provided between the header tanks (2) and (3) are provided.

  The upper header tank (2) includes a leeward upper header portion (5) located on the leeward side and an upwind header portion (6) located on the leeward side and integrated with the leeward upper header portion (5). And. A refrigerant inlet (7) is provided at the left end of the leeward upper header portion (5), and a refrigerant outlet (8) is provided at the left end of the leeward upper header portion (6). The lower header tank (3) includes a leeward lower header portion (9) located on the leeward side and an upwind lower header portion (11) located on the leeward side and integrated with the leeward lower header portion (9). And. An inclined portion (9a) that is inclined downward toward the leeward side is provided at the leeward end of the upper surface of the leeward lower header portion (9), and is provided at the upper windward end portion of the upper surface of the leeward lower header portion (11). An inclined portion (11a) inclined downward toward the windward side is provided. Further, a groove portion (12) that opens upward and extends in the left-right direction is provided between the lower header portions (9), (11) of the lower header tank (3) (see FIGS. 2 and 3). Although not shown in the figure, a plurality of drain holes are provided at intervals in the left-right direction in the bottom wall portion of the groove portion (12) between the lower header portions (9), (11) in the lower header tank (3). Is formed.

  In the heat exchanging core part (4), a plurality of, in this case, two aluminum flat refrigerants arranged at intervals in the ventilation direction with the longitudinal direction oriented vertically and the width direction oriented in the ventilation direction A plurality of pipe sets (14) made up of pipes (13) are arranged at intervals in the left-right direction, so that adjacent to the pipe set (14) made up of two refrigerant flow pipes (13) arranged in the ventilation direction. A gap (15A) (15B) is formed between the mating objects. The upper end portion of the refrigerant flow pipe (13) arranged on the leeward side is connected to the leeward upper header portion (5), and the lower end portion is connected to the leeward lower header portion (9). Further, the upper end portion of the refrigerant flow pipe (13) arranged on the windward side is connected to the windward upper header portion (6), and the lower end portion thereof is connected to the windward lower header portion (11).

  An aluminum regenerator container (16) in which a regenerator material is sealed in a part of the total gaps (15A) and (15B) in the heat exchange core (4) and in a plurality of first gaps (15A) It arrange | positions so that two refrigerant | coolant flow pipes (13) which comprise a group (14) may be straddled, and it joins with both refrigerant | coolant flow pipes (13) with the brazing material. Hereinafter, joining with a brazing material is referred to as brazing. Of the entire gap (15A) (15B) in the heat exchange core (4), the remaining plurality of second gaps (15B) are made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and the wave crest extends in the ventilation direction. Corrugated outer fins (17) comprising a wave bottom portion extending in the ventilation direction and a connecting portion connecting the wave top portion and the wave bottom portion are provided in two refrigerant flow pipes (13) constituting each pipe assembly (14). It arrange | positions so that it may straddle, and is brazed to both refrigerant | coolant distribution pipes (13). There are a plurality of, here two, second gaps (15B) between two first gaps (15A) adjacent in the left-right direction. The number of second gaps (15B) between two first gaps (15A) adjacent in the left-right direction may be 3 or more, and the upper limit is preferably 7. In addition, outer fins (17) are also arranged outside the pipe assemblies (14) at both left and right ends so as to straddle the two refrigerant circulation pipes (13) constituting the pipe assembly (14). 13), and further, aluminum side plates (18) are disposed outside the outer fins (17) at the left and right ends, and are brazed to the outer fins (17).

  The windward end of the outer fin (17) is at the same position in the ventilation direction as the windward end of the windward refrigerant flow pipe (13), and the windward end of the outer fin (17) is the leeward refrigerant flow pipe ( It is in a position slightly protruding from the leeward side end of 13), for example, about 1 mm toward the leeward side (see FIG. 4). The width of the outer fin (17) in the ventilation direction is the full width of the heat exchange core (4) in the ventilation direction.

  In the case of the evaporator (1) of this embodiment, the refrigerant passes through the refrigerant inlet (7) and enters the leeward upper header portion (5) of the evaporator (1) and passes through the entire refrigerant circulation pipe (13). It flows out from the refrigerant outlet (8) of the upper upper header section (6).

  As shown in FIGS. 2 to 5, the regenerator material container (16) is a flat, hollow shape having a substantially vertical rectangle in which the longitudinal direction is directed in the vertical direction and the width direction is directed in the ventilation direction, and the heat exchange core portion (4 ) Of the container body part (19) located within the full width of the ventilation direction and brazed to the two refrigerant flow pipes (13) of each pipe assembly (14), and the leeward of the container body part (19) It consists of a part of the side edge part, here, only the upper part, and an outward projecting part (21) provided so as to project to the leeward side from the leeward side end part of the outer fin (17). The outward projecting portion (21) is provided over a certain length from a portion slightly lowered from the upper end of the cold storage material container (16).

  The cold storage material container (16) is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the peripheral strips (22a) (23a) having a certain width are brazed to each other. It is composed of two substantially vertical rectangular aluminum container constituting plates (22) and (23). Hereinafter, a brazed portion (joint portion) brazed between the strips (22a) and (23a) of the container constituting plates (22) and (23) is indicated by (25). The cool storage material container (16) has a hollow cool storage material enclosing portion (2) by extruding the portions excluding the strips (22a) and (23a) of the container constituting plates (22) and (23) outward ( 24) is formed from the container body portion (19) to the outwardly projecting portion (21), and a cold storage material (not shown) is placed in the cold storage material enclosing portion (24). The regenerator material enclosing part (24) is a first enclosing part (24a) existing in a part (a part below the chain line Y in FIG. 2) where only the container main body part (19) in the regenerator material container (16) is provided. ), And the portion of the cool storage material container (16) provided with the container body portion (19) and the outwardly projecting portion (21) (from the chain line Y in FIG. 2). A second enclosure portion (24b) existing across the container main body portion (19) and the outward projecting portion (21). The thickness of the part which exists in the container main-body part (19) in the 1st enclosure part (24a) and the 2nd enclosure part (24b) of the cool storage material enclosure part (24) is equal. The regenerator material enclosure part (24) of the regenerator material container (16) protrudes in both the left and right directions from the braided part (25) between the strips (22a) (23a) of both container component plates (22) and (23). It has an upwind edge (26), a leeward edge (27), an upper edge (28) and a lower edge (29), and the brazing part (25) is arranged in the thickness direction of the regenerator material enclosing part (24). Located in the middle.

  The windward edge (26) of the cool storage material enclosure (24) of the cold storage container (16) is entirely vertical from the first enclosure (24a) to the second enclosure (24b), and the leeward edge (27 ) In the first enclosure part (24a) and the second part (27b) in the second enclosure part (24b) are each vertical, and the upper edge (28) is horizontal. It is. One inclined portion (31) inclined downward from the leeward side toward the windward side is provided on the entire lower end edge (29) of the cold storage material enclosure (24) of the cold storage material container (16). Below the inclined part (31) of the lower edge (29) of the cold storage material enclosing part (16) in the brazed part (25) of the belt-like parts (22a) (23a) of the two container component plates (22) (23) In the located part, one inclined brazing part (25a) inclined in the same direction as the inclined part (31) of the lower end edge of the regenerator material enclosing part (16), that is, the whole is inclined downward from the leeward side toward the leeward side. (Inclined joints) are provided.

  On the outer surfaces of the left and right side walls (32) of the part of the cool storage material enclosure (24) of the cool storage material container (16) on the left and right side walls (32), the upper and lower ends have a constant channel length in the vertical direction. And a plurality of condensed water drain grooves (33), (34), and (35) for draining the condensed water from above to drain from the lower end opening are formed at intervals in the ventilation direction. Each condensate drainage groove (33), (34), (35) is provided in a portion existing in the container body (19) in the left and right side walls (32) of the cool storage material enclosure (24) of the cool storage material container (16). The two drainage groove protrusions formed between the two drainage groove protrusions (36) bulging outward and forming one condensed water drainage groove (33) (34) (35) The length of the part (36) is longer than the width of the container body part (19) of the cold storage material container (16) in the ventilation direction. The bulge heights of all the drain groove convex portions (36) of the left and right side walls (32) of each cold storage material container (16) are equal, and the bulge of the convex portion for the expansion portion (38) described later It is below the height, and the bulging ends of all the drain groove convex portions (36) are located on the same vertical plane. Further, at least a part of the bulging end of the drain groove convex portion (36) is connected to the two refrigerant flow pipes (13) constituting the left and right pipe assemblies (14) forming the first gap (15A). It is attached. Two adjacent condensate drains (33), (34) and (35) share the drain groove convex part (36) located between both condensate drains (33), (34) and (35). . Condensate drainage grooves (33) (34) (35) and drainage groove projections (36) on the left side wall (32) and condensate drainage grooves (33) (34) (35) and on the right side wall (32) The drain groove convex portion (36) is provided so as to be shifted in the ventilation direction in the same horizontal plane so as not to overlap with the whole. A small amount of air also flows in the condensed water drain grooves (33), (34), and (35).

  In the all-condensate drainage groove (33) (34) (35), the upper end opens upward and the lower end is either one of the windward side and the leeward side of the cool storage material container (16). The first condensate drainage groove (33) that opens toward the windward side here, and the upper end of the other one of the windward side and the leeward side of the cool storage material container (16) in the ventilation direction The second condensate drainage groove (34) that opens toward the leeward side of the cold storage container (16) on the second side, here the leeward side, and the leeward side of the cold storage material container (16) at the upper end. There is a third condensate drainage groove (35) which opens toward the side and whose lower end opens downward. The lower ends of the first and second condensed water drain grooves (33) and (34) open to the windward edge (26) of the cool storage material enclosure (24), and the lower end of the third condensed water drain groove (35) is the cold storage. An opening is formed in the inclined portion (31) of the lower end edge (29) of the material enclosing portion (24). Moreover, the upper end of the 2nd condensed water drainage groove (34) and the upper end of the 3rd condensed water drainage groove (35) provided in the 1st enclosure part (24a) are the leeward side edge of a cool storage material enclosure part (24). It opens to the first part (27a) of (27).

  An inclined groove portion (33a) is provided at least at a lower portion of the first condensed water drainage groove (33) and is inclined downward on the windward side. An inclined groove portion (34a) inclined downward on the windward side is provided at least at the lower portion of the second condensed water drainage groove (34). An inclined groove portion (35a) inclined to the windward side from the upper side to the lower side is provided at the lower part of the third condensed water drainage groove (35). The inclination direction with respect to the vertical line of the inclined groove part (35a) is the same as the inclination direction with respect to the vertical line of the inclined part (31) provided at the lower end edge (29) of the cool storage material enclosure part (24) in the cool storage material container (16). It is.

  In the container main body portion (19) of the cold storage material container (16), an offset aluminum inner fin (37) is disposed over substantially the entire vertical direction. The inner fin (37) includes a plurality of corrugated strips arranged in a vertical direction, each having a wave crest extending in the vertical direction, a wave bottom extending in the vertical direction, and a connecting portion connecting the wave crest and the wave bottom. The wave crests and wave crests of two wavy strips that are adjacent to each other in the vertical direction are displaced in the ventilation direction.

  The outwardly projecting portion (21) of the cool storage material container (16) extends over a certain length from a portion slightly below the upper end of the second portion (27b) of the leeward side edge (27) of the container body portion (19). The vertical length of the outward projecting portion (21) is shorter than the vertical length of the container main body portion (19). The vertical length of the outward projecting portion (21) is preferably 30% or less of the vertical length of the cold storage material container (16). The portion of the cool storage material enclosure (24) of the cool storage material container (16) that swells in the left and right side walls (32) on the outwardly projecting portion (21) and swells in both the left and right directions, and the horizontal dimension is the cool storage material enclosure An inflatable portion (21a) having a dimension equal to or greater than the lateral dimension of (24) is provided, and the inflatable portion (21a) is outside in the ventilation direction from the downstream end of the outer fin (17) in the ventilation direction (ventilation direction) It is located on the downstream side. The expansion part (21a) is formed of an expansion part convex part (38) provided on the left and right side walls (32) of the cool storage material enclosure part (24) and bulging outward.

  A cool storage material injection member (39) is fixed to the upper end portion of the outwardly projecting portion (21) of the cool storage material container (16), and the cool storage material passes through the cool storage material injection member (39) and the cool storage material enclosing portion (24 The cool storage material injection member (39) is sealed after the cool storage material is injected into the heat storage material enclosure (24).

  The evaporator with a cold storage function (1) described above includes a compressor that uses a vehicle engine as a drive source, a condenser that cools the refrigerant discharged from the compressor (refrigerant cooler), and an expansion valve that depressurizes the refrigerant that has passed through the condenser ( A refrigeration cycle is configured together with a decompressor, and is mounted as a car air conditioner on a vehicle, such as an automobile, that temporarily stops an engine that is a drive source of a compressor when the vehicle is stopped. When the compressor is operating, the low-pressure gas-liquid mixed-phase two-phase refrigerant compressed by the compressor and passed through the condenser and the expansion valve passes through the refrigerant inlet (7) and the evaporator with the cold storage function (1) Enters the leeward upper header portion (5) and flows out from the refrigerant outlet (8) of the leeward upper header portion (6) through the entire refrigerant flow pipe (13). And while a refrigerant | coolant flows through the inside of a refrigerant | coolant distribution pipe | tube (13), it heat-exchanges with the air which passes 2nd clearance gap (15B), and a refrigerant | coolant flows out into a gaseous phase.

  During operation of the compressor, the cold heat of the refrigerant flowing in the refrigerant flow pipe (13) is transferred to the container body (19) on the left and right side walls (32) of the cold storage material enclosure (24) of the cold storage container (16). It is transmitted directly to the cold storage material in the cold storage material container (16) via the bulging top wall of the drain groove convex portion (36) provided in the existing portion, and the bulging top wall of the drain groove convex portion (36). From the left and right side walls (32) through the part that is not brazed to the refrigerant flow pipe (13) and the inner fin (37) to the entire cool storage material in the cool storage material container (16) to store cold heat in the cool storage material. It is done.

  Further, when the compressor is operated, condensed water is generated on the surface of the cold storage material container (16), and the condensed water enters the first to third condensed water drain grooves (33), (34), (35), and the surface tension. The first to third condensed water drain grooves (33), (34) along the drain groove convex portions (36) on both sides of the first to third condensed water drain grooves (33), (34), (35). Accumulate in (35). When the amount of accumulated condensed water increases, the gravity acting on the accumulated condensed water becomes larger than the surface tension and flows down in the first to third condensed water drain grooves (33), (34), and (35). The condensed water flowing down in the first and second condensed water drainage grooves (33), (34) moves to the windward edge (26) of the cool storage material enclosure (24) and reaches the vertical windward edge (26). And flows down along the inclined portion (11a) and drains below the lower header tank (3). The condensed water flowing down in the third condensed water drainage groove (35) moves to the inclined portion (31) of the lower edge (29) of the regenerator material enclosing portion (24) and further winds along the inclined portion (31). It flows toward the upper end (inclined lower end). Here, since the inclination direction of the inclined part (31) and the inclination direction of the inclined groove part (35a) of the third condensed water drainage groove (35) coincide with each other, the inside of the third condensed water drainage groove (35) The condensed water that has flowed down smoothly moves to the inclined portion (31) of the lower end edge (29) and flows along the inclined portion (31) toward the inclined lower end portion. Therefore, a large amount of condensed water gathers in the inclined lower end portion of the inclined portion (31) in a short time, and the gravity acting on the condensed water becomes larger than the surface tension in a short time, from the inclined lower end portion of the inclined portion (31). It falls on the windward lower header portion (11) of the lower header tank (3), flows down along the inclined portion (11a), and is drained below the lower header tank (3).

  When the compressor is stopped, the cold stored in the cool storage material in the cool storage material container (16) is transferred to the container main body (19) on the left and right side walls (32) of the cool storage material enclosure (24) of the cool storage material container (16). ) Is directly transferred to the refrigerant flow pipe (13) through the bulging top wall of the drain groove convex portion (36) provided in the portion existing on the inner fin (37), and the refrigerant flows from the inner fin (37) to the left and right side walls (32). The refrigerant is transferred to the refrigerant flow pipe (13) through the portion not brazed to the pipe (13) and the bulging top wall of the drain groove convex portion (36), and further passes through the refrigerant flow pipe (13). It is transmitted to the outer fin (17) brazed on the opposite side of the cold storage container (16) in the pipe (13). The cold heat transmitted to the outer fin (17) is transmitted to the air passing through the second gap (15B) adjacent to the first gap (15A) where the cool storage material container (16) is disposed. The cold heat transmitted to the outer fin (17) is transmitted to the air passing through the second gap (15B) adjacent to the first gap (15A) where the cool storage material container (16) is disposed. Therefore, even if the temperature of the wind that has passed through the evaporator (1) rises, the wind is cooled, so that a rapid decrease in the cooling capacity is prevented.

  In the embodiment described above, the condensate drainage grooves (33) (33) (on the outer surfaces of the left and right side walls (32) of the portion of the cool storage material enclosure (24) of the cool storage material container (16) existing in the container main body (19). 34) (35) and a drain groove convex portion (36) are provided, but the present invention is not limited to this, and condensate drain grooves (33) (34) (35) and A drain groove convex portion (36) may be provided.

  6 and 7 show a first modification of the cool storage material container used in the evaporator with the cool storage function of FIG.

  In the case of the cold storage material container (50) shown in FIGS. 6 and 7, the first inclined portion (51) inclined downward from the leeward side toward the windward side at the lower end edge (29) of the cold storage material enclosure (24). And a second inclined portion (52) inclined upward from the leeward side toward the windward side. The first inclined portion (51) is provided on the windward half of the lower end edge (29) of the regenerator material enclosing portion (24), and the second inclined portion (52) is the lower end edge (29 of the regenerator material enclosing portion (24)). ) And the leeward side end of the first inclined part (51) and the leeward side end of the second inclined part (52) are connected. Here, the length of the first inclined portion (51) and the second inclined portion (52) and the inclination angle with respect to the horizontal line are equal.

  A first inclined portion (51) of the lower edge (29) of the regenerator material enclosing portion (16) in the brazed portion (25) of the belt-like portions (22a) (23a) of the two container constituent plates (22) (23); The part located below the second inclined part (52) is inclined in the same direction as the first inclined part (51) and the second inclined part (52) of the lower end edge (29) of the regenerator material enclosing part (16). Two inclined brazing portions (25b) and (25c) are provided. That is, a first inclined brazing part (25b) inclined downward from the leeward side toward the windward side is provided below the first inclined part (51) of the lower end edge (29) of the regenerator material enclosing part (24). Similarly, a second inclined brazing portion (25c) inclined upward from the leeward side toward the windward side is provided below the second inclined portion (52).

  The lower end of the inclined groove part (35a) of some third condensed water drainage grooves (35) opens to the first inclined part (51) of the lower edge (29) of the regenerator material enclosing part (24), and the remaining third The lower end of the inclined groove portion (35a) of the condensed water drainage groove (35) opens to the second inclined portion (52) of the lower end edge (29) of the regenerator material enclosing portion (24).

  In a car air conditioner having an evaporator with a cold storage function equipped with the cold storage material container (50), the condensed water generated on the surface of the cold storage material container (16) is first to third condensed water drainage grooves (33 ), (34), (35), and the first to third drainage grooves (36) on both sides of the first to third condensed water drainage grooves (33), (34), and (35) due to surface tension. -It collects in the 3rd condensed water drainage groove (33) (34) (35). When the amount of accumulated condensed water increases, the gravity acting on the accumulated condensed water becomes larger than the surface tension and flows down in the first to third condensed water drain grooves (33), (34), and (35). The condensed water flowing down in the first and second condensed water drainage grooves (33), (34) moves to the windward edge (26) of the cool storage material enclosure (24) and reaches the vertical windward edge (26). And flows down along the inclined portion (11a) and drains below the lower header tank (3). The condensed water flowing down in the third condensed water drainage groove (35) moves to the first inclined portion (51) and the second inclined portion (52) of the lower end edge (29) of the regenerator material enclosing portion (24), and It flows along the first inclined portion (51) and the second inclined portion (52) toward the lower end of the inclined portion. Accordingly, a large amount of condensed water gathers in the inclined lower end portions of both inclined portions (51) and (52) in a short time, and gravity acting on the condensed water becomes larger than the surface tension in a short time, so that the first inclined portion (51 ) Falls on the windward lower header part (11) of the lower header tank (3), flows down along the inclined part (11a) and drains below the lower header tank (3). The lower header tank (3) falls from the inclined lower end portion of the second inclined portion (52) onto the leeward lower header portion (9) of the lower header tank (3) and flows down along the inclined portion (9a). It is drained below. In particular, the inclination direction of the first inclined portion (51) and the inclination direction of the inclined groove portion (35a) of the third condensed water drainage groove (35) whose lower end is opened to the first inclined portion (51) coincide. Therefore, the condensed water flowing down in the third condensed water drainage groove (35) smoothly moves to the first inclined portion (51) and moves toward the lower end of the inclined portion along the first inclined portion (51). It becomes easy to flow. Therefore, a large amount of condensed water gathers in the inclined lower end portion of the first inclined portion (51) in a short time, and the gravity acting on the condensed water becomes larger than the surface tension in a short time, and falls below the inclined lower end portion of the inclined portion. It will fall on the windward lower header part (11) of the header tank (3), and drainage efficiency will improve.

  8 and 9 show a second modification of the cool storage material container used in the evaporator with the cool storage function of FIG.

  In the case of the cool storage material container (60) shown in FIGS. 8 and 9, the first inclined portion (61) inclined downward from the leeward side toward the windward side is formed at the lower end edge (29) of the cool storage material enclosure (24). ) And a second inclined portion (62) inclined upward from the leeward side toward the windward side. The first inclined portion (61) is provided in the leeward half of the lower end edge (29) of the regenerator material enclosing portion (24), and the second inclined portion (62) is the lower end edge (29 of the regenerator material enclosing portion (24)). ) And the leeward end of the first inclined part (61) is connected to the leeward end of the second inclined part (62), and the first inclined part (61) and the first inclined part (61) The connecting portion with the two inclined portions (62) is located on the drainage portion (12) of the lower header tank (3). Here, the length of the first inclined portion (61) and the second inclined portion (62) and the inclination angle with respect to the horizontal line are equal.

  A first inclined portion (61) of the lower edge (29) of the regenerator material enclosing portion (16) in the brazed portion (25) of the belt-like portions (22a) (23a) of the two container constituent plates (22) and (23); The portion located below the second inclined portion (62) is inclined in the same direction as the first inclined portion (61) and the second inclined portion (62) of the lower end edge (29) of the regenerator material enclosing portion (16). The two inclined brazing portions (25d) and (25e) are provided. That is, a first inclined brazing part (25d) inclined downward from the leeward side toward the windward side is provided below the first inclined part (61) of the lower end edge (29) of the regenerator material enclosing part (24). Similarly, a second inclined portion (25e) inclined upward from the leeward side toward the windward side is provided below the second inclined brazing portion (62).

  The lower end of the inclined groove portion (35a) of some third condensed water drainage grooves (35) opens to the first inclined portion (61) of the lower end edge (29) of the regenerator material enclosing portion (24), and the remaining third The lower end of the inclined groove portion (35a) of the condensed water drainage groove (35) opens to the second inclined portion (62) of the lower end edge (29) of the regenerator material enclosing portion (24).

  In a car air conditioner having an evaporator with a cold storage function provided with the cold storage material container (60), the condensed water generated on the surface of the cold storage material container (16) is first to third condensed water drain grooves (33) when the compressor is operated. ), (34), (35), and the first to third drainage grooves (36) on both sides of the first to third condensed water drainage grooves (33), (34), and (35) due to surface tension. -It collects in the 3rd condensed water drainage groove (33) (34) (35). When the amount of accumulated condensed water increases, the gravity acting on the accumulated condensed water becomes larger than the surface tension and flows down in the first to third condensed water drain grooves (33), (34), and (35). The condensed water flowing down in the first and second condensed water drainage grooves (33), (34) moves to the windward edge (26) of the cool storage material enclosure (24) and reaches the vertical windward edge (26). And flows down along the inclined portion (11a) and drains below the lower header tank (3). The condensed water flowing down in the third condensed water drainage groove (35) moves to the first inclined portion (61) and the second inclined portion (62) of the lower end edge (29) of the regenerator material enclosing portion (24), and It flows along the first inclined part (61) and the second inclined part (62) toward the lower end of the inclined part. Therefore, a large amount of condensed water gathers in a short time at the inclined lower ends of both inclined portions (61) and (62), and the gravity acting on the condensed water becomes larger than the surface tension in a short time, and both inclined portions (61) It drops from the inclined lower end of (62) to the drainage section (12) of the lower header tank (3), and is drained from the drainage section (12) to the lower part of the lower header tank (3). In particular, the inclination direction of the first inclined portion (61) and the inclination direction of the inclined groove portion (35a) of the third condensate drainage groove (35) whose lower end is opened to the first inclined portion (61) coincide with each other. Therefore, the condensed water flowing down in the third condensed water drainage groove (35) smoothly moves to the first inclined portion (61) and moves toward the lower end of the inclined portion along the first inclined portion (61). It becomes easy to flow. Accordingly, a large amount of condensed water gathers in a short time at the inclined lower end portion of the first inclined portion (61), and the gravity acting on the condensed water becomes larger than the surface tension in a short time, and both inclined portions (61) (62) ) Falls on the drainage portion (12) of the lower header tank (3) from the inclined lower end portion, and drainage efficiency is improved.

  In the regenerator container (50) (60) of the first and second modifications described above, the length of the first inclined portions (51) (61) and the second inclined portions (52) (62) and the inclination with respect to the horizontal line The angles are equal to each other, but the present invention is not limited to this. At least one of the lengths of the first inclined portions (51) (61) and the second inclined portions (52) (62) and the inclined angle with respect to the horizontal line is used. Either one may be different.

  The evaporator with a cold storage function according to the present invention is suitably used in a refrigeration cycle constituting a car air conditioner for a vehicle that temporarily stops an engine that is a drive source of a compressor when the vehicle is stopped.

(1): Evaporator with cool storage function
(4): Heat exchange core
(13): Refrigerant distribution pipe
(14): Tube assembly
(15A) (15B): Gap
(16) (50) (60): Cold storage container
(17): Outer fin
(22) (23): Container component plate
(22a) (23a): Strip
(24): Cooling material enclosure
(25); Brazing part (joint part) of belt-like part
(25b) (25c) (25d) (25e): Inclined brazed part (inclined joint)
(29): The lower edge of the cool storage material enclosure
(31): Inclined part
(32): Left and right side walls of cool storage material enclosure
(33): 1st condensate drain
(34): Second condensate drain
(35): Third condensate drain
(35a): Inclined groove
(51) (61): 1st inclined part
(52) (62): Second inclined part

Claims (7)

A plurality of flat refrigerant flow pipes having a longitudinal direction directed in the vertical direction and a width direction directed in the ventilation direction, a cold storage material enclosure portion provided with a hollow cold storage material enclosure portion, and a cold storage material container enclosed with the cold storage material enclosure portion, and A heat exchange core part having fins, and a plurality of refrigerant flow pipes are arranged at intervals in the left-right direction in the heat exchange core part, so that the refrigerant flow pipes adjacent to each other in the left-right direction are arranged between each other. A gap is formed, and the cool storage material container has a flat shape in which the longitudinal direction is directed in the vertical direction and the width direction is directed in the ventilation direction, and the refrigerant flows in a part of the entire gap and in the plurality of first gaps. The fins are arranged so as to be in contact with the pipe, the fins are arranged so as to be in contact with the refrigerant flow pipes in the remaining plurality of second gaps of the entire gap, and the air exchange direction of the heat exchange core part in the cold storage material enclosure part of the cold storage material container range At the outer wall surface of at least one of the left and right side walls of the portion located at the upper and lower ends, the upper and lower ends are open, and the upper and lower ends are opened. A plurality of condensate drain grooves to be drained are formed at intervals in the ventilation direction, and the lower end of at least one of the condensate drain grooves of all the condensate drain grooves is the lower edge of the cool storage material enclosure of the cool storage container An evaporator with a cold storage function opened in
At least one inclined portion inclined upward or downward from the leeward side toward the windward side is provided at the lower end edge of the cold storage material enclosure portion of the cold storage material container, and at least any one condensed water drainage is provided in the inclined portion. Evaporator with cool storage function where the lower end of the groove is open. The whole lower end edge of the cool storage material enclosure part of the cool storage material container is provided with one inclined part inclined downward from the leeward side toward the windward side, and the lower end is the lower edge of the cool storage material enclosure part of the cool storage material container The evaporator with a cool storage function according to claim 1, wherein an inclined groove portion inclined toward the windward side from above to below is provided at a lower portion of the condensate drainage groove opened in the inclined portion. A first inclined portion inclined downward from the leeward side toward the windward side, and a second inclined portion inclined upward from the leeward side toward the windward side, at a lower end edge of the cold storage material enclosure portion of the cold storage material container Is provided, and the lower end is inclined to the windward side from the upper side to the lower side at the lower part of the condensate drainage groove opened in the first inclined part provided at the lower end edge of the cold storage material enclosure part of the cold storage material container The evaporator with a cool storage function according to claim 1, wherein the inclined groove portion is provided. The first inclined portion is provided on the windward side, the second inclined portion is provided on the leeward side, and the leeward side end portion of the first inclined portion and the windward side end portion of the second inclined portion are continuous. Evaporator with cold storage function described. The first inclined portion is provided on the leeward side, the second inclined portion is provided on the leeward side, and the windward side end portion of the first inclined portion and the leeward side end portion of the second inclined portion are continuous. Evaporator with cold storage function described. In the heat exchange core part, a plurality of pipe sets each including two refrigerant flow pipes arranged at intervals in the ventilation direction are arranged at intervals in the left-right direction, so that the pipe sets adjacent to each other in the left-right direction are arranged. The evaporator with a cool storage function according to claim 4 or 5, wherein a gap is formed between the two refrigerant flow pipes arranged in the ventilation direction, wherein a connecting portion between the first inclined portion and the second inclined portion is located. The cool storage material container is composed of two metal container constituent plates in which peripheral strips having a certain width are joined to each other, and the portions excluding the joined strips in both container constituent plates swell outward. The regenerator material enclosing part is provided by being put out, and the joint part consisting of the band-shaped part of the container constituting plate is located in the middle part of the thickness direction of the regenerator material enclosing part, and the inclined part of the lower end edge of the regenerator material enclosing part The inclined joint part which consists of the strip | belt-shaped part mutually joined of both the container structural plates and inclined in the same direction as the inclined part of the cool storage material enclosure part below is provided. Evaporator with cold storage function described.

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