JP5674388B2 - Evaporator with cool storage function - Google Patents

Description

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

  In this specification and the claims, the top and bottom of FIGS. 1 and 2 are the top and bottom.

  In recent years, automobiles have been proposed that automatically stop the engine when the vehicle stops, such as when waiting for a signal, for the purpose of environmental protection or improvement in automobile fuel efficiency.

  By the way, 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 is not supplied to the evaporator, and the cooling capacity is rapidly reduced.

  Therefore, in order to solve such a problem, the evaporator is provided with a cold storage function, and when the engine stops and the compressor stops, the interior of the vehicle can be cooled using the cold energy stored in the evaporator. It is considered.

  As an evaporator with a cold storage function, a set of two flat refrigerant flow pipes that are oriented in the width direction in the ventilation direction and spaced apart in the ventilation direction is spaced in a direction perpendicular to the width direction of the refrigerant flow pipe. A flat cold storage container in which a plurality of two refrigerant distribution pipes are arranged and one side of each pair of refrigerant distribution pipes is directed in the width direction in the ventilation direction and the cold storage material is enclosed therein is adjacent to the ventilation direction. A set of refrigerant flow pipes arranged in straddling pipes, brazed to the refrigerant flow pipes, and having the same size in the thickness direction of the regenerator container, and arranged in the ventilation direction. A combination of cool storage material containers brazed to each other is arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow pipe, and a gap between adjacent combinations is provided as a ventilation gap. Those fins are arranged are brazed to the vessel refrigerant tubes and regenerator material has been proposed (see Patent Document 1).

  According to the evaporator with a cold storage function described in Patent Document 1, cold heat is stored in the cold storage material in the cold storage material container by the low-temperature refrigerant flowing through the refrigerant circulation pipe.

  However, in the evaporator with a cool storage function described in Patent Document 1, if the amount of the cool storage material enclosed in the cool storage material container is increased for the purpose of improving the cool storage performance, the length of the cool storage material container and the refrigerant distribution pipe is increased. In addition, it is necessary to increase the overall container height, which is the dimension in the thickness direction of the cold storage material container. However, if the lengths of the cold storage material container and the refrigerant circulation pipe are increased, there is a problem that the heat exchange core portion of the evaporator is enlarged, the weight is increased, and the space saving property is impaired. In addition, if the container height of the cold storage material container is increased as a whole, it takes time to cool the cold storage material, so that the cool-down performance from the start of the cooling operation is deteriorated. In addition, if the container height of the cool storage material container is increased without changing the dimensions of the heat exchange core part of the evaporator with the cool storage function, the ventilation area of the ventilation gap decreases, the ventilation resistance increases, and the cooling performance as an evaporator decreases. To do.

Japanese Patent No. 4043776

  The object of the present invention is to solve the above-mentioned problem, to achieve a reduction in size and weight as compared with the evaporator with a cool storage function described in Patent Document 1, and to cool the cool storage material efficiently, and to provide ventilation resistance. It is in providing the evaporator with a cool storage function which can suppress a raise of an.

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

1) A plurality of flat refrigerant flow pipes that extend in the vertical direction and whose width direction faces the ventilation direction are arranged in parallel with a space between each other, and extend in the vertical direction on one side of the refrigerant flow pipe and in the width direction. An evaporator with a cold storage function in which a flat cold storage material container in which a cold storage material is sealed is arranged and is in thermal contact with the refrigerant flow pipe,
A cold storage material container is provided so as to be connected to the container main body part thermally contacted with the refrigerant flow pipe, the windward side or the leeward side of the container main body part, and to protrude outward in the ventilation direction from the refrigerant flow pipe; and An inner volume increasing portion in which the dimension in the thickness direction is larger than the dimension in the thickness direction of the container main body, and an inner fin extending from the container main body to the inner volume increasing portion is disposed in the cold storage material container , The refrigerant circulation pipe and the cold storage material container are formed separately, and the container main body portion of the cold storage material container is brazed to the refrigerant flow pipe, and has the container main body portion brazed to the refrigerant flow pipe and the refrigerant flow pipe. The combination body composed of the cold storage material containers is arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow pipe, the adjacent combination bodies are made into a ventilation gap, and the outer fin is arranged in the ventilation gap. Cool storage function of the internal volume increasing portion-side portion of the cold storage container in the outer fins are protruded in the air outward of the refrigerant flow tubes, the outer fins are brazed on both sides of the internal volume increasing portion of the cold storage container With evaporator.

  2) The evaporator with a cool storage function according to the above 1), wherein the insides of the plurality of cool storage material containers are communicated with each other in the internal volume increasing portion.

  3) The evaporator with a cool storage function as described in 2) above, wherein the interior of all the cool storage material containers is communicated.

  4) The inner fin has a corrugated shape, and includes any one of the above 1) to 3) comprising a wave crest extending in the ventilation direction, a wave bottom extending in the ventilation direction, and a connecting portion connecting the wave crest and the wave bottom. Evaporator with cold storage function described.

  5) The inner fin is offset, and a plurality of corrugated strips having a wave crest extending in the ventilation direction, a wave bottom extending in the ventilation direction, and a connecting portion connecting the wave crest and the wave bottom are arranged in the ventilation direction. Any one of the above 1) to 3) in which the wave crests and wave crests of two strips adjacent to each other in the ventilation direction are displaced in the vertical direction. Evaporator with cold storage function described.

  6) The above 4) or 5), wherein the fin height of the inner fin is the same throughout, and is equal to the internal height of the container body portion of the cold storage material container and lower than the internal height of the internal volume increasing portion. Evaporator with cold storage function.

7) A plurality of the refrigerant circulation pipes of each combination are arranged at intervals in the ventilation direction, and the container main body portion of the regenerator container of the combination is arranged so as to straddle all the refrigerant circulation pipes of the combination. The evaporator with a cold storage function according to any one of 1) to 6), wherein the evaporator is brazed to the refrigerant flow pipe.

8) The leeward portion of the cool storage material container is protruded outward in the ventilation direction from the refrigerant circulation pipe portion, and the internal volume increasing portion is provided in the portion of the cool storage material container protruding outward from the refrigerant circulation tube portion in the ventilation direction. The evaporator with a cold storage function according to any one of 1) to 7) above.

According to the evaporator with a cold storage function of the above 1) to 8), the cold storage material container is connected to the container main body part that is in thermal contact with the refrigerant flow pipe, and to the windward side or leeward side of the container main body part, and the refrigerant flow An internal volume increasing portion provided so as to protrude outward from the pipe in the ventilation direction and having a thickness-direction dimension larger than a thickness direction dimension of the container main body, and the container in the regenerator container Since the inner fin extending from the main body part to the internal volume increasing part is arranged, as in the evaporator with a cold storage function described in Patent Document 1, the refrigerant circulation pipe and the cold storage material container are lengthened, The amount of the regenerator material enclosed in the regenerator material container can be increased without increasing the overall container height, which is a dimension in the thickness direction. Therefore, compared with the evaporator with a cool storage function of patent document 1 whose container height of the cool storage material container is the same as the whole, size reduction and weight reduction can be achieved. Moreover, in the evaporator with a cool storage function described in Patent Document 1 in which the container height of the cool storage material container is the same as a whole, the time required for cooling the cool storage material is shortened as compared with the case where the container height is increased. This makes it possible to suppress a decrease in cool-down performance from the start of cooling operation. And since the inner fin from the container main-body part to an internal volume increase part is arrange | positioned in the cool storage material container, the cool storage material in an internal volume increase part will also be cooled rapidly. Therefore, the cool storage material in the cool storage material container can be efficiently cooled.

  Further, since the internal volume increasing portion is connected to the windward side or the leeward side of the container main body portion and is provided so as to protrude outward in the ventilation direction from the refrigerant circulation pipe, as in the evaporator with the cold storage function of the above 7) The refrigerant circulation pipe and the combination of the cool storage material containers having the container main body part thermally brought into contact with the refrigerant circulation pipe are arranged at intervals in a direction perpendicular to the width direction of the refrigerant circulation pipe. Even when the space between the combined bodies is a ventilation gap, the amount of the cool storage material enclosed in the cool storage material container can be increased without changing the dimensions of the heat exchange core portion. Therefore, compared with the evaporator with a cool storage function described in Patent Document 1, it is possible to suppress a decrease in the area of the ventilation gap, and it is possible to suppress an increase in ventilation resistance, thereby preventing a decrease in cooling performance. be able to.

According to the evaporator with a cold storage function of 1) above, the combined body consisting of the refrigerant circulation pipe and the cold storage material container having the container main body brazed to the refrigerant circulation pipe is in a direction perpendicular to the width direction of the refrigerant circulation pipe. Arranged at intervals, the space between adjacent combinations is a ventilation gap, outer fins are arranged in the ventilation gap, and the portion of the outer fin on the inner volume increasing portion side of the cold storage material container is more than the refrigerant circulation pipe Since the outer fins are projected outward and the outer fins are brazed on both sides of the inner volume increasing portion of the cool storage material container, when the engine stops and the compressor stops, the cool storage in the inner volume increase portion of the cool storage material container Since the cold heat of the material is transmitted from the both side surfaces of the inner volume increasing portion to the air passing through the ventilation gap via the fins brazed to the both side surfaces of the inner volume increasing portion, the cooling performance is improved .

  According to the evaporator with a cool storage function of 2) above, the cool storage material filling port is formed in the internal volume increasing portion of any one of the plurality of cool storage material containers communicated with each other. By forming an air vent in the increased internal volume portion of one of the cool storage material containers, it is easy to enclose the cool storage material in the cool storage material container with which the interior communicates.

According to the evaporator with a cold storage function of 4) to 6) above, when the cold storage material is filled into the cold storage material container from the internal volume increase portion, the cold storage material that has entered the internal volume increase portion of the cold storage material container is the inner fin. Since the container main body portion is reached through the portion between the adjacent connecting portions, the refrigerating material filling operation can be easily performed.

According to the evaporator with a cool storage function of 8) above, since the internal volume increasing portion is provided on the leeward side of the container main body, a large amount of cool storage is provided in the portion where the temperature of the air flowing through the ventilation gap is low. There will be an internal volume increase where the material is placed. Therefore, the cool storage material in the cool storage material container can be efficiently cooled, and the cool storage performance is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway perspective view showing an overall configuration of an evaporator with a cold storage function of the present invention. It is the AA line expanded sectional view which abbreviate | omitted a part of FIG. FIG. 3 is an enlarged sectional view taken along line B-B in FIG. 2. FIG. 3 is an enlarged sectional view taken along the line CC in FIG. 2. It is a perspective view which shows the some cool storage material container integrated. It is a disassembled perspective view which shows one cool storage material container. It is a disassembled perspective view equivalent to FIG. 6 which shows the modification of a cool storage material container.

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

  In the following description, the downstream side in the ventilation direction (the direction indicated by the arrow X in FIGS. 1 to 4) is the front, and the opposite side is the rear. Further, the left and right when viewing the rear from the front, that is, the left and right in FIG.

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

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

  In FIG. 1 and FIG. 2, the evaporator with a cold storage function (1) includes an aluminum first header tank (2) and an aluminum second header tank (3) extending in the horizontal direction and spaced apart in the vertical direction. And a heat exchange core portion (4) provided between the header tanks (2) and (3).

  The first header tank (2) is integrated with the refrigerant inlet header (5) located on the front side (downstream in the ventilation direction) and the refrigerant inlet header (5) located on the rear side (upstream in the ventilation direction). And a refrigerant outlet header portion (6). A refrigerant inlet (7) is provided at the right end of the refrigerant inlet header (5), and a refrigerant outlet (8) is provided at the right end of the refrigerant outlet header (6). The second header tank (3) includes a first intermediate header portion (9) located on the front side and a second intermediate header portion (11) located on the rear side and integrated with the first intermediate header portion (9). And. The first intermediate header portion (9) and the second intermediate header portion (11) of the second header tank (3) are brazed across the right end portions of the intermediate header portions (9) and (11). And it is made to communicate through the communicating member (12) whose inside became a passage.

  As shown in FIGS. 1 to 4, the heat exchange core portion (4) has a plurality of, in this case, two, extending in the vertical direction and oriented in the width direction in the front-rear direction and spaced in the front-rear direction. A plurality of sets (14) of flat refrigerant flow pipes (13) made of extruded aluminum material are arranged at intervals in the left-right direction (direction perpendicular to the width direction of the refrigerant flow pipe (13)), One side of the set (14) consisting of two refrigerant flow pipes (13), in this case the left side, extends in the vertical direction and the width direction in the front-rear direction, and a regenerator (not shown) is enclosed inside. An aluminum flat cold storage container (15) is disposed so as to straddle the two refrigerant flow pipes (13) of each set (14).

  The upper end of the front refrigerant flow pipe (13) is connected to the refrigerant inlet header (5), and the lower end is connected to the first intermediate header (9). The upper end of the rear refrigerant flow pipe (13) is connected to the refrigerant outlet header (6), and the lower end is connected to the second intermediate header (11). Each set (14) composed of two refrigerant flow pipes (13) arranged in the front-rear direction and the cold storage container (15) disposed across the two refrigerant flow pipes (13) of each set (14) A plurality of combinations (16) are configured. The combination body (16) is arranged in the left-right direction with an interval between adjacent combination bodies (16) serving as a ventilation gap (17), and an aluminum outer fin in the ventilation gap (17). (18) is arranged and brazed to the refrigerant flow pipe (13) and the cold storage material container (15). Aluminum outer fins (18) are also arranged on the outer sides of the combination body (16) consisting of the refrigerant flow pipe (13) and the cold storage material container (15) of each set (14), and the right end The outer fin (18) is brazed across both the front and rear refrigerant flow pipes (13), and the leftmost outer fin (18) is brazed to the cold storage material container (15). The outer fin (18) has a corrugated shape composed of a wave crest extending in the front-rear direction, a wave bottom extending in the front-rear direction, and a connecting portion connecting the wave crest and the wave bottom. Aluminum side plates (19) are placed outside the outer fins (18) at the left and right ends and brazed to the outer fins (18), and the combination of the side plate (19) and the left and right ends (16) A ventilation gap (17) is also provided between the two.

  As shown in FIGS. 2 to 5, the regenerator container (15) is located behind the front side edges of the refrigerant inlet header (5) and the first intermediate header (9), and each set (14). The container main body part (21) brazed to the refrigerant flow pipes (13) before and after the pipe, the front edge of the container main body part (21), the refrigerant inlet header part (5), and the first intermediate header part (9) The inner volume increasing portion (22) is provided so as to protrude forward from the front edge of the container, and the dimension in the thickness direction (left and right direction) is higher than the dimension in the thickness direction (left and right direction) of the container body (21). ). The dimensions in the left-right direction of the container body (21) are the same as the whole. The dimension of the inner volume increasing part (22) in the left-right direction is equal to the pipe height which is the dimension in the thickness direction (left-right direction) of the refrigerant flow pipe (13), and the container main body part (21) of the regenerator container (15). It is equal to the height with the dimension in the thickness direction added. The inner volume increasing portion (22) bulges only to the right with respect to the container main body portion (21), and the left side surfaces of the container main body portion (21) and the inner volume increasing portion (22) are flush with each other.

  Inside the cool storage material container (15), aluminum inner fins (23) extending from the rear edge of the container body (21) to the front end of the internal volume increasing part (22) are arranged over substantially the entire vertical direction. Has been. The inner fin (23) includes a wave crest portion (23a) extending in the front-rear direction, a wave bottom portion (23b) extending in the front-rear direction, and a connecting portion (23c) connecting the wave crest portion (23a) and the wave bottom portion (23b). Corrugated. The fin height of the inner fin (23) is the same as the whole, the inner surface of the left side wall of the container body (21) and the inner volume increasing part (22) of the cold storage material container (15), and the right side wall of the container body (21) It is brazed to the inner surface.

  The upper and lower end portions of the internal volume increasing portion (22) of the cold storage material container (15) protrude outward in the vertical direction from the container main body portion (21), and the protruding portion bulges outward in the left-right direction. A protruding tank forming part (25) is provided. The tank forming portions (25) of the inner volume increasing portions (22) of the adjacent cool storage material containers (15) are brazed to each other, thereby integrating all the cool storage material containers (15). Further, the inside of the tank forming portion (25) of the inner volume increasing portion (22) of the adjacent cool storage material container (15) has a communication hole (26) formed in the bulging end wall of the tank forming portion (25). Is communicated through. Then, upper and lower communication tanks (27) are formed by the upper and lower tank forming portions (25) of the inner volume increasing portions (22) of all the cool storage material containers (15), and all the cool storage material containers (15) The inside communicates with the upper and lower communication tanks (27). Although not shown, a regenerator filling port is formed in one of the upper and lower communication tanks (27), and an air vent is formed in the other, and all the regenerator containers are formed through the regenerator filling port. It is preferable that the cold storage material is filled in (15). In this case, the cool storage material first enters the inner volume increasing portion (22) of the cool storage material container (15), passes between adjacent connecting portions (23c) of the inner fin (23), and the container main body portion (21). Get inside. The cool storage material filling port and the air vent port are closed by appropriate means after the cool storage material container (15) is filled with the cool storage material. As the cold storage material filled in the cold storage material container (15), for example, a water-based, paraffin-based or the like whose freezing point is adjusted to about 3 to 10 ° C is used. Further, the amount of the regenerator material filled in the regenerator material container (15) is preferably an amount that fills the entire regenerator material container (15) up to the upper end.

  As shown in FIG. 6, the cool storage material container (15) is composed of two substantially vertical rectangular aluminum plates (28) and (29) whose peripheral portions are brazed to each other. All the aluminum plates (28) and (29) are made of an aluminum brazing sheet having a brazing filler metal layer on both sides, and the outer shapes viewed from both the left and right sides are the same. The left aluminum plate (28) constituting the cool storage material container (15) occupies most of the portion excluding the front side portion, and forms a first bulge portion for forming the container body portion (21) bulged to the left ( 31) and an inner volume increasing portion (22) for forming the inner volume increasing portion (22) which is connected to the front side of the first bulging portion (31) and bulges to the left and has the same bulging height as the first bulging portion (31). Two bulges (32) and tanks provided at both upper and lower ends of the second bulge (32) and bulging to the left and having a higher bulge than the second bulge (32) And a third bulging portion (33) for forming the portion (25). A communication hole (26) is formed in the bulging end wall of the third bulging portion (33) in the left aluminum plate (28) constituting the cold storage material container (15) excluding the leftmost cold storage material container (15). Yes.

  The right aluminum plate (29) constituting the regenerator container (15) includes a flat part (34) for forming the container body part (21) occupying most of the front part excluding the front part, and the front side of the flat part (34). And a first bulging portion (35) for forming an internal volume increasing portion (22) that bulges to the right and bulges to the right by being provided at both upper and lower ends of the first bulging portion (35). And a second bulging portion (36) for forming a tank forming portion (25) having a bulging height higher than that of the first bulging portion (35). A communication hole (26) is formed in the bulging end wall of the second bulging portion (36) in the right aluminum plate (29) constituting the cold storage material container (15) excluding the rightmost cold storage material container (15). Yes.

  Then, the two swelled aluminum plates (28) and (29) are arranged so that the openings of the bulging portions (32), (35) and (33) and (36) face each other, and the first bulging portion is formed by the flat portion (34). The cold storage material container (15) is formed by brazing so as to close the opening of (31). The tank forming parts (25) of two adjacent cool storage material containers (15) are mutually connected so that the communication holes (26) of the third bulging part (33) and the second bulging part (36) communicate with each other. It is brazed.

  The front side portion of the outer fin (18) protrudes forward from the front refrigerant flow tube (13), and the outer fin (18) has a portion protruding forward from the front refrigerant flow tube (13). The left and right side surfaces of the internal volume increasing portion (22) of the cool storage material container (15) located on both the left and right sides are brazed.

  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 has an evaporator with a cold storage function ( The refrigerant enters the refrigerant inlet header part (5) of 1) and flows into the first intermediate header part (9) through the front all refrigerant circulation pipe (13). The refrigerant that has entered the first intermediate header portion (9) passes through the communication member (12), enters the second intermediate header portion (11), and then passes through the rear refrigerant flow pipe (13). It flows into the outlet header (6) and flows out from the refrigerant outlet (8). Then, while the refrigerant flows through the refrigerant flow pipe (13), heat exchange is performed with the air passing through the ventilation gap (17), and the refrigerant flows out as a gas phase.

  At this time, the cool storage material in the container main body (21) of the cool storage material container (15) is cooled by the refrigerant flowing in the refrigerant flow pipe (13), and further, the cooled cool storage material in the container main body (21) is cooled. The cold heat is transmitted to the cool storage material in the internal volume increasing portion (22) of the cool storage material container (15) through the inner fin (23), and is stored by the air cooled by the refrigerant through the ventilation gap (17). The cold storage material in the internal volume increasing portion (22) of the material container (15) is cooled, and as a result, cold heat is stored in the entire cold storage material in the cold storage material container (15).

  When the compressor is stopped, the cold heat of the cold storage material in the container main body (21) and the internal volume increasing portion (22) of the cold storage material container (15) is transferred to the container main body through the inner fin (23). (21) and the inner volume increasing portion (22) are transmitted to the left side wall and further pass through the ventilation gap (17) via the outer fin (18) brazed to the left side surface of the cold storage material container (15). It is transmitted to the air. In addition, the cold heat of the cool storage material in the container body (21) of the cool storage material container (15) is transmitted to the right side wall of the container body (21) via the inner fin (23), and the container body ( 21) is transmitted to the air passing through the ventilation gap (17) through the refrigerant circulation pipe (13) and the outer fin (18) brazed to the refrigerant circulation pipe (13). Furthermore, the cold heat of the regenerator material in the inner volume increasing part (22) of the cooler material container (15) is brazed from the right side surface of the inner volume increasing part (22) to the right side surface of the inner volume increasing part (22). It is transmitted to the air passing through the ventilation gap (17) through the outer fin (18). 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 above embodiment, the refrigerant flow pipe of the evaporator with a cold storage function is formed in a flat hollow body formed by brazing the peripheral portions with two aluminum plates facing each other, as in the case of a so-called laminated evaporator. It may be provided. That is, it may be formed in a bulging shape between both aluminum plates constituting the flat hollow body.

  FIG. 7 shows a modification of the cool storage material container.

  In the case of the regenerator material container (40) shown in FIG. 7, the inside thereof has an offset aluminum inner fin (41) extending from the rear end portion of the container main body portion (21) to the front end portion of the internal volume increasing portion (22). ) Are arranged over substantially the entire vertical direction. The inner fin (41) includes a wave crest portion (42a) extending in the front-rear direction (ventilation direction), a wave bottom portion (42b) extending in the front-rear direction, and a connecting portion that connects the wave crest portion (42a) and the wave bottom portion (42b) ( 42c) is formed by arranging a plurality of corrugated strips (42) in the ventilation direction and integrally connected to each other, and the wave crests of two strips (42) adjacent in the front-rear direction (42a) and the wave bottom portions (42b) are displaced in the vertical direction.

  Other configurations are the same as those of the cold storage material container (15) of the above-described embodiment.

  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
(13): Refrigerant distribution pipe
(15) (40): Cold storage container
(16): Combination of refrigerant distribution pipe and cold storage container
(17): Ventilation gap
(18): Outer fin
(21): Container body
(22): Internal volume increasing part
(23) (41): Inner fin
(23a): Wave peak
(23b): Wave bottom
(23c): Connection part
(42): Wavy strip
(42a): Wave peak
(42b): Wave bottom
(42c): Connection part

Claims (8)

A plurality of flat refrigerant flow pipes that extend in the vertical direction and whose width direction faces the ventilation direction are arranged in parallel at intervals from each other, and extend in the vertical direction and ventilate in the width direction on one side of the refrigerant flow pipe. An evaporator with a cold storage function, in which a flat cold storage material container in which a cold storage material is sealed is disposed and is in thermal contact with the refrigerant flow pipe,
A cold storage material container is provided so as to be connected to the container main body part thermally contacted with the refrigerant flow pipe, the windward side or the leeward side of the container main body part, and to protrude outward in the ventilation direction from the refrigerant flow pipe; and An inner volume increasing portion in which the dimension in the thickness direction is larger than the dimension in the thickness direction of the container main body, and an inner fin extending from the container main body to the inner volume increasing portion is disposed in the cold storage material container , The refrigerant circulation pipe and the cold storage material container are formed separately, and the container main body portion of the cold storage material container is brazed to the refrigerant flow pipe, and has the container main body portion brazed to the refrigerant flow pipe and the refrigerant flow pipe. The combination body composed of the cold storage material containers is arranged at intervals in a direction perpendicular to the width direction of the refrigerant flow pipe, the adjacent combination bodies are made into a ventilation gap, and the outer fin is arranged in the ventilation gap. Cool storage function of the internal volume increasing portion-side portion of the cold storage container in the outer fins are protruded in the air outward of the refrigerant flow tubes, the outer fins are brazed on both sides of the internal volume increasing portion of the cold storage container With evaporator. The evaporator with a cool storage function according to claim 1, wherein the interiors of the plurality of cool storage material containers are communicated with each other in the internal volume increasing portion. The evaporator with a cool storage function according to claim 2, wherein the inside of all the cool storage material containers is communicated. The cold storage according to any one of claims 1 to 3, wherein the inner fin has a corrugated shape, and includes a wave crest extending in the ventilation direction, a wave bottom extending in the ventilation direction, and a connecting portion that connects the wave crest and the wave bottom. Evaporator with function. The inner fin has an offset shape, a wave crest extending in the ventilation direction, a wave bottom extending in the ventilation direction, and a plurality of wavy strips connecting the wave crest and the wave bottom are arranged in the ventilation direction and mutually The cold storage according to any one of claims 1 to 3, wherein the crest portions and the crest portions of two strips that are formed by being integrally connected and adjacent to each other in the ventilation direction are displaced in the vertical direction. Evaporator with function. The cold storage function according to claim 4 or 5, wherein the fin height of the inner fin is the same throughout, and is equal to the internal height of the container main body portion of the cold storage material container and lower than the internal height of the internal volume increasing portion. With evaporator. A plurality of the refrigerant circulation pipes of each combination are arranged at intervals in the ventilation direction, and the container main body of the cold storage material container of the combination is arranged so as to straddle all the refrigerant circulation pipes of the combination. The evaporator with a cool storage function according to any one of claims 1 to 6, wherein the evaporator is brazed to the distribution pipe . The leeward side portion of the cool storage material container is protruded outward in the ventilation direction from the refrigerant flow pipe portion, and the internal volume increasing portion is provided in the portion of the cool storage material container protruding outward from the refrigerant flow tube portion in the ventilation direction. The evaporator with a cool storage function in any one of claim | item 1 -7.

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