JP5470385B2 - 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 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 pair of refrigerant header portions arranged at intervals from each other, and a gap between the refrigerant header portions and the refrigerant header portion are directed in the width direction and in the length direction of the refrigerant header portion. And a plurality of flat refrigerant flow pipes whose both ends are respectively connected to both refrigerant header parts, and arranged in the width direction in the direction of ventilation and fixed to one side of the refrigerant flow pipe And a hollow regenerator container in which a regenerator material is enclosed, and a plurality of sets of refrigerant circulation pipes and a regenerator container are formed in which the dimensions in the thickness direction of the regenerator container are equal throughout. Are arranged at intervals, and a portion between adjacent sets of the refrigerant circulation pipe and the cool storage material container is formed as a ventilation gap, and fins are arranged in the ventilation gap to join the refrigerant circulation pipe and the cold storage material container. The And those which have 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 the cool storage function described in Patent Document 1, when the air passes through the ventilation gap of the evaporator, high-temperature air hits the portion facing the windward side of the cool storage material container. There was a problem that the cold storage material present on the upper side could not be sufficiently cooled, resulting in a decrease in the overall cold storage efficiency.

JP 2002-274165 A

  The objective of this invention is providing the evaporator with a cool storage function which can solve the said problem and can prevent the fall of cool storage efficiency.

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

1) The flat first refrigerant flow pipe portions arranged in the ventilation direction and spaced apart from each other in the width direction, and the leeward side of the first refrigerant flow pipe portion, directed in the width direction and spaced from each other At least one of the second refrigerant flow pipe portions between the two adjacent second refrigerant flow pipe portions that are oriented in the width direction and are adjacent to each other. A flat regenerator material enclosing tube portion disposed so as to be in contact with and encapsulated with a regenerator material ,
The space between the adjacent ones of the first refrigerant flow pipe portions becomes the windward ventilation gap, and the regenerator material enclosing pipe portion is brought into contact with either one of the two adjacent second refrigerant flow pipe portions, and the second The leeward side ventilation gaps are formed between the adjacent sets of the refrigerant storage pipe part and the cold storage material enclosing pipe part brought into contact with the second refrigerant circulation pipe part, and the first fins are provided in all the windward side ventilation gaps. Are arranged, and second fins formed separately from the first fins are arranged in all the leeward side ventilation gaps, and the thickness of the first refrigerant flow pipe portion and the thickness of the second refrigerant flow pipe portion. And the fin height, which is the dimension in the thickness direction of both refrigerant flow pipe portions in the second fin, is smaller than the fin height, which is the dimension in the thickness direction of both refrigerant flow pipe portions in the first fin. , Windward side of the regenerator material tube Parts and the upwind-side end of the second fin, the second with projecting upwind than the refrigerant circulation pipe unit, windward passing clearances leeward side enters in which the evaporator with a cool storage function to the part of the.

2) The flat first refrigerant flow pipe portions arranged in the width direction in the ventilation direction and spaced apart from each other and the leeward side of the first refrigerant flow pipe portion in the width direction in the ventilation direction and spaced from each other At least one of the second refrigerant flow pipe portions between the two adjacent second refrigerant flow pipe portions that are oriented in the width direction and are adjacent to each other. A flat regenerator material enclosing tube portion disposed so as to be in contact with and encapsulated with a regenerator material,
Between the adjacent ones of the first refrigerant circulation pipe part is a windward ventilation gap, between the adjacent ones of the second refrigerant circulation pipe part is a leeward ventilation gap, and fins are arranged in the windward ventilation gap. An evaporator with a cold storage function in which a cold storage material-enclosed pipe portion in which a cold storage material is sealed is disposed in at least a part of all the leeward side ventilation gaps and is brought into contact with the second refrigerant flow pipe portions on both sides.

3) The thickness of the regenerator material enclosing tube portion is equal to the width of the leeward side ventilation gap, and the regenerator material enclosing tube portion is arranged in some of the leeward side ventilation gaps in some of the leeward side ventilation gaps. The evaporator with a cold storage function according to 2) above, wherein fins are arranged in the remaining leeward ventilation gap.

4) A protruding portion protruding outward is formed on at least one side surface of both side surfaces of the regenerator material enclosing tube portion, and the protruding end portion of the protruding portion is brought into contact with the second refrigerant circulation tube portion. The evaporator with a cool storage function according to 3) above, wherein a ventilation gap is formed between the cool storage material enclosing tube portion and the second refrigerant circulation tube portion.

5) The thickness of the regenerator material enclosing tube portion is equal to the width of the leeward side ventilation gap, the regenerator material enclosing tube portion is disposed in the entire leeward side airflow gap, and at least of both sides of the regenerator material enclosing tube portion A plurality of convex portions projecting outward are formed on one side surface, and the projecting end portion of the convex portion is brought into contact with the second refrigerant flow tube portion, whereby the cold storage material enclosing tube portion and the second refrigerant flow tube. The evaporator with a cold storage function according to 2) above, wherein a ventilation gap is formed between the first and second portions.

6) The evaporator with a cool storage function according to any one of the above 1) to 5) , wherein the first coolant circulation pipe part, the second coolant circulation pipe part, and the cool storage material enclosing pipe part are separately formed.

According to the evaporator with a cold storage function of the above 1) to 6) , the flat first refrigerant circulation pipe portion that is oriented in the width direction in the air flow direction and spaced from each other, and the lee of the first refrigerant circulation pipe portion On the side, between the two second refrigerant flow pipe portions that are flat and oriented in the ventilation direction and spaced apart from each other, and between the two second refrigerant flow pipe portions that are adjacent to each other in the width direction. In addition, when the air passes through the evaporator, it is arranged so as to be in contact with at least one of the second refrigerant flow pipe parts and is provided with a flat cold storage material enclosing pipe part in which the regenerator material is enclosed. Hot air is not directly applied to the regenerator material tube. Therefore, the regenerator material in the regenerator material enclosing tube portion is prevented from being heated by high-temperature air, and it is possible to prevent a decrease in the regenerator efficiency. And since it becomes possible to prevent the fall of cool storage efficiency, it becomes possible to reduce the quantity of the cool storage material enclosed in the cool storage material enclosure pipe part, and can achieve weight reduction. And since it becomes possible to reduce the quantity of a cool storage material, the thickness of a cool storage material enclosure pipe part can be made thin, and the space | interval between adjacent 1st refrigerant | coolant circulation pipe parts and 2nd refrigerant | coolant circulation pipe parts is obtained. it is possible to increase, it is possible to reduce the ventilation resistance.

According to the evaporator with a cold storage function of the above 4) and 5) , the wind passing through the windward ventilation gap passes through the ventilation gap formed between the cold storage material enclosing pipe part and the second refrigerant circulation pipe part. It will flow, and an increase in ventilation resistance can be controlled.

It is a perspective view which shows the whole structure of the evaporator with a cool storage function of Embodiment 1 of this invention. It is the vertical sectional view which looked at the front from the back of the evaporator with a cool storage function of Drawing 1. 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. FIG. 3 is an enlarged cross-sectional view taken along the line CC in which a part of FIG. 2 is omitted. It is a disassembled perspective view which shows most flat hollow bodies which comprise the evaporator with a cool storage function of FIG. It is a disassembled perspective view which shows a part of flat hollow body which comprises the evaporator with a cool storage function of FIG. It is a figure which shows how the refrigerant | coolant flows in the evaporator with a cool storage function of FIG. It is a disassembled perspective view which shows the modification of most flat hollow bodies which comprise the evaporator with a cool storage function of FIG. It is sectional drawing equivalent to FIG. 4 which shows the evaporator with a cool storage function of Embodiment 2 of this invention. It is a disassembled perspective view which shows most flat hollow bodies which comprise the evaporator with a cool storage function of FIG. It is a perspective view which shows the whole structure of the evaporator with a cool storage function of Embodiment 3 of this invention. It is the DD sectional view taken on the line of FIG. It is sectional drawing equivalent to FIG. 13 which shows the evaporator with a cool storage function of Embodiment 4 of this invention. It is sectional drawing equivalent to FIG. 13 which shows the evaporator with a cool storage function of Embodiment 5 of this invention. It is a perspective view which shows the cool storage material enclosure pipe | tube part of the evaporator with a cool storage function of FIG.

(1): Evaporator with cool storage function
(2): First refrigerant distribution pipe
(3): Second refrigerant distribution pipe
(4): Regenerative material enclosure tube (first regenerator enclosure tube)
(5): First communication tank for refrigerant
(6): Second communication tank for refrigerant
(7): Communication tank for cold storage
(8) (40) (51): Flat hollow body
(9): A set consisting of a second refrigerant flow pipe section and a cold storage material enclosing pipe section
(10A): Windward draft clearance
(10B): Downward ventilation gap
(11): Outer fin
(17): 1st tank formation part
(18): Second tank forming part
(19): Third tank forming section
(50): Second regenerator material tube
(60): Evaporator with cool storage function
(71): First refrigerant circulation pipe (first refrigerant circulation pipe)
(72): Second refrigerant circulation pipe (second refrigerant circulation pipe)
(73) (80) (90): Cold storage material enclosing tube
(74A): Windward draft clearance
(74B) (74C): Downward ventilation gap
(75): A set consisting of a second refrigerant circulation pipe and a cold storage material enclosing pipe section
(76) (82): First outer fin
(77) (81): Second outer fin
(94): Convex
(95): Ventilation gap

  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, 3, 4, 8, 10, and 12 to 15) is the front, and the opposite side is the rear. To do.

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

  In addition, the same code | symbol is attached | subjected to the same part and the same thing through all drawings, and the overlapping description is abbreviate | omitted.

Embodiment 1
This embodiment is shown in FIGS. In the description of the first embodiment, it is assumed that the top, bottom, left and right in FIG.

  1 to 3 show the entire configuration of the evaporator with a cold storage function of the first embodiment, and FIGS. 4 to 7 show the configuration of the main part thereof. FIG. 8 shows how the refrigerant flows in the evaporator with the cold storage function of FIG.

  1 to 5, the evaporator (1) with a cold storage function is a flat first refrigerant flow that extends in the vertical direction with the width direction oriented in the front-rear direction (ventilation direction) and spaced from each other in the left-right direction. On the leeward side of the pipe part (2) and the first refrigerant flow pipe part (2), the flat second refrigerant extending in the vertical direction with the width direction directed in the front-rear direction and spaced apart from each other in the left-right direction. Arranged so that one side of the second refrigerant flow pipe part (3) is in contact between the flow pipe part (3) and the second refrigerant flow pipe part (3) adjacent to each other with the width direction directed in the air flow direction. And a flat regenerator material enclosing tube part (4) in which the regenerator material (P) is enclosed, and a first refrigerant flow tube part (2) provided in the up and down direction and spaced apart from each other. And a pair of upper and lower refrigerant first communication tanks (5) that are connected to both upper and lower ends of the upper and lower sides, A pair of upper and lower refrigerant second communication tank portions provided side by side on the front side of both refrigerant first communication tank portions (5) and having both upper and lower ends of the second refrigerant flow pipe portion (3) communicated with each other. (6) and the upper and lower sides spaced in the vertical direction and arranged side by side on the front side of the second communication tank portion (6) for both refrigerants, and the upper and lower ends of the regenerator material enclosing tube portion (4) communicated with each other And a pair of cold storage material communication tanks (7), and a plurality of flat hollow bodies (8) are arranged in a stacked manner in the left-right direction with the width direction in the front-rear direction and brazed to each other Is formed. The thickness of the first refrigerant flow pipe part (2) of the evaporator with the cold storage function, the second refrigerant flow pipe part (3), and the cold storage material enclosing pipe part (4) in contact with the second refrigerant flow pipe part (3) ) Is equal to the thickness of the group (9).

  The space between adjacent ones of the first refrigerant flow pipe part (2) of the evaporator (1) with the cold storage function becomes the windward ventilation gap (10A), and the second refrigerant flow pipe part (3) and the cold storage material enclosing pipe part ( The space between adjacent ones of the group (9) consisting of 4) is the leeward side ventilation gap (10B). From the first refrigerant circulation pipe part (2), the second refrigerant circulation pipe part (3) and the regenerator material enclosing pipe part (4) so as to straddle the windward ventilation gap (10A) and the leeward ventilation gap (10B). An aluminum corrugated outer fin (11) shared with the set (9) is arranged, and the first refrigerant flow pipe part (2), the second refrigerant flow pipe part (3) and the regenerator material are enclosed. It is brazed to the pipe (4). Also, a set comprising a first refrigerant flow pipe part (2) at both left and right ends of the evaporator (1) with a cold storage function, and a second refrigerant flow pipe part (3) and a cold storage material enclosing pipe part (4) at both right and left ends. Also on the outside of (9), it is made of aluminum that is shared by the first refrigerant circulation pipe part (2) and the group (9) consisting of the second refrigerant circulation pipe part (3) and the regenerator material enclosing pipe part (4). The corrugated outer fin (11) is disposed, and is brazed to the first refrigerant flow pipe part (2), the second refrigerant flow pipe part (3) and the regenerator material enclosing pipe part (4). Further, aluminum side plates (12) are disposed outside the outer fins (11) at both left and right ends and brazed to the outer fins (11). The fin height which is the dimension of the outer fin (11) in the left-right direction (thickness direction of both refrigerant flow pipe portions (2) and (3)) is equal to the whole. The fin height of the outer fin (11) is preferably 3.5 to 8 mm.

  The upper refrigerant first communication tank section (5) and the upper refrigerant second communication tank section (6) are respectively left and right by partition members (13) and (14) provided at the center in the left-right direction. It is divided into two sections (5a) (5b) (6a) (6b). A refrigerant inlet (15) is provided at the right end of the right compartment (6b) in the upper refrigerant second communication tank (6), and the right compartment (5b) of the upper refrigerant first communication tank (5) is provided. A refrigerant outlet (16) is provided at the right end. The left compartment (5a) of the upper refrigerant first communication tank section (5) and the left compartment (6a) of the upper refrigerant second communication tank section (6) are communicated via the communication passage (20). It has been. In addition, the internal cross-sectional area of the first communication tank part (5) for both the upper and lower refrigerants and the second communication tank part (6) for both the upper and lower refrigerants is larger than the internal cross-sectional area of the communication tank part (7) for both the upper and lower refrigerant storage materials. It is getting bigger. In addition, although illustration was abbreviate | omitted, the cool storage material injection port is formed in either one of the upper and lower both cool storage material communication tank parts (7), and the air vent at the time of cool storage material enclosure is formed in the other. The cool storage material inlet and the air vent are closed after the cool storage material is injected into the cool storage material sealing tube (4).

  As shown in FIG. 3 to FIG. 7, a bulging first refrigerant flow pipe portion (2) extending in the vertical direction is provided on the windward side portion (rear side portion) of the flat hollow body (8), Similarly, on the leeward side, a bulging second refrigerant flow pipe portion (3) extending in the vertical direction and a bulging cold storage material fixedly provided on the right side surface of the second refrigerant flow pipe portion (3). A set (9) comprising the enclosing tube portion (4) is provided. Further, at the upper and lower ends of the flat hollow body (8), a bulging first tank forming portion (17) for forming a refrigerant first communication tank portion (5), a refrigerant second communication tank portion (6 ) Forming a second tank forming portion (18) and a bulging third tank forming portion (19) forming a cold storage material communication tank portion (7). The width of the second tank forming section (18) in the front-rear direction is narrower than the width of the second refrigerant flow pipe section (3) in the front-rear direction, and excludes the portion near the front end of the second refrigerant flow pipe section (3). Is provided. The width in the front-rear direction of the third tank forming part (19) is narrower than the width in the front-rear direction of the second tank forming part (18). It is provided on the front side of the two tank forming section (18).

  The flat hollow body (8) includes an outer bulging part for the first pipe part (22) for forming the first refrigerant flow pipe part (2), and an outer bulging part for the first pipe part (22). For the second pipe portion for forming the first tank outer bulge portion (23), which is connected to the upper and lower ends and forms the upper and lower first tank forming portions (17), and the second refrigerant flow pipe portion (3) The second tank outer bulge part that is connected to the upper and lower ends of the outer bulge part (24) and the second pipe outer bulge part (24) and forms both upper and lower second tank forming parts (18) (25) and a first aluminum plate (21) having a third tank outward bulging portion (26) that forms both upper and lower third tank forming portions (19), and a first refrigerant flow pipe portion (2) The first pipe outer bulge part (22) and the first pipe outer bulge part (22) are connected to the upper and lower ends and form both upper and lower first tank forming parts (17). For the second tank forming the first tank outer bulging portion (23) and the upper and lower second tank forming portions (18) Outer bulge part (25), third bulge outer bulge part (28) and third bulge outer bulge part (28) for forming the regenerator material enclosing pipe part (4) A second aluminum plate (27) having a third tank outer bulge portion (26) which is connected to both upper and lower ends and forms upper and lower third tank forming portions (19), and an outer bulge portion (22 ) (23) (24) (25) (26) (28) are arranged in a stack so that the openings face each other, and an aluminum partition plate between the aluminum plates (21) (27) ( 29) is interposed and brazed to both aluminum plates (21) and (27).

  The bulge heights of the first bulge outer bulge portion (22) and the second bulge outer bulge portion (24) of the first aluminum plate (21) of the flat hollow body (8) are equal, The bulge heights of the first tank outer bulge portion (23), the second tank outer bulge portion (25) and the third tank outer bulge portion (26) are equal, It is higher than the bulge height of the outward bulge part (22) for the first pipe part and the outward bulge part (24) for the second pipe part. The first tank outer bulge portion (23) and the second tank outer bulge portion in the first aluminum plate (21) excluding the first aluminum plate (21) of the flat hollow body (8) at the left end. Communication holes (31), (32), and (33) are formed in the bulging top walls of (25) and the third tank outward bulging portion (26), respectively.

  The bulging heights of the outer bulging portion (22) for the first tube portion and the outer bulging portion (28) for the third tube portion of the second aluminum plate (27) of the flat hollow body (8) are equal, The bulge heights of the first tank outer bulge portion (23), the second tank outer bulge portion (25) and the third tank outer bulge portion (26) are equal, It is higher than the bulging height of the outward bulging portion (22) for the first tube portion and the outward bulging portion (28) for the third tube portion. The outer bulging portion (23) for the first tank and the outer bulge for the second tank of the second aluminum plate (27) excluding the second aluminum plate (27) of the flat hollow body (8) at the center in the left-right direction. Communication holes (31) and (32) are formed in the bulging top wall of the protruding portion (25). The top bulge of the first tank outer bulge portion (23) and the second tank outer bulge portion (25) in which the communication holes (31) and (32) are not formed in the second aluminum plate (27). Partition members (13) and (14) are formed by the walls. A communication hole is formed in the bulging top wall of the third tank outer bulging portion (26) of the second aluminum plate (27) excluding the second aluminum plate (27) of the flat hollow body (8) at the right end. 33) is formed.

  All of the first and second refrigerant flow pipe sections (2) and (3) leading to the left compartments (5a) and (6a) of the refrigerant first communication tank section (5) and the second refrigerant communication tank section (6) Of the flat hollow body (8), the first aluminum plate (21) and the second aluminum plate (27) of a plurality of flat hollow bodies (8) at appropriate positions excluding the flat hollow body (8) located at the left end. In the upper end portion, an outward bulging portion for forming a communication path that passes through the upper bulging portion (23) for the first upper tank and the outer bulging portion (25) for the second upper tank. (34) is formed. The bulging height of the outward bulging portion (34) for forming the communication path is equal to the bulging height of the outer bulging portion (23) for the first tank and the outer bulging portion (25) for the second tank. It has become.

  On the windward side of the partition plate (29), the first and second aluminum plates (27) have an outer bulging portion for the first pipe portion (22) and upper and lower first bulging portions for the first tank. (23) A first through hole (35) which is long in the vertical direction and passes through the inside is formed. In addition, the upper and lower ends of the intermediate portion of the partition plate (29) in the ventilation direction are respectively passed through the inside of the second tank outer bulge portion (25) of the first and second aluminum plates (21, 27). A second through hole (36) is formed. Further, the upper and lower ends of the leeward side portion of the partition plate (29) are respectively passed through the third tank outer bulge portion (26) of the first and second aluminum plates (21) and (27). Three through holes (37) are formed. The size of the third through hole (37) is smaller than the size of the second through hole (36).

  The first aluminum plate (21), the second aluminum plate (27), and the partition plate (29) are formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides.

  And the 1st refrigerant | coolant flow pipe part (2) is formed of the 1st aluminum plate (21) of a flat hollow body (8), and the outward bulging part (22) for 1st pipe parts of a 2nd aluminum plate (27). The second refrigerant flow pipe portion (3) is formed by the outer bulge portion (24) for the second pipe portion and the partition plate (29) of the first aluminum plate (21), and the second aluminum plate (27 The third tube portion outward bulge portion (28) and the partition plate (29) form a cold storage material enclosing tube portion (4). In the 1st refrigerant distribution pipe part (2), the outside for the 1st pipe part of the 1st aluminum plate (21) and the 2nd aluminum plate (27) through the 1st penetration hole (35) of the partition plate (29) A corrugated aluminum inner fin (38) is disposed so as to straddle the bulging portion (22) and brazed to the first aluminum plate (21) and the second aluminum plate (27). A corrugated aluminum inner fin (39) is disposed in the second refrigerant flow pipe section (3) and brazed to the first aluminum plate (21) and the partition plate (29). The communication path (20) is formed by the communication channel forming outer bulge portion (34) of the first aluminum plate (21) and the second aluminum plate (27) of the flat hollow body (8). Further, a corrugated aluminum inner fin (30) is disposed in the cold storage material enclosing tube portion (4) and brazed to the second aluminum plate (27) and the partition plate (29).

  Further, the first tank forming portion (17) is formed by the first tank outer bulge portion (23) of the first aluminum plate (21) and the second aluminum plate (27) in each flat hollow body (8). The second tank forming portion (18) is formed by the second tank outer bulging portion (25) of the first aluminum plate (21) and the second aluminum plate (27), and the first aluminum plate (21) and A third tank forming portion (19) is formed by the third tank outward bulging portion (26) of the second aluminum plate (27).

  Then, the first tank outer bulging portion (23), the second tank outer bulging portion (25), and the third tank outer bulging portion (26) of the adjacent flat hollow bodies (8) are provided. The bulging top walls are brazed so that the communication holes (31), (32), and (33) can communicate with each other, and the first tank forming portion (17) of the entire flat hollow body (8) is used for the first communication for refrigerant. The tank part (5) is configured, the second tank forming part (18) constitutes the second communication tank part for refrigerant (6), and the third tank forming part (19) constitutes the regenerator material communication tank part (7). Is configured. The space between the first refrigerant flow pipe portions (2) of the adjacent flat hollow bodies (8) becomes the windward ventilation gap (10A), from the second refrigerant flow pipe portion (3) and the regenerator material enclosure pipe portion (4). Between these pairs (9) is the leeward ventilation gap (10B). Further, the first and second refrigerant flow pipe portions (2) and (3) of the flat hollow body (8), the first communication tank portion (5) for refrigerant and the second communication tank portion (6) for refrigerant, and the outer The fin (11) forms an evaporation section, and the cool storage material enclosing tube section (4), the cool storage material communication tank section (7), and the outer fin (11) form a cool storage section. A regenerator material (P) whose freezing point is adjusted to about 3 to 10 ° C., for example, water-based or paraffin-based, is enclosed in the regenerator material enclosing tube portion (4) of the regenerator. In addition, the amount of the regenerator material (P) enclosed in the regenerator material enclosure tube (4) should be such that it fills the regenerator material enclosure tube (4) of the flat hollow body (8) up to the upper end. Is good.

  The evaporator with a cold storage function (1) constitutes a refrigeration cycle using a chlorofluorocarbon refrigerant together with a compressor and a condenser as a refrigerant cooler, and is mounted on a vehicle such as an automobile as a car air conditioner.

  In the above-described evaporator (1), when the compressor is turned on, the gas-liquid mixed phase two-phase refrigerant that has passed through the compressor, the condenser, and the expansion valve flows from the refrigerant inlet (15) to the second refrigerant tank for the upper refrigerant (6 ) Enters the right side compartment (6b), divides and flows into the second refrigerant flow pipe portion (3) leading to the right side compartment (6b), and moves downward in the second refrigerant flow pipe portion (3). It flows into the second communication tank section (6) for the lower refrigerant. The refrigerant that has entered the second refrigerant tank (6) for the lower refrigerant flows to the left, and is divided to communicate with the left compartment (6a) of the second refrigerant tank (6) for the upper refrigerant. It flows into the flow pipe part (3), flows upward in the second refrigerant flow pipe part (3), enters the left compartment (6a) of the second communication tank part (6) for the upper refrigerant, 20) through the left compartment (5a) of the upper refrigerant first communication tank (5). The refrigerant that has entered the left compartment (5a) is diverted and flows into the first refrigerant circulation pipe (2) that leads to the left compartment (5a), and flows through the first refrigerant circulation pipe (2). It flows downward and enters the first communication tank portion (5) for the lower refrigerant. The refrigerant that has entered the first refrigerant tank portion (5) for the lower refrigerant flows to the right, is divided, and is divided into the first refrigerant (5b) of the first refrigerant tank portion (5) for the upper refrigerant. The refrigerant flows into the flow pipe section (2), flows upward in the first refrigerant flow pipe section (2), enters the right compartment (5b) of the first communication tank section for the upper refrigerant (5), and enters the refrigerant outlet ( 16) Flow through.

  And while a refrigerant | coolant flows through the inside of the 1st and 2nd refrigerant | coolant flow pipe part (2) (3) of a flat hollow body (8), it passes an upwind ventilation gap (10A) and a leeward ventilation gap (10B). It exchanges heat with air, the refrigerant flows out as a gas phase, and the air is cooled.

  At this time, the cold heat of the low-temperature refrigerant flowing through the first refrigerant flow pipe portion (2) of the flat hollow body (8) is converted into the first aluminum plate (21), the second aluminum plate (27), and the partition plate (29). The cold heat of the low-temperature refrigerant flowing through the second refrigerant flow pipe portion (3) is transferred to the cold storage material enclosed in the cold storage material enclosure pipe portion (4) via the outer fin (11) and the partition plate ( It is transmitted to the regenerator material enclosed in the regenerator material enclosing tube part (4) via 29), and as a result, the cold energy is stored in the regenerator material. And when the air passes through the evaporator with the cold storage function (1), the hot air is not directly applied to the cold storage material enclosing pipe (4), so the cold storage material (P ) Is prevented from being heated by high-temperature air, and it is possible to prevent a decrease in cold storage efficiency.

  When the compressor stops, the cold heat of the regenerator material in the regenerator material enclosing tube (4) is transferred to the leeward ventilation gap (10B) between the adjacent flat hollow bodies (8) through the outer fins (11). ) Is transmitted to the wind passing through. Therefore, even when the compressor is stopped, a rapid decrease in the cooling capacity is prevented.

  FIG. 9 shows a modification of the flat hollow body.

  In the case of the flat hollow body (40) shown in FIG. 9, other aluminum is formed on the bottom wall of the first tube outer bulge (22) of the first aluminum plate (21) and the second aluminum plate (27). Protrusions (41) projecting toward the plates (27) (21) are formed to be scattered. The projections (41) of both aluminum plates (21) and (27) are formed at positions that match each other, and the tips of the projections (41) of both aluminum plates (21) and (27) are in contact with each other. It is brazed. The first aluminum plate (21) is formed so as to be dotted with protrusions (42) protruding toward the partition plate (29) on the bottom wall of the second bulge portion for the second pipe portion (24). The tip of the protrusion (42) is brazed to the partition plate (29) in a state of being in contact with the partition plate (29). Furthermore, the second aluminum plate (27) is formed so as to be dotted with projections (43) projecting toward the partition plate (29) on the bottom wall of the third tubular portion outward bulge portion (28). The tip of the protrusion (43) is brazed to the partition plate (29) in a state of being in contact with the partition plate (29).

  Other configurations are the same as those of the flat hollow body (8) of the first embodiment.

Embodiment 2
This embodiment is shown in FIGS. In the description of the second embodiment, the upper and lower sides and the left and right are the same as those in the first embodiment.

  In the case of the evaporator with the cold storage function of the second embodiment, a set (9) consisting of the second refrigerant circulation pipe part (3) and the cold storage material sealing pipe part (4) (hereinafter referred to as the first cold storage material sealing pipe part (4)). On the leeward side (front side), a flat second regenerator material enclosing tube portion (50) extending in the vertical direction is disposed in the width direction in the wind direction and spaced from each other in the left-right direction. The inside of the second regenerator material enclosing pipe part (50) is communicated with the inside of the first regenerator material enclosing pipe part (4) forming a group (9) with the second refrigerant circulation pipe part (3). The upper and lower ends of the first regenerator material enclosing tube (4) of the evaporator with the regenerator function of Embodiment 2 are not communicated with the upper and lower regenerator tanks (7), and the second regenerator material enclosed tube The upper and lower ends of the part (50) are communicated with the upper and lower regenerator material communication tank part (7). Further, the thickness of the second regenerator material enclosing tube part (50) is equal to the thickness of the set (9) comprising the second refrigerant circulation tube part (3) and the first regenerator material enclosing tube part (4). . The leeward side portion of the outer fin (11) reaches the second regenerator material enclosing tube part (50) and is brazed to the second regenerator material enclosing tube part (50).

  The leeward side portion of the flat hollow body (51) constituting the evaporator with the cold storage function of the second embodiment projects forward from the flat hollow body (8) constituting the evaporator with the cold storage function of the first embodiment. The second regenerator material enclosing tube portion (50) extending vertically in the leeward side of the group (9) comprising the second refrigerant flow tube portion (3) and the first regenerator material enclosing tube portion (4) in the body (51) ) Is provided. The width in the front-rear direction of the second tank forming part (18) forming the second communication tank part (6) for refrigerant of the flat hollow body (51) is the same as the width in the front-rear direction of the second refrigerant flow pipe part (3). It is almost equal. In addition, a third tank forming portion in the form of a bulge that forms a cold storage material communication tank portion (7) in a portion leeward of the second tank forming portion (18) at the upper and lower ends of the flat hollow body (51). (52) is provided. The width in the front-rear direction of the third tank forming part (52) is substantially equal to the width in the front-rear direction of the second cool storage material enclosure pipe part (50).

  The flat hollow body (51) includes a first tube outer bulge portion (22), a first tank outer bulge portion (23), a second pipe portion outer bulge portion (24), and In addition to the second tank outer bulge part (25), the fourth pipe part outer bulge part (54) and the fourth pipe part for forming the second cold storage material enclosing pipe part (50) A first aluminum plate (53) having a third tank outer bulge portion (55) which is continuous with both upper and lower ends of the outer bulge portion (54) and forms upper and lower third tank forming portions (52); , First tube outer bulge portion (22), first tank outer bulge portion (23), second tank outer bulge portion (25), and third tube outer bulge portion In addition to the projecting portion (28), the fourth tube portion outward bulge portion (54) for forming the second regenerator material enclosing tube portion (50), and the fourth tube portion outward bulge portion ( 54) and a second aluminum plate (56) having a third tank outer bulge portion (55) that is connected to both upper and lower ends and forms upper and lower third tank forming portions (52). The bulges (22), (23), (24), (25), (28), (54), and (55) are arranged in a stack so that the openings face each other, and both aluminum plates (53) and (56) An aluminum partition plate (57) is interposed between the two aluminum plates (53) and (56).

  The bulge height of the fourth bulge outer bulge portion (54) of the first aluminum plate (53) of the flat hollow body (51) is the same as the first bulge outer bulge portion (22) and the first bulge portion. It is equal to the bulging height of the outer bulging portion (24) for the two pipe portions. The bulge height of the fourth tube portion outward bulge portion (54) of the second aluminum plate (27) is the first tube portion outward bulge portion (22) and the third tube portion outward bulge. It is equal to the bulging height of the protruding portion (28), and the inside of the fourth pipe portion outward bulging portion (54) communicates with the inside of the third pipe portion outward bulging portion (28).

  As in the case of the evaporator (1) with the cold storage function of the first embodiment, the first tank plate outside the first aluminum plate (53) excluding the first aluminum plate (53) of the flat hollow body (51) at the left end portion The bulging top walls of the side bulging portion (23), the second tank outer bulging portion (25), and the third tank outer bulging portion (55) are each provided with communication holes (31) (32) ( 58) is formed. The first tank outward bulge portion (23) and the second tank outward bulge of the second aluminum plate (56) excluding the second aluminum plate (56) of the flat hollow body (51) at the center in the left-right direction. Communication holes (31) and (32) are formed in the bulging top wall of the protruding portion (25). A communication hole (in the bulging top wall of the third tank outer bulging portion (55) of the second aluminum plate (56) excluding the second aluminum plate (56) of the flat hollow body (51) at the right end portion ( 58) is formed.

  In addition to the first through hole (35) that is long in the vertical direction and the second through holes (36) at the upper and lower ends, the partition plate (57) includes both the upper and lower sides of the first and second aluminum plates (53) and (56). A third through hole (59) is formed through the inside of the third tank outward bulge (55). The size of the third through hole (59) is smaller than the size of the second through hole (36).

  The first aluminum plate (53), the second aluminum plate (56) and the partition plate (57) are formed by pressing an aluminum brazing sheet having a brazing material layer on both sides.

  And the outward bulge part (22) for 1st pipe parts of the 1st aluminum plate (53) of a flat hollow body (51), and the outward bulge part for 1st pipe parts (2nd aluminum plate (57)) ( 22) forms the first refrigerant flow pipe portion (2), and the second refrigerant flow is formed by the second pipe outer bulge portion (24) and the partition plate (57) of the first aluminum plate (53). A pipe part (3) is formed, and a first cold storage material-filled pipe part (4) is formed by the outer bulge part (28) for the third pipe part of the second aluminum plate (56) and the partition plate (57). The second cold storage is performed by the fourth tube outer bulge portion (54) of the first aluminum plate (53) and the fourth tube outer bulge portion (54) of the second aluminum plate (56). A material enclosing tube portion (50) is formed. Therefore, the inside of the second regenerator material enclosing tube portion (50) is divided into left and right sections by the partition plate (57). The partition plate (57) may be formed with penetrating holes through the left and right compartments of the second regenerator material enclosing tube portion (50). The corrugated aluminum inner fin (100) extends over the right side of the partition plate (57) in the first first regenerator material enclosing tube (4) and in the second regenerator material enclosing tube (50). ) Is disposed and brazed to the second aluminum plate (56) and the partition plate (57). Further, a corrugated aluminum inner fin (101) is disposed on the left side of the partition plate (57) in the second regenerator material enclosing tube portion (50), so that the first aluminum plate (53) and the partition plate are arranged. (57) is brazed.

  Further, the third tank outer bulge portion (55) of the first aluminum plate (53) and the third tank outer bulge portion (55) of the second aluminum plate (56) in each flat hollow body (51). ) Form a third tank forming part (52).

  Then, the first tank outer bulge portion (23), the second tank outer bulge portion (25), and the third tank outer bulge portion (55) of the adjacent flat hollow bodies (51) are arranged. The bulging top walls are brazed so that the communication holes (31), (32), and (58) can communicate with each other, and the first tank forming portion (17) of the entire flat hollow body (51) is used for the first communication for the refrigerant. A tank part (5) is constituted, a second tank forming part (18) constitutes a refrigerant second communication tank part (6), and a third tank forming part (52) constitutes a cold storage material communication tank part (7). Is configured.

  The other configurations of the evaporator with the cold storage function of the second embodiment are the same as those of the evaporator with the cold storage function of the first embodiment, and the cooling and cooling operation when the compressor is on and the cooling operation when the compressor is stopped are also performed. This is the same as the evaporator with the cold storage function of the first mode.

  In the first embodiment, the first refrigerant flow pipe part (2), the second refrigerant flow pipe part (3), and the cold storage material enclosing pipe part (4) are integrally provided in the flat hollow body (8), and the refrigerant The first communication tank portion (5), the refrigerant second communication tank portion (6), and the cold storage material communication tank portion (7) are the first refrigerant flow pipe portion (2) and the second refrigerant flow pipe portion (3). However, the present invention is not limited to this, and the first refrigerant circulation pipe part (2), the second refrigerant circulation pipe part (3), and the cold storage material enclosure are provided. The pipe part (4) is a flat pipe provided separately, and the refrigerant first communication tank part (5), the refrigerant second communication tank part (6) and the cold storage material communication tank part (7) are the first ones. You may consist of a tank joined to the flat tube which forms the 1 refrigerant | coolant flow pipe part (2), the 2nd refrigerant | coolant flow pipe part (3), and the cool storage material enclosure pipe part (4). Moreover, in the said Embodiment 2, a 1st refrigerant | coolant circulation pipe part (2), a 2nd refrigerant | coolant circulation pipe part (3), a 1st cool storage material enclosure pipe part (4), and a 2nd cool storage material enclosure pipe part (50). Is provided integrally with the flat hollow body (51), and the first refrigerant tank (5), the second refrigerant tank (6), and the refrigerant storage tank (7) flow through the first refrigerant. The pipe part (2), the second refrigerant circulation pipe part (3), and the second regenerator material enclosing pipe part (50) are integrally provided, but the first refrigerant circulation pipe part is not limited to this. (2) The second refrigerant circulation pipe part (3), the first regenerator material enclosing pipe part (4) and the second regenerator material enclosing pipe part (50) are separately provided flat tubes, The first communication tank part (5), the second communication tank part for refrigerant (6), and the communication tank part for cold storage material (7) are the first refrigerant flow pipe part (2), the second refrigerant flow pipe part (3) and the second 2 The joint joined to the flat tube forming the regenerator enclosure tube part (50) It may be made from the click.

Embodiment 3
This embodiment is shown in FIG. 12 and FIG. In the description regarding the third embodiment, it is assumed that the top, bottom, left and right in FIG.

  FIG. 12 shows the overall configuration of the evaporator with a cold storage function of the third embodiment, and FIG. 13 shows the configuration of the main part thereof.

  In FIG. 12, an evaporator (60) with a cold storage function includes an aluminum first header tank (61) and an aluminum second header tank (62) which are arranged in the vertical direction and spaced apart from each other, and both headers. And a heat exchange core section (63) provided between the tanks (61) (62).

  The first header tank (61) has a refrigerant inlet header part (64) located on the front side (leeward side) and a refrigerant outlet located on the rear side (leeward side) and integrated with the refrigerant inlet header part (64). And a header portion (65). A refrigerant inlet (66) is provided at the right end of the refrigerant inlet header (64), and a refrigerant outlet (67) is provided at the right end of the refrigerant outlet header (65). The second header tank (62) includes a first intermediate header portion (68) located on the front side and a second intermediate header portion (69) located on the rear side and integrated with the first intermediate header portion (68). And. The first intermediate header portion (68) and the second intermediate header portion (69) of the second header tank (62) are communicated by appropriate means.

  As shown in FIGS. 12 and 13, the heat exchange core portion (63) is made of a flat aluminum extruded shape member extending in the vertical direction and having the width direction directed in the front-rear direction and spaced apart from each other in the left-right direction. On the leeward side of the first refrigerant flow pipe (71) (first refrigerant flow pipe portion) and the first refrigerant flow pipe (71), the width direction is directed in the front-rear direction and the left and right directions are spaced apart from each other. Between the second refrigerant flow pipe (72) (second refrigerant flow pipe portion) made of a flat aluminum extruded shape extending in the vertical direction and the two adjacent second refrigerant flow pipes (72), on the left side here A cold storage material enclosing tube portion (73) disposed in contact with the second refrigerant circulation tube (72), brazed to the second refrigerant circulation tube (72) and encapsulated with the cold storage material (P). Yes. The thickness and width of the first refrigerant flow pipe (71) are equal to the thickness and width of the second refrigerant flow pipe (72).

  The space between adjacent ones of the first refrigerant flow pipe (71) of the evaporator (60) with the cold storage function becomes the windward ventilation gap (74A), and the second refrigerant flow pipe (72) and the cold storage material enclosing pipe section (73) Between the adjacent members of the group (75) consisting of the parts is the leeward side ventilation gap (74B). Aluminum corrugated first outer fins (76) are arranged in all the windward ventilation gaps (74A) and brazed to the first refrigerant flow pipe (71), and all the leeward ventilation gaps (74B) The aluminum corrugated second outer fin (77) formed separately from the first outer fin (76) is disposed on the left side surface of the second refrigerant flow pipe (72) and the regenerator material enclosing pipe section (73 ) Is brazed to the right side. The fin height, which is the horizontal dimension of the second outer fin (77), is lower than the fin height of the first outer fin (76) by the thickness of the regenerator material enclosing tube portion (73). Moreover, the 1st outer fin (76) is arrange | positioned on the outer side of the 1st and 2nd refrigerant | coolant circulation pipe | tube (72) of both right and left ends, and is brazed to the 1st and 2nd refrigerant | coolant circulation pipe | tube (72). Further, aluminum side plates (78) are disposed outside the first outer fins (76) at the left and right ends, and are brazed to the first outer fins (76).

  An upper end portion of the second refrigerant flow pipe (72) is connected to the refrigerant inlet header portion (64), and a lower end portion thereof is connected to the first intermediate header portion (68). The upper end of the first refrigerant flow pipe (71) is connected to the refrigerant outlet header (65), and the lower end is connected to the second intermediate header (69).

  Both the upper and lower ends of the regenerator material enclosing tube portion (73) are closed, and the regenerator material enclosing tube portion (73) has a regenerator material (for example, water-based, paraffin-based freezing point adjusted to about 3 to 10 ° C.) P) is filled. The filling amount of the regenerator material (P) in the regenerator material enclosing tube part (73) is preferably an amount that fills the entire regenerator material enclosing tube part (73) up to the upper end. A corrugated aluminum inner fin (102) is disposed in the regenerator material enclosing tube (73) and brazed to the left and right side walls of the regenerator material enclosing tube (73).

The evaporator (60) with the cold storage function 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 decompresses the refrigerant that has passed through the condenser ( A refrigeration cycle that uses a chlorofluorocarbon refrigerant together with a decompressor) is mounted on a vehicle, for example, an automobile, that temporarily stops an engine that is a driving source of a compressor when the vehicle is stopped as a car air conditioner. 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 (66) and has an evaporator with a cold storage function ( 60) enters the refrigerant inlet header portion (64), passes through the second refrigerant flow pipe (72), and flows into the first intermediate header portion (68). The refrigerant that has entered the first intermediate header portion (68) flows into the outlet header portion (65) through the first refrigerant flow pipe (71) after entering the second intermediate header portion (69). And flows out from the refrigerant outlet (67). While the refrigerant flows in the first and second refrigerant flow pipes (72), heat exchange is performed with the air passing through the windward and leeward ventilation gaps (74A) and (74B), and the refrigerant becomes a gas phase. And the air is cooled.

  At this time, when the regenerator material (P) in the regenerator material enclosing pipe part (73) is cooled by the refrigerant flowing in the second refrigerant circulation pipe (72) and passes through the upwind ventilation gap (74A), The regenerator material (P) in the regenerator material enclosing pipe part (73) is cooled by the air cooled by the refrigerant flowing in the first refrigerant circulation pipe (71). Cold energy is efficiently stored in the cold storage material (P). When the air passes through the evaporator with a cold storage function (60), since the high temperature air does not directly hit the cold storage material enclosing pipe (73), the cold storage material ( P) is prevented from being heated by high-temperature air, and it is possible to suppress a decrease in cold storage efficiency.

  When the compressor stops, the cold heat of the regenerator material (P) in the regenerator material enclosure tube (73) is transferred from the right side surface of the regenerator material enclosure tube (73) to the regenerator material enclosure tube (73). The air is transmitted to the air passing through the leeward side ventilation gap (74B) via the brazed second outer fin (77), and the second refrigerant flow pipe (72 ) And the second outer fin (77) brazed to the second refrigerant flow pipe (72), the air is transmitted to the air passing through the leeward ventilation gap (74B). Therefore, even if the temperature of the wind that has passed through the evaporator (60) with a cold storage function rises, the wind is cooled, so that a rapid decrease in cooling capacity is prevented.

Embodiment 4
This embodiment is shown in FIG. In the description of the fourth embodiment, the upper and lower sides and the left and right are the same as those in the third embodiment.

  FIG. 14 shows a main part of the evaporator with a cold storage function of the fourth embodiment.

  In the case of the evaporator with the cold storage function of the fourth embodiment, the width of the cold storage material enclosing tube portion (80) and the second outer fin (81) in the front-rear direction is the cold storage material enclosure tube portion (73) of the evaporator with the cold storage function of the third embodiment. And the width of the first outer fin (82) in the front-rear direction is wider than the width of the second outer fin (77) in the front-rear direction, and the first outer fin (76) of the evaporator with a cold storage function of the third embodiment. It is narrower than the width in the front-rear direction. The windward end of the regenerator material enclosing tube (80) and the windward end of the second outer fin (81) protrude further to the windward side than the second refrigerant flow tube (72), The cool storage material enclosing pipe portion (80) enters the leeward side portion of the upper ventilation gap (74A), and the left first refrigerant circulation pipe (71) of the two adjacent first refrigerant circulation pipes (71). Is brazed to the right side surface of the first refrigerant flow pipe (71) in a state of being in contact with. The second outer fin (81) is brazed to the right side surface of the regenerator material enclosing tube portion (80) and the left side surfaces of the first and second refrigerant flow tubes (71), (72). The width in the front-rear direction of the inner fin (103) in the regenerator material enclosing tube (80) is the same as that of the inner fin (102) in the regenerator material enclosing tube (73) of the evaporator with a cool storage function of the third embodiment. It is wider than the width of the direction.

  Other configurations are the same as those of the evaporator with the cold storage function of the third embodiment.

  In the case of the evaporator with the cold storage function of the fourth embodiment, the cooling of the air when the compressor is operating is the same as the evaporator with the cold storage function of the third embodiment.

  In addition, when the compressor is operating, the regenerator material (P) in the regenerator material enclosing tube portion (80) includes the refrigerant flowing in the second refrigerant flow tube (72) and the first refrigerant flow tube (71). ) And the air cooled by the refrigerant flowing in the first refrigerant circulation pipe (71) when passing through the windward ventilation gap (74A), and as a result, the cold storage material enclosing pipe part ( 73) Cold energy is efficiently stored in the cold storage material (P). And when the air passes through the evaporator with a cool storage function, the cool storage material enclosing tube (80) is not directly exposed to high temperature air, so the cool storage material (P) in the cool storage material enclosing tube (80) It is prevented from being heated by high-temperature air, and it is possible to suppress a decrease in cold storage efficiency.

Embodiment 5
This embodiment is shown in FIG. 15 and FIG. In the description of the fifth embodiment, the upper and lower sides and the left and right are the same as those in the third embodiment.

  15 and 16 show the main part of the evaporator with a cold storage function of the fifth embodiment.

  In FIG. 15, the space between the adjacent second refrigerant flow pipes (72) is the leeward side ventilation gap (74C), and all the leeward side ventilation gaps (74C) have left and right sides of the leeward side ventilation gap (74C). An aluminum regenerator enclosing tube portion (90) having a thickness equal to the width in the direction is arranged so as to contact the second refrigerant flow tubes (72) on both the left and right sides. In addition, the cool storage material enclosure pipe part (90) may be brazed to the second refrigerant flow pipes (72) on both the left and right sides. A regenerator material (P) having a freezing point of about 3 to 10 ° C., such as water or paraffin, is enclosed in the regenerator material enclosing tube portion (90).

  As shown in FIGS. 15 and 16, the regenerator material enclosing tube portion (90) is formed by pressing an aluminum brazing sheet having a brazing filler metal layer on both sides, and the front and rear side edges are full length. Both left and right metal plates (91) brazed over and upper and lower metal plates (92) made of an aluminum brazing sheet having a brazing material layer on both sides and brazed to both upper and lower ends of both left and right metal plates (91) And more. The left and right metal plates (91) are formed with an outer bulging portion (93) extending in the vertical direction and bulging outward in the left and right direction, except for the front and rear side edges that are brazed to each other. A hollow portion having upper and lower ends opened between the outwardly bulging portions (93) of the left and right metal plates (91), and the upper and lower end openings of the hollow portion are closed by the upper and lower metal plates (92). Yes.

  On the bulging top wall (93a) of the outward bulging portion (93) of the left and right metal plates (91) of the cold storage material enclosing tube portion (90), a plurality of convex portions (94) projecting outward are It is formed by deforming the bulging top wall (93a). The convex part (94) extends in the vertical direction and is inclined forward in the downward direction, and is formed side by side in the vertical direction and the front-rear direction. The protruding end of the convex portion (94) is a flat surface. The protruding end portion of the convex portion (94) of the regenerator material enclosing tube portion (90) is brazed to the outer surface of the second refrigerant flow tube (72), and the regenerator material enclosing tube portion (90) and the first A ventilation gap (95) is formed between the two refrigerant flow pipes (72). A corrugated aluminum inner fin (104) is disposed in the cold storage material enclosing tube portion (90) and brazed to the left and right metal plates (91).

  Other configurations are the same as those of the evaporator with a cold storage function of the third embodiment.

  In the case of the evaporator with the cold storage function of the fifth embodiment, the cooling of the air when the compressor is operating is the same as the evaporator with the cold storage function of the third embodiment. When the air flows through the leeward side ventilation gap (74C), the ventilation resistance increases because it flows through the ventilation gap (95) between the regenerator material enclosure pipe (90) and the second refrigerant circulation pipe (72). Is suppressed.

  When the compressor is operating, the regenerator material in the regenerator material enclosing tube (90) passes through the refrigerant flowing in the second refrigerant flow tube (72) and the upwind ventilation gap (74A). In doing so, it is cooled by the air cooled by the refrigerant flowing in the first refrigerant flow pipe (71), and as a result, cold heat is efficiently stored in the cold storage material (P) in the cold storage material enclosing pipe section (90). When the air passes through the evaporator with the cool storage function, the cool storage material enclosing tube part (90) is not directly exposed to the high temperature air, so the cool storage material (P) in the cool storage material enclosing tube part (90) is hot. It is possible to prevent the air from being heated by the air, and it is possible to suppress a decrease in cold storage efficiency.

  When the compressor is stopped, the cold heat of the regenerator material (P) in the regenerator material enclosing tube part (90) is cooled from the both sides of the regenerator material enclosing tube part (90) in the leeward ventilation gap (74C). It is transmitted to the air passing through the ventilation gap (95) formed between the material enclosing tube portion (90) and the second refrigerant flow tube portion (72). Therefore, even if the temperature of the wind that has passed through the evaporator with the cold storage function rises, the wind is cooled, so that a rapid decrease in the cooling capacity is prevented.

  In Embodiment 5 described above, the regenerator material enclosing pipe portion (90) is disposed in all the leeward side ventilation gaps (74C), but is not limited to this, and some of the leeward side ventilation gaps are not limited thereto. The regenerator material enclosing tube portion (90) may be disposed only at (74C).

  The evaporator with a cold storage function according to the present invention is suitably used for 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.

Claims (6)

On the leeward side of the first refrigerant flow pipe portion and the flat first refrigerant flow pipe portions arranged in the width direction and in the air flow direction and spaced from each other, the width direction is directed in the air flow direction and spaced from each other. Between the flat second refrigerant flow pipe portion and the two second refrigerant flow pipe portions facing the width direction in the air flow direction and adjacent to each other so as to contact at least one of the second refrigerant flow pipe portions. And a flat regenerator material enclosing tube portion in which the regenerator material is enclosed ,
The space between the adjacent ones of the first refrigerant flow pipe portions becomes the windward ventilation gap, and the regenerator material enclosing pipe portion is brought into contact with either one of the two adjacent second refrigerant flow pipe portions, and the second The leeward side ventilation gaps are formed between the adjacent sets of the refrigerant storage pipe part and the cold storage material enclosing pipe part brought into contact with the second refrigerant circulation pipe part, and the first fins are provided in all the windward side ventilation gaps. Are arranged, and second fins formed separately from the first fins are arranged in all the leeward side ventilation gaps, and the thickness of the first refrigerant flow pipe portion and the thickness of the second refrigerant flow pipe portion. And the fin height, which is the dimension in the thickness direction of both refrigerant flow pipe portions in the second fin, is smaller than the fin height, which is the dimension in the thickness direction of both refrigerant flow pipe portions in the first fin. , Windward side of the regenerator material tube Parts and the upwind-side end of the second fin, the second with projecting upwind than the refrigerant circulation pipe unit, windward passing clearances leeward side enters in which the evaporator with a cool storage function to the part of the. On the leeward side of the first refrigerant flow pipe portion and the flat first refrigerant flow pipe portions arranged in the width direction and in the air flow direction and spaced from each other, the width direction is directed in the air flow direction and spaced from each other. Between the flat second refrigerant flow pipe portion and the two second refrigerant flow pipe portions facing the width direction in the air flow direction and adjacent to each other so as to contact at least one of the second refrigerant flow pipe portions. And a flat regenerator material enclosing tube portion in which the regenerator material is enclosed,
Between the adjacent ones of the first refrigerant circulation pipe part is a windward ventilation gap, between the adjacent ones of the second refrigerant circulation pipe part is a leeward ventilation gap, and fins are arranged in the windward ventilation gap, An evaporator with a cool storage function in which a cool storage material enclosing tube portion in which a cool storage material is sealed is disposed in at least a part of all the leeward side ventilation gaps and is brought into contact with the second refrigerant flow tube portions on both sides . The thickness of the regenerator material enclosing tube part is equal to the width of the leeward side ventilation gap, and the regenerator material enclosing tube part is disposed in some of the leeward side airflow gaps, and the rest The evaporator with a cool storage function according to claim 2 , wherein fins are arranged in the leeward side ventilation gap . A convex portion projecting outward is formed on at least one side surface of both side surfaces of the regenerator material enclosing tube portion, and the projecting end portion of the convex portion is brought into contact with the second refrigerant flow tube portion. The evaporator with a cool storage function according to claim 3, wherein a ventilation gap is formed between the cool storage material sealing tube portion and the second refrigerant circulation tube portion . The thickness of the regenerator material enclosing tube portion is equal to the width of the leeward side ventilation gap, the regenerator material enclosing tube portion is disposed in the entire leeward side airflow gap, and at least one side surface of both sides of the regenerator material enclosing tube portion A plurality of convex portions projecting outward are formed, and the projecting end portion of the convex portion is brought into contact with the second refrigerant flow tube portion, whereby the cold storage material enclosing tube portion and the second refrigerant flow tube portion The evaporator with a cool storage function according to claim 2, wherein a ventilation gap is formed between the two . The evaporator with a cool storage function according to any one of claims 1 to 5, wherein the first coolant circulation pipe part, the second coolant circulation pipe part, and the cool storage material enclosing pipe part are separately formed .

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