JP2016223680A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger capable of achieving further improvement of heat exchange properties.SOLUTION: A cold storage case 9 which is arranged between circulation surfaces of blowing air of at least one pair of adjacent tubes 5, 5 out of a plurality of tubes 5, and in which a cold storage agent is filled includes: a first cold storage case part 11 adhered closely to the circulation surface of blowing air of one of the adjacent tubes 5; and a second cold storage case part 13 adhered closely to the circulation surface of blowing air of the other one of the adjacent tubes 5. Between the circulation surfaces of blowing air of the first cold storage case part 11 and the second cold storage case part 13, a second fin 15 is arranged for facilitating heat exchange with the blowing air.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat exchanger applied to a vehicle.

  Conventionally, as a heat exchanger, a pair of tanks that are arranged on both sides in a direction orthogonal to the flow direction of the blown air and in which refrigerant is circulated, and both ends are connected to the pair of tanks and refrigerant is circulated and the blown air and A plurality of tubes arranged along the longitudinal direction of the tank by performing heat exchange between the plurality of tubes, a plurality of first fins arranged on a flow surface of the blown air of the plurality of tubes and stirring the blown air, and a plurality of tubes Among them, there is known one provided with a cold storage case disposed between the flow surfaces of the blown air of at least one adjacent tube and filled with a cold storage agent (for example, see Patent Document 1).

  In this heat exchanger, both side surfaces, which are the flow surfaces of the blast air of the cold storage case, are arranged in close contact with the flow surfaces of adjacent tubes.

  For this reason, since blast air cannot distribute | circulate the both sides | surfaces of a cool storage case, the heat exchange efficiency between a cool storage agent and blowing air has fallen, and the cool storage property of the cool storage agent with which the cool storage case was filled, or cooling The sex was decreasing.

  On the other hand, one side surface of the cold storage case is in close contact with the air flow surface of the adjacent one of the tubes, and the air flow surface of the other one of the tubes adjacent to the other side surface of the cold storage case; There is known one in which fins for agitating the blown air are disposed (see, for example, Patent Document 2).

Japanese Patent No. 5444782 Japanese Patent No. 4043776

  By the way, in the heat exchanger like the said patent document 2, since the ventilation air distribute | circulates the other side surface of a cool storage case, and the fin which stirs ventilation air is arrange | positioned in the part through which this ventilation air distribute | circulates, the said patent Although the heat exchange between the regenerator and the blown air is improved as compared with the heat exchanger as in Document 1, further improvement in heat exchange is desired.

  Then, this invention aims at provision of the heat exchanger which can aim at the further improvement of heat exchange property.

  The present invention includes a pair of tanks disposed on both sides in a direction orthogonal to the flow direction of the blown air, and a refrigerant flowing therein, and both ends communicated with the pair of tanks and the refrigerant is circulated between the blown air. And a plurality of tubes arranged along the longitudinal direction of the tank and a plurality of first fins arranged on the flow surface of the blown air of the plurality of tubes to promote heat exchange with the blown air, A heat exchanger provided with a cool storage case disposed between the flow surfaces of the blown air of at least one adjacent tube among the plurality of tubes and filled with a cool storage agent therein, wherein the cool storage case is adjacent A first cold storage case portion that is in close contact with a flow surface of the blown air of the one of the fitting tubes, and a second cold storage case portion that is in close contact with the flow surface of the blown air of the other adjacent tube; K Between distribution surface of the blown air between the parts and the second cold storage case portion, wherein the second fins to facilitate heat exchange with the blown air is arranged.

  According to the present invention, it is possible to provide a heat exchanger capable of further improving the heat exchange property.

It is a perspective view of the heat exchanger which concerns on embodiment of this invention. It is sectional drawing of the heat exchanger which concerns on embodiment of this invention. It is a perspective view of the cool storage case of the heat exchanger which concerns on embodiment of this invention. (A) is a perspective view of the longitudinal direction one end side of the cool storage case of the heat exchanger which concerns on embodiment of this invention. (B) is a perspective view of the other end side in the longitudinal direction of the cold storage case of the heat exchanger according to the embodiment of the present invention. It is the perspective view which made a part the longitudinal direction one end side of the cool storage case of the heat exchanger which concerns on embodiment of this invention made the cross section.

  The heat exchanger which concerns on embodiment of this invention is demonstrated using FIGS.

  The heat exchanger 1 according to the present embodiment includes a pair of tanks 3 and 3 that are arranged on both sides in a direction orthogonal to the flow direction of the blown air and in which a refrigerant is circulated. The plurality of tubes 5 arranged in the longitudinal direction of the tank 3 by exchanging heat with the blown air through communication with the refrigerant, and the blown air arranged on the flow surface of the blown air of the plurality of tubes 5 Regenerator case in which a plurality of first fins 7 that promote heat exchange with each other and at least one adjacent tube 5 among a plurality of tubes 5 are arranged between the flow surfaces of the blown air and are filled with a regenerator. 9 and.

  The cool storage case 9 includes a first cool storage case portion 11 that is in close contact with the air flow surface of the adjacent one of the tubes 5 and a second cold storage case portion that is in close contact with the air flow of the other adjacent tube 5. 13.

  And between the distribution surfaces of the blast air of the 1st cool storage case part 11 and the 2nd cool storage case part 13, the 2nd fin 15 which accelerates | stimulates heat exchange with blast air is arrange | positioned.

  The cold storage case 9 has a connecting portion 17 that connects the first cold storage case portion 11 and the second cold storage case portion 13, and the connecting portion 17 includes the first cold storage case portion 11 and the second cold storage case portion 13. A cold storage agent inlet 19 is provided to fill the storage medium with the cold storage agent.

  In the present embodiment, the front side in FIG. 1 will be described as the upstream side of the blown air flow, and the back side in FIG. 1 will be described as the downstream side of the blown air flow.

  Here, the heat exchanger 1 which concerns on this Embodiment is applied to a vehicle air conditioner, for example, and as shown to FIG. 1, FIG. 2, several tubes 5 in the direction orthogonal to a blowing air flow direction. Array.

  By flowing the blast air between the plurality of tubes 5, heat exchange is performed between the blast air flowing on the flow surface along the width direction of the tube 5 and the refrigerant flowing inside the tube 5 to cool the blast air. .

  Thus, the heat exchanger 1 which concerns on this Embodiment functions as an evaporator which cools blowing air.

  As shown in FIGS. 1 and 2, such a heat exchanger 1 includes a pair of tanks 3 and 3 (only one tank 3 is shown) at both ends in the longitudinal direction with respect to one plate 21. A hole portion 23 is formed, and a groove portion 25 constituting the tube 5 is formed along the longitudinal direction so as to connect the pair of tanks 3 and 3.

  By stacking a plurality of such plates 21 on top of each other, the holes 23 on both ends in the longitudinal direction of the plate 21 constitute a pair of tanks 3 and 3, and along the longitudinal direction of the plate 21. The groove portions 25 constitute a plurality of tubes 5 arranged along the longitudinal direction of the tank 3.

  Below, the heat exchanger 1 comprised by laminating | stacking the several plate 21 is demonstrated using FIGS.

  As shown in FIGS. 1 and 2, the heat exchanger 1 includes a pair of tanks 3 and 3, a plurality of tubes 5, a plurality of first fins 7, a cold storage case 9, and the like.

  The pair of tanks 3 and 3 (only one tank 3 is shown) is formed by superimposing a plurality of plates 21 with holes 23 provided at both ends in the longitudinal direction of one rectangular plate 21. A plurality of hole portions 23 are configured to communicate with each other.

  The hole 23 extends in a cylindrical shape outward from the plane of the plate 21, and a plurality of plates 21 are overlapped and brazed in a direction orthogonal to the flow direction of the blown air. One tank 3 extending along the stacking direction is configured.

  Therefore, the pair of tanks 3 and 3 are arranged on both sides of the direction orthogonal to the blowing air flow direction (here, the vertical direction in FIG. 1), and one tank 3 is orthogonal to the blowing air flow direction (here. It becomes the state arrange | positioned along the left-right direction in FIG.

  Two holes 23 constituting such a tank 3 are provided in the longitudinal direction of one plate 21 in the width direction of the plate 21, which is the flow direction of the blown air.

  For this reason, a pair of tanks 3 and 3 will be in the state by which the two tanks 3 and 3 were arrange | positioned in parallel along the blowing air flow direction, respectively. That is, in the heat exchanger 1 according to the present embodiment, four tanks 3 are arranged.

  Of these four tanks 3, the tanks 3, 3 arranged along the flow direction of the blown air are, for example, via a closing member (not shown) brazed to the end in the longitudinal direction and closing the inside of the tank 3. Communicated.

  On the other hand, an inlet pipe (not shown) through which refrigerant flows into the tank 3 is connected to the longitudinal end of any one of the four tanks 3, and any one of the four tanks 3. An outlet pipe (not shown) through which the refrigerant that has flowed through the four tanks 3 and the plurality of tubes 5 flows out is connected to the end in the longitudinal direction of one tank 3.

  The plurality of tubes 5 includes a groove portion 25 provided along the longitudinal direction in the center portion of one plate 21, and the two plates 21 and 21 are symmetrically overlapped to form one piece from the two groove portions 25 and 25. A tube 5 is configured.

  The groove portion 25 is formed in a concave shape by recessing the flat surface of the plate 21, the two plates 21 and 21 are overlapped on the opening side of the groove portion 25, and the two overlapped plates 21 and 21 are blown. By overlapping and brazing a plurality of sets in a direction orthogonal to the air flow direction, a plurality of tubes 5 arranged at equal intervals along the stacking direction of the plates 21 are configured.

  The plurality of tubes 5 are provided in the width direction of the plate 21, which is the flow direction of the blown air, and are arranged so that both ends in the longitudinal direction communicate with the four tanks 3.

  In such a plurality of tubes 5, the refrigerant that has flowed into the tank 3 is circulated, and heat exchange is performed between the blown air flowing on the outer periphery of the tubes 5 and the refrigerant to cool the blown air.

  In addition, inside the tank 3, partition plates (not shown) for closing the hole portions 23 are provided at a plurality of locations, and a refrigerant flow path that circulates between the tank 3 and the plurality of tubes 5 is partitioned. The heat exchange efficiency between the air and the refrigerant is improved.

  A plurality of first fins 7 are respectively arranged between the flow surfaces of the blown air along the width direction of the plurality of tubes 5.

  The plurality of first fins 7 are brazed to the flow surfaces of the blown air of the adjacent tubes 5 and 5, stir the blown air flowing outside the tubes 5, and improve the heat exchange efficiency between the refrigerant and the blown air.

  A cold storage case 9 in which at least one space among the plurality of spaces between the air flow surfaces of the adjacent tubes 5 and 5 in which the plurality of first fins 7 are arranged is filled with a cold storage agent. Is arranged.

  As shown in FIGS. 1 to 5, the cold storage case 9 includes a first cold storage case portion 11 and a second cold storage case portion 13.

  The first cold storage case 11 has a space filled with a cold storage agent therein, and extends along the longitudinal direction of the tube 5.

  This 1st cool storage case part 11 has a width | variety equivalent to the two tubes 5 and 5 arrange | positioned along the blowing air flow direction.

  Such a 1st cool storage case part 11 has the surface facing one tube 5 (here the tube 5 located in the left side in FIG. 1) of the adjacent tubes 5 and 5 of the blast air of one tube 5 in it. It is brazed and fixed in close contact with the distribution surface.

  The second cold storage case portion 13 is formed symmetrically with the first cold storage case portion 11, has a space portion filled with a cold storage agent therein, and extends along the longitudinal direction of the tube 5.

  Similar to the first cold storage case 11, the second cold storage case 13 has a width equivalent to that of the two tubes 5 and 5 arranged along the air flow direction.

  Such a 2nd cool storage case part 13 has the surface which opposes the other tube 5 (here the tube 5 located in the right side in FIG. 1) among the adjacent tubes 5 and 5 of the blowing air of the other tube 5. It is brazed and fixed in close contact with the distribution surface.

  This 1st cool storage case part 11 and the 2nd cool storage case part 13 are connected so that it may mutually communicate via the connection part 17 at the one end side of a longitudinal direction.

  The end portion of the connecting portion 17 is provided with a cold storage agent inlet 19 for filling the first cold storage case portion 11 and the second cold storage case portion 13 with the cold storage agent. After filling the cold storage agent, the sealing member ( (Not shown).

  The cold storage case 9 constituted by the first cold storage case 11 and the second cold storage case 13 is, for example, between the cold storage agent and the blown air by the cold heat stored in the cold storage agent when the vehicle is idling stopped. By performing heat exchange, the blown air is cooled in an auxiliary manner.

  A second fin 15 is disposed between the first cold storage case 11 and the second cold storage case 13.

  The second fins 15 are brazed to the flow surfaces of the blown air facing each other between the adjacent first cool storage case 11 and second cool storage case 13, and the first cool storage case 11 and the second cool storage case. The blown air flowing outside the unit 13 is agitated to improve the heat exchange efficiency between the cool storage agent and the blown air.

  In addition, temporary fixing portions 27 that are elastically cut and raised from the side surfaces are provided on the other end sides in the longitudinal direction of the first cold storage case portion 11 and the second cold storage case portion 13 and are brazed. In the previous state, the cold storage case 9 is temporarily fixed between the adjacent tubes 5 and 5.

  In such a heat exchanger 1, the cold storage case 9 has a first cold storage case portion 11 that is in close contact with the flow surface of the blown air of one adjacent tube 5, and a flow surface of the blown air of the other adjacent tube 5. Since it has the 2nd cool storage case part 13 which sticks, the contact area with tube 5 of cool storage case 9 increases, the cooling efficiency of the refrigerant by a cool storage agent improves, and the distribution area of the ventilation air of cool storage case 9 increases, The heat exchange efficiency between the cool storage agent and the blown air is improved.

  Moreover, since the 2nd fin 15 which accelerates | stimulates heat exchange with blowing air is arrange | positioned between the distribution surfaces of the blowing air of the 1st cool storage case part 11 and the 2nd cool storage case part 13, a cool storage agent and ventilation The efficiency of heat exchange with air can be further improved.

  Therefore, in such a heat exchanger 1, the heat exchange property can be further improved.

  Moreover, since the connection part 17 of the cool storage case 9 is provided with the cool storage agent injection port 19 which makes the 1st cool storage case part 11 and the 2nd cool storage case part 13 fill with a cool storage agent, one cold storage agent of In the enclosing operation, the two first cold storage case portions 11 and the second cold storage case portion 13 can be filled with the cold storage agent, and the assembling property can be improved.

  In the heat exchanger according to the embodiment of the present invention, the tank and the tube are configured by overlapping a plurality of plates. However, the configuration is not limited thereto, and the tank and the tube are configured independently. The heat exchanger may be configured by assembling a tank and a tube.

  Even in such a heat exchanger, a cold storage case can be disposed between adjacent tubes among a plurality of tubes, and the same effect as the heat exchanger according to the embodiment of the present invention can be obtained. .

  Moreover, although two tanks are arrange | positioned in parallel along the blowing air flow direction, respectively, a pair of tank is not restricted to this, Each tank is arrange | positioned or 2 each along a blowing air flow direction Two or more tanks may be arranged in parallel.

DESCRIPTION OF SYMBOLS 1 ... Heat exchanger 3 ... Tank 5 ... Tube 7 ... 1st fin 9 ... Cold storage case 11 ... 1st cold storage case part 13 ... 2nd cold storage case part 15 ... 2nd fin 17 ... Connection part 19 ... Cold storage agent inlet

Claims (2)

A pair of tanks (3, 3) arranged on both sides in a direction orthogonal to the flow direction of the blown air and the refrigerant flowing inside, and both ends communicated with the pair of tanks (3, 3) to circulate the refrigerant. The plurality of tubes (5) arranged in the longitudinal direction of the tank (3) by exchanging heat with the blown air, and arranged on the flow surface of the blown air of the plurality of tubes (5) A plurality of first fins (7) that promote heat exchange with air and at least one of the plurality of tubes (5) arranged between the air flow surfaces of the adjacent tubes (5, 5). A heat exchanger with a cold storage case (9) filled with a cold storage agent,
The cold storage case (9) has a first cold storage case portion (11) that is in close contact with a flow surface of the blown air of the adjacent one of the tubes (5), and a flow of blown air of the other adjacent tube (5). A second cold storage case portion (13) closely contacting the surface,
A second fin (15) that promotes heat exchange with the blown air is disposed between the flow surfaces of the blown air between the first cold storage case (11) and the second cold storage case (13). A heat exchanger characterized by that. The heat exchanger according to claim 1,
The cold storage case (9) has a connecting portion (17) for connecting the first cold storage case portion (11) and the second cold storage case portion (13),
The connection part (17) is provided with a cold storage agent inlet (19) for filling the cold storage agent in the first cold storage case part (11) and the second cold storage case part (13). Features heat exchanger.

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