JP2015014399A - Cold storage heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold storage heat exchanger capable of preventing displacement of the mutual position of plates when a tube is inserted into openings of two or more of laminated plates.SOLUTION: A cold storage heat exchanger 10 includes a plurality of tubes 20, and a tank 22 to which the tubes 20 are inserted. The tank 22 includes a central plate 24, a refrigerant tank side plate 26, and a cold storage material tank side plate 28, and forms a refrigerant tank chamber D on one surface side of the central plate 24, and a cold storage material tank chamber S on the other surface side of the central plate 24. Refrigerant piping parts 18p and 18q of the tube 20 penetrate the cold storage material tank side plate 28 and the central plate 24, the central plate 24 has a rail shaped central plate fitting part 24t extended to a tank longitudinal direction, and the cold storage material tank side plate 28 has a cold storage material tank side plate fitting part 28t fitted to the central plate fitting part 24t.

Description

  The present invention relates to a cold storage heat exchanger incorporated in an air conditioning unit that is installed in an automobile and supplies conditioned air into the vehicle.

  There has been proposed a vehicle equipped with an idling stop function for stopping driving of the engine when the vehicle is temporarily stopped. In a vehicle equipped with this idling stop function, the compressor for refrigerant compression that is operating by driving from the engine also stops when idling is stopped. When the refrigerant compressor stops, the desired conditioned air cannot be sent into the passenger compartment. In Patent Document 1, a cold storage material is provided in the vicinity of the evaporator in advance in order to supply cold air even when idling is stopped, and heat exchange between the cold storage material and air is performed even when the supply of refrigerant to the evaporator is stopped. A cold storage heat exchanger having a structure capable of supplying cold air is described.

  In the regenerator heat exchanger described in Patent Document 1, a regenerator with a built-in regenerator material is arranged on the downstream side (downstream side) of the air flow, and the regenerator is stored with cold air formed by the operation of the refrigerant compressor by normal running. It cools in the cooler and cools the air that passes through this cooler when idling stops.

Special table 2009-525911

  By the way, in the structure which arrange | positioned the cool storage in the downstream side of the evaporator described in patent document 1, three plates are made into a laminated structure, and an evaporation chamber and a cool storage material (cold storage member) are accommodated between plates. A cold storage tank room (cold storage) is formed.

  To form such a configuration, when the tube is inserted into the stacked plate from the bottom side, if the tube interferes with the center plate because the tube tip hits the center plate, the mutual position of the three plates will shift. There is a harmful effect of end.

  Then, this invention makes it a subject to provide the cool storage heat exchanger which prevented the mutual position of a plate shifting | deviating, when inserting a tube in each opening of two or more plates among the laminated | stacked plates.

  To achieve the above object, the present invention provides a plurality of tubes each having a refrigerant passage through which a refrigerant passes and a regenerator filling path filled with a regenerator, and a tube provided on the end side in the longitudinal direction of the tube. A tank to be inserted, and the tank includes a center plate, a refrigerant tank side plate disposed on one side of the center plate, and a cold storage material tank side plate disposed on the other side of the center plate. The refrigerant tank chamber to which the refrigerant is supplied is formed on one surface side of the central plate, and the cold storage material tank chamber to be filled with the cold storage material is formed on the other surface side of the central plate, and the tube forms the refrigerant passage At least one of the refrigerant piping that opens in the refrigerant tank chamber and the cold storage material filling path that opens in the cold storage tank chamber is at least one of the central plate and the refrigerant tank side plate. And the two plates of the regenerator tank side plate are penetrated, the central plate has a rail-shaped central plate fitting portion extending in the tank longitudinal direction, and the tube is the regenerator tank side plate When the cold storage material tank side plate has a cold storage material tank side plate fitting portion that fits into the central plate fitting portion, and the tube passes through the refrigerant tank side plate and the central plate, The refrigerant tank side plate has a refrigerant tank side plate fitting portion that fits into the center plate fitting portion.

  ADVANTAGE OF THE INVENTION According to this invention, when inserting a tube in each opening of two or more plates among the laminated | stacked plates, it can be set as the cold storage heat exchanger which prevented the mutual position of a plate shifting.

It is a perspective view which shows the evaporator and cool storage which comprises the cool storage heat exchanger of 1st Embodiment. It is a side view which shows the evaporator and cool storage which comprises the cool storage heat exchanger of 1st Embodiment. It is the MM sectional view taken on the line of FIG. It is a perspective view explaining a tube in a 1st embodiment. It is a top view explaining a tube in a 1st embodiment. It is a perspective view explaining fitting a center plate and a cool storage material tank side plate by the modification of a 1st embodiment. It is a partial side sectional view showing an evaporation and regenerator which constitutes a regenerator heat exchanger of a 2nd embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the drawings are schematic and the dimensional ratios and the like are different from the actual ones. Therefore, specific dimensional ratios and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  The following embodiments are exemplifications for embodying the technical idea of the present invention, and the embodiments of the present invention are described below in terms of the material, shape, structure, arrangement, etc. of the components. It is not something specific. The embodiments of the present invention can be implemented with various modifications without departing from the scope of the invention.

  Further, in the embodiment described below, a heat exchanger that is optimally installed in an air conditioning unit that is mounted in a vehicle and supplies conditioned air to the inside of the vehicle will be described. However, the embodiment is applied to a heat exchanger other than a vehicle. Of course it is possible.

[First Embodiment]
First, the first embodiment will be described. FIG. 1 is a perspective view showing an evaporator / regenerator that constitutes the regenerator heat exchanger of this embodiment. FIG. 2 is a side view showing an evaporator / regenerator that constitutes the regenerator heat exchanger of the present embodiment. 3 is a cross-sectional view taken along line MM in FIG. FIG. 4 is a perspective view illustrating a tube in the present embodiment. FIG. 5 is a plan view for explaining the tube in this embodiment.

  As shown in FIGS. 1 to 5, the cold storage heat exchanger 10 of the present embodiment includes a refrigerant passage 12 (12p, 12q) through which a refrigerant passes and a cold storage material filling path 14 (14p, 14q) in which the cold storage material is filled. And a tank 22 that is provided on both ends of the tube 20 in the longitudinal direction and into which the tubes 20 are inserted from the ends. The tube 20 is supplied with a refrigerant and accommodates a cold storage material. In this embodiment, the tube 20 is provided along the up-down direction. The arrangement direction of the tubes 20 is a direction intersecting with the air flow direction A (mainly orthogonal direction). Fins 21 are disposed between adjacent tubes 20.

  The tank 22 includes a central plate 24, a refrigerant tank side plate 26 disposed on the upper surface side of the central plate 24, and a cold storage material tank side plate 28 disposed on the lower surface side of the central plate 24. The refrigerant tank chamber D (Dp, Dq) to which the refrigerant is supplied is formed on the upper surface side of the central plate 24, and the cold storage material tank chamber S filled with the cold storage material is formed on the lower surface side of the central plate 24.

  The regenerator heat exchanger 10 of the present embodiment is provided with a partition member 30 having an upper end fixed to the center of the refrigerant tank side plate 26 and a lower end fixed to the center of the center plate 24. The refrigerant tank chamber D includes two refrigerant tank chambers Dp and Dq separated by the partition member 30.

  The tube 20 has the regenerator material pipe portions 16p and 16q for charging the regenerator material (for storing the regenerator material) in the central portion, and the refrigerant pipe that forms the refrigerant passages on both sides of the regenerator material pipe portion 16. This is a multi-hole tube having portions 18p and 18q. The cold storage material tank side plate 28 is formed with an opening 28h through which the cold storage material piping portion 16 and the refrigerant piping portion 18 pass. The central plate 24 is formed with an opening 24hp through which the refrigerant piping portion 18p passes and an opening 24hq through which the refrigerant piping portion 18q penetrates (see also FIG. 6 described in the second embodiment for each opening). ).

  The regenerator material piping portions 16p and 16q form regenerator material filling paths 14p and 14q, respectively. In the present embodiment, the regenerator material piping portion 16 penetrates the regenerator material tank side plate 28 and opens in the regenerator material tank chamber S. Moreover, the refrigerant | coolant piping parts 18p and 18q form the refrigerant | coolants channel | paths 12p and 12q, respectively. The refrigerant piping portion 18p penetrates the cold storage material tank side plate 28 and the refrigerant tank side plate 26 and opens in the refrigerant tank chamber Dp. The refrigerant piping portion 18q penetrates the cold storage material tank side plate 28 and the refrigerant tank side plate 26, and opens in the refrigerant tank chamber Dq. In this way, the refrigerant storage pipe sections 16p and 16q open in the cold storage tank chamber S, and the refrigerant pipe sections 18p and 18q open into the refrigerant tank chambers Dp and Dq, respectively. The cold storage material piping section 16 is offset from each other.

  The central plate 24 has rail-shaped central plate fitting portions 24t extending in the tank longitudinal direction on both sides. In the present specification, the “rail shape” is not limited to a continuous one on a single line, but also includes those that are intermittently arranged on a single line.

  The cool storage material tank side plate 28 has cool storage material tank side plate fitting portions 28t fitted on the center plate fitting portion 24t on both sides. In the present embodiment, the center plate fitting portion 24t forms the convex portion 24ti toward the inside of the tank, so that the tank inner direction position of the refrigerant tank side plate 26 is positioned by the convex portion 24ti.

  In the present embodiment, the refrigerant tank chamber D is divided into a plurality of chambers by a plate-shaped flow path forming member 31 (see FIG. 2), and the refrigerant flows through each of the divided chambers. Alternatively, a downward flow is formed in each tube. A plurality of center plate fitting portions 24 t are formed on a straight line along the tank longitudinal direction, and the center plate fitting portions 24 t are disposed on both sides of each flow path forming member 31. The interval between the adjacent convex portions 24 ti is matched with the thickness of the flow path forming member 31.

  To assemble the cold storage heat exchanger 10, first, the tank 22 is assembled by assembling the central plate 24, the cold storage material tank side plate, and the refrigerant tank side plate 26 together. At that time, the center plate fitting portion 24t and the cool storage material tank side plate fitting portion 28t are fitted to each other. Further, when the refrigerant tank side plate 26 and the central plate 24 are fitted, the lower end of the refrigerant tank side plate 26 is brought into contact with the convex portion 24ti of the central plate fitting portion 24t, whereby the refrigerant tank side with respect to the central plate 24 is obtained. The relative position of the plate 26 is positioned.

  Then, the tube 20 is inserted into the opening 28h of the regenerator material tank side plate 28 from the front end side of the tube, and the refrigerant piping portions 18p and 18q are passed through the openings 24hp and 24hq of the center plate 24, respectively. The relative position of the tube 20 with respect to the plate 28 and the central plate 24 is set as a predetermined position. The predetermined position may be a position at which the refrigerant piping portion 18 contacts the center plate fitting portion 24t.

  In this embodiment, when manufacturing the cool storage heat exchanger 10, the tube 20 is assembled | attached to the tank 22 with which the center plate fitting part 24t and the cool storage material tank side plate 28 are fitting. Therefore, when the tube 20 is passed through the openings 28h, 24hp, and 24hq in this way, in this embodiment, even if the distal end of the tube contacts the center plate 24, the relative relationship between the center plate 24 and the regenerator tank side plate 28 is relatively small. The position is prevented from shifting.

  Further, since the central plate fitting portion 24t forms the convex portion 24ti toward the inside of the tank, the relative position of the refrigerant tank side plate 26 to the central plate 24 can be positioned by the convex portion 24ti.

  Further, the center plate fitting portions 24 t are disposed on both sides of the flow path forming member 31, and the interval between the adjacent convex portions 24 ti is adjusted to the thickness of the flow path forming member 31. Therefore, since the flow path forming member 31 can be temporarily held during the manufacture of the cold storage heat exchanger 10, the manufacturing rate is improved, that is, the manufacturing time is shortened.

  FIG. 6 is a perspective view for explaining that the center plate and the cold storage material tank side plate are fitted in a modification of the present embodiment. Instead of the central plate fitting part 24t and the regenerator material tank side plate fitting part 28t, as shown in FIG. 6, the central plate 34 having the central plate fitting part 34t connected to one is connected to one. You may make it the structure with which a cool storage heat exchanger is equipped with the cool storage material tank side plate 38 which has the cool storage material tank side plate fitting part 38t.

  Thereby, when fitting the center plate fitting part 34t and the cool storage material tank side plate fitting part 38t, by moving the center plate 24 along the longitudinal direction of the cool storage material tank side plate 38, It can be easily fitted.

[Second Embodiment]
Next, a second embodiment will be described. FIG. 7 is a partial side cross-sectional view showing an evaporation / cool storage device constituting the cold storage heat exchanger of the present embodiment. The cool storage heat exchanger 40 of this embodiment differs in the structure of the tank 42 compared with 1st Embodiment.

  A tank 42 constituting the cold storage heat exchanger 40 is fitted to the refrigerant tank plate 46 and a refrigerant tank plate 46 which is formed of a single molding plate and forms refrigerant tank chambers Dp and Dq to which refrigerant is supplied. By this, it has the cool storage material tank side plate 48 which forms the cool storage material tank chamber S filled with the cool storage material between the refrigerant tank plates 46. The refrigerant piping portions 18p and 18q of the tube 20 pass through the cold storage material tank side plate 48 and the refrigerant tank plate 46, respectively, and are opened in the refrigerant tank chambers Dp and Dq.

  The refrigerant tank plate 46 has a rail-like refrigerant tank plate fitting portion 46t extending in the tank longitudinal direction.

  The cool storage material tank side plate 48 has the same structure as the cool storage material tank side plate 28 described in the first embodiment, and has a cool storage material tank side plate fitting portion 48t that fits into the refrigerant tank plate fitting portion 46t. .

  In the present embodiment, the tanks 42 forming the refrigerant tank chambers Dp and Dq and the cold storage material tank chamber S are two plates of the refrigerant tank plate 46 and the cold storage material tank side plate 48. Therefore, compared with 1st Embodiment, it can be set as the cold storage heat exchanger 40 which reduced the number of parts (plate number).

  In the above embodiment, the example in which the refrigerant tank chamber is located above the cool storage material tank chamber has been described. However, the relative position of the coolant tank chamber to the cool storage material tank chamber is not particularly limited, and the coolant tank is not limited. The chamber may be positioned below the cool storage material tank chamber, and the refrigerant tank chamber and the cool storage material tank chamber may be adjacent to each other in the horizontal direction (horizontal direction).

  Moreover, although the above embodiment demonstrated the example which provided two each of the refrigerant | coolant tank chambers and the cool storage material tank chambers, the number may be single and may be three or more.

10 Cold storage heat exchangers 12, 12p, 12q Refrigerant passages 14, 14p, 14q Regenerative material filling passages 16, 16p, 16q Regenerative material piping sections 18, 18p, 18q Refrigerant piping sections 20 Tube 22 Tank 24 Central plate 24t Central plate Fitting portion 24ti Convex portion 26 Refrigerant tank side plate 28 Cold storage material tank side plate 28t Cold storage material tank side plate fitting portion 30 Partition member 31 Flow path forming member 34 Central plate 34t Central plate fitting portion 38 Cold storage material tank side plate 38t Cold storage material tank side plate fitting part 40 Cold storage heat exchanger 42 Tank 46 Refrigerant tank plate 46t Refrigerant tank plate fitting part 48 Cold storage material tank side plate 48t Cold storage material tank side plate fitting part D, Dp, Dq Refrigerant tank chamber S Cold storage tank room

Claims (4)

A plurality of tubes having a refrigerant passage through which a refrigerant passes and a regenerator filling path filled with a regenerator, and a tank provided on the end side in the longitudinal direction of the tube into which the tube is inserted from the end,
The tank includes a central plate, a refrigerant tank side plate disposed on one surface side of the central plate, and a cold storage material tank side plate disposed on the other surface side of the central plate. The refrigerant tank chamber to be supplied is formed on one side of the central plate, and the cold storage material tank chamber filled with the cold storage material is formed on the other side of the central plate,
The tube has at least one of a refrigerant piping portion that forms the refrigerant passage and opens in the refrigerant tank chamber and a cold storage material piping portion that forms the cold storage material filling path and opens in the cold storage material tank chamber, Passing through two plates of the center plate, the refrigerant tank side plate, and the cold storage material tank side plate,
The central plate has a rail-shaped central plate fitting portion extending in the tank longitudinal direction,
When the tube penetrates the cold storage material tank side plate and the central plate, the cold storage material tank side plate has a cold storage material tank side plate fitting portion that fits into the central plate fitting portion,
When the tube passes through the refrigerant tank side plate and the central plate, the refrigerant tank side plate has a refrigerant tank side plate fitting portion that fits into the central plate fitting portion. Exchanger.   2. The refrigerant tank side plate or the cold storage material tank side plate is positioned by the convex portion because the central plate fitting portion forms a convex portion inside the tank. Cold storage heat exchanger. The refrigerant tank chamber is divided into a plurality of chambers by a plate-shaped flow path forming member,
3. The center plate fitting portion is disposed on both sides of each flow path forming member, and the interval between the adjacent convex portions is adjusted to the thickness of the flow path forming member. The regenerative heat exchanger described. A plurality of tubes having a refrigerant passage through which a refrigerant passes and a regenerator filling path filled with a regenerator, and a tank provided on the end side in the longitudinal direction of the tube into which the tube is inserted from the end,
The tank is composed of a single molding plate and forms a refrigerant tank chamber to which a refrigerant is supplied, and a cold storage tank filled with a cold storage material by being fitted to the refrigerant tank plate. A cold storage material tank side plate that forms a chamber with the refrigerant tank plate,
The tube has at least one of a refrigerant piping portion that forms the refrigerant passage and opens in the refrigerant tank chamber and a cold storage material piping portion that forms the cold storage material filling path and opens in the cold storage material tank chamber, Penetrating both the refrigerant tank plate and the cold storage material tank side plate,
The refrigerant tank plate has a rail-like refrigerant tank plate fitting portion extending in the tank longitudinal direction,
The cool storage material tank side plate has a cool storage material tank side plate fitting portion that fits into the refrigerant tank plate.

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