JP2000177366A - Heating-use heat exchanger for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent the temperature rise of the electric connecting part of each lead terminal member in a heating-use heat exchanger having an electric heating element integrated thereto by providing such a structure as to be capable of cooling the electric connecting part situated within a terminal box of a plurality of lead terminal members with the air passing in the terminal box. SOLUTION: In this heat exchanger having a heat exchanging core part 3 consisting of a number of parallel arranged tubes for passing a heat source fluid and a fin member connected between them, an electric heating element 9 is set in at least a part of the core part 3 to heat the air by the current- carrying to the electric heating element 9 in cooling. In this case, an electric wiring cover is mounted on a tank part arranged on both sides of the core part 3, and each of positive electrode-side and negative electrode-side wiring members 21a, 21b is housed and held in a wiring holding part 201 possessed by the cover. Of each terminal box 202, 204, air inflow port parts 202b, 204b are formed on the wall part situated so as to face the outlet side surface for passing air of the heat exchanging core part 3, so that the electric connection part can be cooled with air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle heat exchanger for heating air by using hot water (engine cooling water) heated by a vehicle engine (internal combustion engine) as a heat source.
The present invention relates to a heat exchanger in which an electric heating element is integrated.

[0002]

2. Description of the Related Art Conventionally, a heat exchanger in which an electric heating element of this kind is integrated has been proposed in Japanese Patent Application Laid-Open No. 5-69732. According to this conventional device, the electric heating element is integrated with a heating heat exchanger that heats air using hot water (engine cooling water) as a heat source. By energizing the body, the heat generated by the electric heating element can be radiated into the air to heat the air.

[0003]

By the way, in the conventional apparatus described in the above publication, an electric heating element composed of a heating element and an electrode plate is integrally brazed to a core of a heating heat exchanger. Therefore, the electric heating element is exposed to an atmosphere having a high brazing temperature (about 600 ° C. in the case of aluminum brazing). For this reason, there is a problem that the electrical characteristics of the electric heating element are significantly impaired.

[0004] On the other hand, the present applicant has previously filed Japanese Patent Application No.
In the specification of Japanese Patent Application No. 0-58184, by utilizing the fact that the core portion of the heat exchanger has a structure in which a plurality of flat tubes and corrugated fins are alternately laminated, a flat tube is provided between both adjacent corrugated fins. Instead, after inserting and brazing a dummy holding member, a structure is proposed in which the dummy holding member is removed in a state where the brazing temperature is lowered, and an electric heating element is interposed between both adjacent corrugated fins. did.

[0005] According to this, the electric characteristics of the electric heating element can be ensured well. By the way, in the heating heat exchanger having such a laminated structure, when supplying power to the electric heating element, it is necessary to connect a connection terminal of the electric heating element to an external power supply. For this reason, in the above description, a terminal box is further provided on the outflow side surface of the core portion at the longitudinal end of the electric heating element, and the connection terminal of the electric heating element is introduced into the terminal box. The connection terminal is connected to an external power supply by an appropriate wiring.

However, since the terminal box covers a part of the air outflow side surface of the core at the place where the terminal box is disposed, air cannot flow into the terminal box from the core. As a result, there is a problem that the temperature of the electrical connection portion such as the connection terminal of the electric heating element in the terminal box is increased. Therefore, in order to cope with such a problem, the present invention devises the shape of the terminal box for the connection terminal of the electric heating element and improves the flow characteristics of air from the core portion to the connection terminal of the electric heating element. It is an object of the present invention to provide a heat exchanger for heating a vehicle as described above.

[0007]

In order to achieve the above object, in the vehicle heat exchanger according to the first aspect of the present invention, a large number of tubes (6) through which a heat source fluid flows are arranged in parallel. Fin members (7) on multiple tubes (6)
The heat exchange core portion (3) is configured to heat the passing air by joining the heat exchange fluids, and the tanks (1, 2) for distributing or collecting the heat source fluid to a number of flat tubes (6) are provided. An electric heating element (9) is provided along at least a part of the heat exchange core (3) along the longitudinal direction of the tube (6).

In the heat exchanger for heating, a positive electrode plate (9b) and a negative electrode are disposed on the electric heating element (9) so as to be electrically insulated from the heat exchange core (3). A plate (9c), a heating element (9a) joined between the two electrode plates (9b, 9c), and a tank (1, 2).
Then, an electric wiring cover (20) made of an electrically insulating material is attached to the tube (20), and the electric wiring cover (20) accommodates and holds the respective wiring members (21a, 21b) on the positive electrode side and the negative electrode side. 6) A wiring holder (201) provided along the parallel arrangement direction, and a heat exchanger (201) for heat exchange from the wiring holder (201) toward the installation site for the heat exchange core (3) of the electric heating element (9). Each terminal box (20) on the positive electrode side and the negative electrode side protruding on the outflow surface side of the air passing through the core portion (3).
2, 204), and each terminal box (2
02, 204), connecting terminal portions (9f, 9h) protruding from the positive electrode side and negative electrode side electrode plates (9c, 9b) to the outflow surface side of the air passing through the heat exchange core portion (3). The positive and negative electrode lead terminal members (20i, 20j) connected to the positive electrode and negative electrode wiring members (21a, 21b) are interposed therebetween. In the terminal boxes (202, 204), the air passing through the heat exchange core (3) is allowed to flow into a wall portion facing the outflow side of the air passing through the heat exchange core (3). Inlets (202b, 204b, 20)
2d, 202e, 202f, 204f, 202g, 20
2h, 202i, 202j, 202k, 202n, 20
4n), and the terminal boxes (202,
204), the air flowing into the positive and negative terminal boxes (202, 204) from the respective inlets is applied to the wall of the heat exchange core (3) facing the outflow direction of the passing air. An outlet portion (202a, 204a) for outflow is provided.

As described above, in each of the terminal boxes on the positive electrode side and the negative electrode side, which faces the outflow side of the air passing through the core for heat exchange, the air passing from the core for heat exchange is provided. An inflow opening is provided so as to allow the inlet to flow in, and the wall facing the outflow direction of the passing air of the heat exchange core among the terminal boxes on the positive electrode side and the negative electrode side has a positive electrode side from each of the inlets and Since an outflow portion is provided to allow the air flowing into each terminal box on the negative electrode side to flow out, air flowing out of the core portion in the vicinity of each terminal box flows into each terminal box through each inflow portion, and then flows into each terminal box. It flows out from each outlet of the terminal box.

As a result, the electrical connection portions and the like located in each terminal box among the lead terminal members are favorably air-cooled by the air passing through the inside of each terminal box as described above.
It is possible to reliably prevent a temperature rise of the electrical connection portion and the like of each lead terminal member. In the invention according to claim 2,
In the invention according to claim 1, the electric wiring cover (2
0) further includes each terminal box (20
2, 204) between the wiring holding part (201) and the outflow side of the air passing through the heat exchange core part (3). The walls (210a, 210b) are connected to the respective electrode plates (9c, 9) on the positive electrode side and the negative electrode side of the electric heating element (9).
b) between the connection terminals (9f, 9h) on the positive electrode side and the negative electrode side protruding from the heat exchange core part (3) to the outflow surface side of the passing air.

[0011] Thus, the intrusion of foreign matter between the connection terminals of the electric heating element is reliably prevented by the short prevention wall between the connection terminals. Therefore, the electrical characteristics of the electric heating element can be favorably maintained without the respective connecting terminals of the electric heating element being electrically short-circuited to each other, while achieving the function and effect of the first aspect of the present invention. In the invention according to claim 3, in the invention according to claim 2, the short prevention wall is a first short prevention wall, and the electric wiring cover (20) further includes a positive electrode side and a negative electrode side. One first short prevention wall (21) of the terminal box (202, 204)
0a, 210b) is provided with a second short prevention wall (210c) extending from the wall located on the other side toward the outflow side of the air passing through the heat exchange core (3). The prevention wall (210c) protrudes from the electrode plates (9c, 9b) on the positive electrode side and the negative electrode side of the electric heating element (9) toward the outflow surface side of the passing air of the heat exchange core part (3). It further extends to the outflow side surface side of the heat exchange core portion (3) than the connection terminal portions (9f, 9h) on the negative side and the negative side.

Thus, even if a plurality of heat exchangers in which the electric heating elements are assembled as described above are stacked in a stack at the core portion, the upper heat exchanger is connected to both connection terminals of the lower heat exchanger. The contact with the portion can be reliably prevented by the second short prevention wall. As a result, even when a plurality of heat exchangers are stacked in a stacked manner as described above, both connection terminals of the lower heat exchanger are maintained in a normal shape without being bent by the upper heat exchanger. Can be done.

When a plurality of electric heating elements are provided in the core portion, an electric short between the connection terminals of each electric heating element can be reliably prevented by the second short prevention wall. Further, according to the invention described in claim 4, in the invention described in claims 1 to 3, each of the inflow ports (202a,
204a) is a terminal box (202,
204) may be formed on a wall portion intersecting with a passing air outflow surface of the heat exchange core portion (3).

According to a fifth aspect of the present invention, in each of the first to third aspects, each of the inlet portions (202
a, 204a) are the terminal boxes (20
2, 204) is formed on a wall portion located in parallel with the outflow surface side of the air passing through the heat exchange core portion (3). According to this, the electrical connection portion located in each terminal box of each lead terminal member passes through the heat exchange core (3) of each of the positive and negative terminal boxes (202, 204). Since the air is effectively cooled by the air flowing into each terminal box from the inflow portion of the wall portion located in parallel with the outflow surface side of the air, the operation and effect of the invention according to claims 1 to 3 can be achieved. It can be further improved.

According to the invention described in claim 6, in the invention described in any one of claims 1 to 3, the positive electrode side lead terminal member (20i) is connected to the positive electrode side terminal box (20).
An electric connection portion connected to the positive electrode side wiring member located along the side wall of the air passing surface of the heat exchange core portion in the heat exchange core portion and a positive terminal box rising from the electric connection portion; The negative electrode side terminal box side wall is provided with an engaging portion (20m) which engages in an inverted U-shape from the outlet side, while the negative electrode side lead terminal member (20j) is provided inside the negative electrode side terminal box. An electrical connection portion which is located along the side wall portion of the passing air outflow surface of the heat exchange core portion (3) and which is connected to the negative wiring member; An engaging portion (2) that engages with the side wall portion in an inverted U-shape from the outlet portion side.
0q), and each inlet port (202n, 204n)
Is formed by forming cutouts (202m, 204m) in the wall of the positive terminal box facing the negative terminal box side wall and the wall of the negative terminal box facing the positive terminal box side wall, respectively. Formed, each notch (202 m, 204
m) extends into each terminal box so as to press down the electrical connection portion of each lead terminal member.

Thus, the air flowing out of the core to the vicinity of each terminal box flows into each terminal box through the notch portion, which is each inlet, and then flows out from each outlet of each terminal box. Therefore, the same function and effect as the invention described in any one of claims 1 to 3 can be achieved. Also, since each notch (202m, 204m) extends into each terminal box so as to press down the electrical connection of each lead terminal member,
The above effects can be achieved while preventing the displacement of each lead terminal member.

According to the invention described in claim 7, in the invention described in any one of claims 1 to 5, the positive lead terminal member (20i) is provided within the positive terminal box. An electrical connection portion that is located along the side wall portion of the passing air outflow surface of the heat exchange core portion (3) and is connected to the positive electrode side wiring member; and a negative electrode side terminal box side wall of the positive electrode terminal box rising from the electrical connection portion The negative electrode-side lead terminal member (20j) is provided with a heat exchange core portion in the negative electrode-side terminal box. (3) an electric connection portion located along the side wall portion of the passing air outflow surface and connected to the negative electrode side wiring member; and an outlet portion rising from the electric connection portion and flowing out to the positive electrode side terminal box side wall portion of the negative electrode side terminal box. And an engagement portion (20q) in an inverted U-shape that engages from the side. m, 20q), at its outer part, has issued long extending to pass through the air outlet side of the heat exchange core section (3).

Thus, the operation and effect of the invention according to any one of claims 1 to 5 can be achieved while the engaging portions of the lead terminal members are more securely held on the side walls of the terminal boxes. . According to the invention described in claim 8, in the invention described in claim 6, each of the engagement portions (20m, 20q)
Has a long outer side extending toward the passing air outflow surface of the heat exchange core (3) at the outer portion thereof.

Thus, the function and effect of the invention described in claim 6 can be achieved while the engaging portions of the lead terminal members are more reliably held on the side walls of the terminal boxes. In addition, the code | symbol in the parenthesis of each said means shows the correspondence with the concrete means of embodiment mentioned later.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIGS. 1 to 6 show a first embodiment of a heating heat exchanger of a vehicle to which the present invention is applied. In FIG. 1, a heating heat exchanger H is a hot water inlet side tank. 1, a hot water outlet side tank 2, and a heat exchange core 3 provided between the tanks 1 and 2.

The hot water inlet side tank 1 is provided with an inlet pipe 4 through which hot water (engine cooling water) from a vehicle engine (not shown) flows in, while the hot water outlet side tank 2 is provided with hot water. An outlet pipe 5 is provided for flowing out to the outside and returning to the engine side. In addition, without being limited to this, in the heat exchanger of this example, the hot water inlet side tank 1 and the hot water outlet side tank 2 may be provided left and right reversed.

Each of the tanks 1 and 2 comprises a tank body 1a and 2a and a sheet metal 1b and 2b for closing an opening end face of the tank body 1a and 2a. This is a known tank structure. A large number of flat tube insertion holes (not shown) are formed in the sheet metal 1b, 2b in one or more rows in the vertical direction of FIG.

The heat exchange core 3 is composed of a number of flat tubes 6 formed in a flat shape perpendicular to the flow direction of the air for heating (the direction of arrow E in FIG. 1) and arranged in parallel in the vertical direction in FIG. ing. A corrugated fin (fin member) formed in a wave shape between the plurality of flat tubes 6.
7 are arranged and joined. As is well known, a large number of louvers (not shown) are formed in the corrugated fin 7 obliquely at a predetermined angle with respect to the flow direction E of the heating air. Have improved.

Openings at both ends of the flat tube 6 are inserted into tube insertion holes of the sheet metals 1b and 2b, respectively.
Joined. Further, side plates 8a and 8b are provided further outside the corrugated fins 7 on the outermost sides (upper and lower ends in FIG. 1) of the core portion 3, and these side plates 8a and 8b are disposed.
8b is joined to the outermost corrugated fin 7 and sheet metal 1b, 2b.

Further, instead of the flat tubes 6, electric heating elements 9 are provided at a plurality of portions of the heat exchange core 3, respectively. In the example of FIG. 1, electric heating elements 9 are provided at three positions of the heat exchange core 3 at equal intervals. In the portion of the heat exchange core 3 where the electric heating element 9 is installed, a U-shaped cross section extending in the longitudinal direction of the flat tube 6 is held between the bent tops of the adjacent corrugated fins 7. The plate 10 is arranged (see FIG. 2). As shown in FIG. 2, the closed end 10 a of the holding plate 10, which is a U-shaped bent portion, is connected to the heat exchange core 3.
Of the holding plate 10 is set so that the opening 10b on the other end faces the air outlet side of the heat exchange core 3.

The holding plate 10 has a predetermined interval between the opposed flat plates 10c and 10d, and in this state, the flat plates 10c and 10d are respectively joined to the bent tops of the corrugated fins 7. I have to do it. The overall thickness of the holding plate 10 is the flat tube 6
The thickness is set to be the same as For this reason, the holding plate 10 is replaced with the corrugated fin 7 instead of the flat tube 6.
Can be installed between each other.

By the way, in the heat exchanger of this embodiment, all of the components 1 to 8b are formed of aluminum (including an aluminum alloy), and the holding plate 10 is similarly formed of aluminum. ing.
The holding plate 10 is a thin metal plate having a thickness of about 0.1 to 0.5 mm, and the width of the holding plate 10 (the width in the flow direction E of the heating air) is substantially the same as the core thickness. Holding plate 1
The dimension in the longitudinal direction of 0 (the dimension in the horizontal direction in FIG. 1) is substantially the same as the dimension between the sheet metals 1b and 2b.

The electric heating element 9 is provided on both flat plate portions 1 of the holding plate 10.
It is inserted from the opening 10b between 0c and 10d, and is held inside the holding plate 10. As shown in FIG. 2, the electric heating element 9 includes a plate-shaped heating element 9a and an elongated flat plate-shaped electrode plate 9 disposed on both front and back surfaces of the heating element 9a.
The electrode plates 9b and 9c have a three-layered sandwich structure composed of the electrodes b and 9c, and the entire electrode plates 9b and 9c are covered together with the heating element 9a by a covering member 9j made of an electrically insulating material. . The electric heating element 9 has a substantially flat rectangular parallelepiped shape.

Here, the heating element 9a is made of a resistor material (eg, barium titanate) having a positive resistance temperature characteristic in which the resistance value rapidly increases at a predetermined set temperature (eg, around 200 ° C.) T ₀ . The PTC heater element has a thickness of about 1.0 to 2.0 mm. The two electrode plates 9b and 9c of the heating element 9a are formed from a conductive metal material such as aluminum, copper, and stainless steel, and have a thickness of 0.1.
It is about 0.5 mm. The dimensions in the longitudinal direction (the dimensions in the left-right direction in FIG. 1) of the two electrode plates 9 b and 9 c are substantially the same as those of the holding plate 10. A plurality of heating elements 9a (three in the example of FIG. 1) are arranged in the longitudinal direction of both electrode plates 9b and 9c. Heating element 9a and both electrode plates 9
b and 9c are brought into pressure contact with each other to obtain electrical continuity between them.

The electrode plate 9b is a positive electrode plate. The electrode plate 9b has a connection terminal portion 9d for electrical connection to an external power supply.
However, as shown in FIG. 3, they are integrally formed in an L-shape. The electrode plate 9c is a negative electrode plate, on which a connection terminal portion 9e for electrical connection with the external power source is integrally formed in an L-shape as shown in FIG. ing.

As shown in FIG. 3, the connection terminal portion 9d includes an L-shaped portion 9f and an inverted U-shaped engagement portion 9g. The L-shaped portion 9f is formed in an inverted U-shape at the tip thereof. On the other hand, the connection terminal 9e
Has an L-shaped part 9h and an inverted U-shaped engaging part 9i, as shown in FIG. 3, and the inverted U-shaped engaging part 9i is opposite to the tip of the L-shaped part 9h. It is formed in a U-shape.

However, as shown in FIG. 3, each of the two engaging portions 9g and 9i has an inverted U-shape which is opposite to each other. The two L-shaped portions 9f and 9h are positioned in parallel with each other so that both short prevention walls 210a and 210b (see FIG. 3A) described later can be interposed therebetween. The short prevention wall 210b may be omitted.
The covering member 9j is connected to both flat plate portions 10c and 10d of the holding plate 10.
The electric heating element 9 is assembled inside the holding plate 10 so as to be pressed against the inner surface of the holding plate 10. Here, the covering member 9j performs an electrical insulating action between the holding plate 10 and the two electrode plates 9b and 9c, but serves to conduct heat of the heating element 9a to the holding plate 10. The thickness of the covering member 9j between the holding plate 10 and the two electrode plates 9b and 9c is 25 .mu.
A good heat conduction effect is ensured by forming a thin film of about 100 μm.

On the other hand, the thickness of the covering member 9j on the side of the heating element 9a is increased to about 1 to 2 mm to protect the heating element 9a. As a specific material of the covering member 9j, a resin having high heat resistance (for example, polyimide resin or the like) is preferable. Next, an electric wiring structure for connecting between the electric heating element 9 integrated in the heat exchanger for heating and the external power source and for grounding will be specifically described.

The electric wiring cover 20 is made of a resin material (electric insulating material) having a certain degree of elasticity, such as polypropylene, and a cover main body 200 and a wiring holding part 201.
(See FIG. 1). The cover main body 200 has a U-shaped cross section and is formed in a longitudinal shape along the outer surface of the hot water outlet side tank 2. (Rear left side in the figure).

Further, the wiring holding unit 201 is provided in each of FIGS.
As shown in FIG. 1, the wiring holding portion 201 is integrally formed to protrude from the cover main body portion 200 toward the downstream side in the air flow direction E of the core portion 3. As shown in FIG. Along the length of the electrical heating element 9 at all of a plurality of locations (three locations in the illustrated example).

The inside of the wiring holding portion 201 is partitioned into two wiring storage spaces (recesses) by a partition plate 203 extending along the longitudinal direction of the tank 2. In these two wiring storage spaces, three positive electrode lead wires 21a and three negative electrode lead wires 21b are stored in a stacked state.
One end of the three positive lead wires 21a is connected to the positive connector 40 shown in FIG. 1, and one end of the three negative lead wires 21b is connected to the negative connector 41 (connected to the ground line) shown in FIG. Connected). Positive lead 2
Lead terminal members 20i and 20j (see FIG. 3) formed of a conductive metal plate material such as aluminum or copper are electrically connected to the other end portions of the lead wire 1a and the negative lead 21b by means such as soldering or caulking. , And mechanically connected. The lead terminal members 20i, 20j are respectively fitted with the respective gripping portions 20n, 20p into which the respective inverted U-shaped portions 9g, 9i of the both connection terminal portions 9d, 9e of the electric heating element 9 are fitted.
Are formed by bending.

On the other hand, the partition wall 203 is provided with a slit portion 205 for press-fitting and fixing the lead terminal member 20i to which the negative electrode side lead wire 21b is connected (see FIG. 3). Similarly, the partition plate 206 that forms the wiring housing space for the three positive electrode lead wires 21a together with the partition plate 203 includes a lead terminal member 20i for the positive lead wire 21a and a lead terminal member 20j for the negative lead wire 21b. Is provided with a slit portion 207 for press-fitting and fixing (see FIG. 3).

A pair of short prevention walls 210a and 210b are integrally formed on the partition plate 206 at positions corresponding to insertion portions of the electric heating elements 9 with respect to the core portion 3, respectively. Each of the pair of short prevention walls 210a, 10b is formed to extend from the partition plate 206 in parallel with each other toward the insertion portion of the electric heating element 9 with respect to the corresponding core portion 3.

However, the short prevention wall 210a is formed by a pair of a corresponding positive terminal box 2 and a negative terminal box 2
02 and 204 (see FIG. 3). One short prevention wall 210b is provided with a pair of corresponding terminal boxes 20.
The core portion 3 extends to the side wall portions of the core portions 204. In addition,
The short prevention wall 210a extends so as not to hinder the insertion of the corresponding electric heating element 9 into the core portion 3.

Further, a cover member 208 covering the lead wires 21a and 21b is provided along the longitudinal direction of the wiring holding portion 201.
Are integrally formed. The lid member 208 is configured to be openable and closable with respect to the main body of the wiring holding portion 201 by a hinge portion 209 using elasticity of resin. Also, a plurality of locations (three locations in the illustrated example) in the wiring holding unit 201
Each of the pair of terminal boxes 202 and 204 is located at a position on the extension of the portion where the electric heating element 9 is disposed.
It is formed to project from the partition plate 206 to the side.

A pair of terminal boxes 202 and 204 are located on both sides of the insertion part of the electric heating element 9 for each insertion part of the electric heating element 9 with respect to the core portion 3.
2, 204, each pair of short prevention walls 210
a, 210b are interposed. In addition, each terminal box 20
2 and 204 are opened toward the air flow direction E at the openings 202a and 204a, respectively.
2 and 204, the side wall of the air outflow surface of the core 3 (partition plate 2
06), a pair of slits 2
02b and 204b are formed. Here, each of the pair of slits 202b, 204b is formed in a vertically long and rectangular shape as shown in FIG. 3A.

In the terminal box 202, a lead terminal member 20i extends along a bottom wall (a wall portion parallel to the outflow surface of the core portion 3) as shown in FIGS. The lead terminal member 20i rises in an L shape along the left side wall 202c of the terminal box 202 at the grip portion 20n,
An engagement portion 20m extending in an inverted U shape from the grip portion 20n is fitted and engaged with the left side wall 202c from above.

On the other hand, in the terminal box 204, a lead terminal member 20j extends along the bottom wall as shown in FIGS. 3 to 6, and the lead terminal member 20j is attached to its grip portion 20p. Along the right side wall 204c of the terminal box 204
The engagement portion 20q that rises in a letter shape and extends in an inverted U shape from the grip portion 20p is fitted and engaged with the right side wall 204c from above. Note that a pair of slits 202b or 204
The sum of the opening areas of b is a value suitable for air-cooling the intermediate portion of the lead terminal member 20i or 20j located in the terminal box 202 or 204.

The fixing rod 211 is sandwiched between the opposing terminal boxes 202, 204 of the pair of terminal boxes 202, 204 adjacent to each other in parallel with the partition plate 206, respectively. Correspondingly, each rectangular extension plate portion 208a of the lid member 208 extending in an L-shape from the left edge in FIG. 3 downward in FIG. 3 is fixed so as to be pressed toward the partition plate 206.

In FIG. 1, each symbol B indicates a U-shaped and band-shaped fastening member, and these fastening members B are connected to the upper and lower ends of the core 3 at both ends in the longitudinal direction. By stopping, the core part 3 is pinched. Thereby, each fastening member B applies a tightening force (compression force) in the flat tube stacking direction to the core portion 3, and presses the electric heating element 9 between the corrugated fins 7 via the holding plate 10. keeping.

Next, a method of assembling the electric wiring portion of each electric heating element 9 will be described. First, the cover member 208 of the wiring holding unit 201 of the electric wiring cover 20 is opened, and the wiring holding unit 20 is opened.
The three positive electrode lead wires 21a and the three negative electrode lead wires 21b are respectively stored in a stacked state in two wiring storage spaces in 1. At this time, the lead terminal members 20i,
20j is a slit portion 2 as shown by an arrow F in FIG.
05 and 207.

Next, in a state where the brazing temperature after the integral brazing of the heat exchanger H is completed, the electric wiring cover 2 is
0 is attached to the tank 2 and then the electric heating element 9 is
As shown by an arrow G in (a), the open end 10b of the U-shaped holding member 10 of the heat exchanging core 3 starts with the two flat plates 10c, 1c.
Install between 0d. At the same time, the inverted U-shaped portions 9d, 9e of the connection terminal portions 9d, 9e of the electric heating element 9 are engaged with the engagement portions 20m, 20q of the lead terminal members 20i, 20j from the outside while being engaged. It is fitted and held in the holding parts 20n, 20p. Accordingly, each pair of short prevention walls 21
0a and 210b are connection terminals 9 of the corresponding electric heating element 9.
f, interposed between 9h.

Thus, the electric heating element 9 is incorporated into the core portion 3 and the electric heating element 9 and the lead wires 21a, 21
The electrical connection of the terminal portion with b is terminated. In the first embodiment configured as described above, as described above, a pair of slits 202b and 204b are formed on the air outflow side wall of the core 3 of each terminal box 202 and 204, respectively. I have.

Accordingly, each terminal box 202, 2
As shown by the curved arrows in FIG. 3A, the air flowing out near the area 04 flows into each terminal box 202, 204 through each pair of slits 202b, 204b, and then flows into each terminal box 202, 204. Out of the openings 202a and 204a. This means that each pair of slits 202b, 20
4b serves as an air inlet, and each opening 202a, 204a serves as an air outlet, so that the air in each terminal box 202, 204 can pass through better. means.

Thus, each of the lead terminal members 20i, 2
0j, the electrical connection portions located in the respective terminal boxes 202, 204 are appropriately air-cooled by the air passing through the inside of the respective terminal boxes 202, 204 as described above, and the respective lead terminal members 20i, 20j The temperature rise of the electrical connection part can be reliably prevented. Further, as described above, in a state where the brazing temperature is lowered after the integral brazing of the heat exchanger H is completed, the respective electric heating elements 9 are inserted into the holding plates 10 corresponding to the respective insertion portions of the core portion 3.
Of course, the electrical characteristics of each electric heating element 9 can be ensured well.

As described above, since the pair of short prevention walls 210a and 210b are interposed between the connection terminals 9f and 9h of the corresponding electric heating element 9, each connection of the electric heating element 9 is prevented. Mixing of foreign matter between the terminals 9f and 9h may cause a pair of short prevention walls 2 between the connection terminals 9f and 9h.
10a and 210b surely block it. Therefore, the electrical characteristics of the electric heating element 9 can be favorably maintained without each of the connection terminals 9f and 9h of the electric heating element 9 being electrically short-circuited to each other.

In the first embodiment, a pair of slits 202b are formed in the side walls of the air outflow surface of the core 3 of each terminal box 202 in the vertical direction in FIG. Although the example in which it is formed in a long and rectangular shape has been described, instead of this, each pair of slits 202d
As shown in FIG. 7, a plurality of circular slits 202e may be formed in the side walls of the outflow surface of each terminal box 202 in a longitudinal and rectangular shape in the horizontal direction as shown in FIG. As shown in the figure, the terminal box 202 may be formed on the side wall of the outflow surface. In this case, the slits on the side walls of the air outflow surface of the core portion 3 of each terminal box 204 are also changed to the same slit shapes as shown in FIG. 7 or FIG. This also achieves the same operation and effect as described in the first embodiment. (Second Embodiment) FIG. 9 shows a second embodiment of the present invention.

In the second embodiment, each pair of slits 202f is replaced with each pair of slits 202b described in the first embodiment, as shown in FIG. The portion is formed in a vertically long and rectangular shape. Also, each pair of slits 204f
(One slit 204f is shown in FIG. 9). Instead of each pair of slits 204b described in the first embodiment, as shown in FIG. It is formed longitudinally in the direction and rectangular. The sum of the opening areas of the pair of slits 202f or 204f is a value suitable for air-cooling the electrical connection portion of the lead terminal member 202i or 20j located in the terminal box 202 or 204. Other configurations are as described in the first section above.
This is the same as the embodiment.

In the second embodiment configured as described above, as described above, the pair of slits 202f, 204f are formed on the right side wall of each terminal box 202 and the left side wall of each terminal box 204, respectively. Are formed. Therefore, the air flowing from the core portion 3 to the vicinity of each of the terminal boxes 202 and 204 is, as shown by the arrow of the curve shown in FIG.
Each pair of slits 202 in each terminal box 202, 204
f, 204f and then flow into each terminal box 202, 204
Out of the openings 202a and 204a.

Thus, each of the lead terminal members 20i, 2
0j, the electrical connection portions located in the respective terminal boxes 202 and 204 are the same as those in the first embodiment.
The air passing through the insides of the second and the second 204 is satisfactorily cooled by air, so that the temperature rise of the electrical connection portions of the respective lead terminal members 20i and 20j can be reliably prevented. Other functions and effects are the same as those of the first embodiment.

In the second embodiment, a pair of slits 202f are formed in the right side wall of each terminal box 202 in a vertically long and rectangular shape as shown in FIG. However, instead of this, each pair of slits 202g is formed in each terminal box 202 so as to be elongated in the horizontal direction in the drawing and rectangular as shown in FIG.
And a plurality of circular slits 202h may be formed in the right side wall of each terminal box 202 as shown in FIG.

In this case, the slit on the left side wall of each terminal box 204 is also changed to the same slit shape as shown in FIG. 10 or FIG. With this, the same operation and effect as described in the second embodiment can be achieved. (Third Embodiment) FIG. 12 shows a third embodiment of the present invention.

In the third embodiment, each of the three slits 202i is replaced with a pair of slits 202b described in the first embodiment, as shown in FIG. The portion is formed in a longitudinal shape and a rectangular shape in the vertical direction in the figure. Each pair of slits 204b described in the first embodiment is also formed on the bottom wall of each terminal box 204 in the same shape as each slit 202i. Note that the sum of the opening areas of the pair of slits 202b or 204b is a value that allows the electrical connection portion of the lead terminal member 20i or 20j located in the terminal box 202 or 204 to be properly air-cooled. Other configurations are as described in the first section above.
This is the same as the embodiment.

In the third embodiment configured as described above, three slits 202i are formed on the bottom wall of each terminal box 202, respectively, as described above.
Similarly, three slits are formed on the bottom wall of each terminal box 204, respectively. Therefore, each terminal box 20 can be
The air flowing out of the vicinity of each of the terminal boxes 202, 204
After flowing into each of the terminal boxes 202 and 204 through the respective slits in the bottom wall thereof, they flow out of the respective openings 202a and 204a of the terminal boxes 202 and 204.

Thus, each of the lead terminal members 20i, 2
0j, is electrically cooled by air passing through the inside of each terminal box 202, 204 in the same manner as in the first embodiment, so that each of the lead terminal members 20i, 20j.
Temperature rise of the above-mentioned electrical connection portion can be surely prevented. In this case, the electrical connection of each lead terminal member 20i, 20j is located directly above each slit on the bottom wall of the corresponding terminal box 202, 204. The air passing through is cooled more effectively. As a result, it is possible to further improve the prevention of a rise in the temperature of the electrical connection portion of each of the lead terminal members 20i and 20j.
Other functions and effects are the same as those of the first embodiment.

In the third embodiment, three slits are formed in the bottom wall portion of each terminal box 202 so as to be long and rectangular in the vertical direction in FIG. Although an example has been described, instead of this, three slits 202j may be formed in the bottom wall portion of each terminal box 202 in a longitudinal and rectangular shape in the horizontal direction as shown in FIG. Well, a plurality of circular slits 202k
May be formed on the bottom wall of each terminal box 202 as shown in FIG. In this case, the slit of each terminal box 204 is also changed to the same slit as shown in FIG. 13 or FIG. With this, the same operation and effect as described in the third embodiment can be achieved. (Fourth Embodiment) FIGS. 15 and 16 show a fourth embodiment of the present invention.

In the fourth embodiment, notches 2
In FIG. 15, a right side wall portion of each terminal box 202 is cut out in a rectangular shape, as shown in FIG. 15, instead of the pair of slits 202f (see FIG. 9) described in the second embodiment. Have been. Here, the notch 202m is
The notch 202m extends downward in the terminal box 202, and the notch 202m has a lower end portion of the lead terminal member 20i that extends along the bottom wall in the terminal box 202 (see FIG. Reference numeral a at 16) extends toward the bottom wall of the terminal box 202 so as to be pressed onto the bottom wall (see FIG. 16). Further, as described above, the opening area of the opening 202n formed in the right side wall by notching the right side wall of the terminal box 202 is the electric area of the lead terminal member 20i located in the terminal box 202. The value is suitable for air-cooling the connection portion (including the portion along the bottom wall portion).

In the fourth embodiment, the notch 204m is replaced with the pair of slits 204f described in the second embodiment, as shown in FIG. It is formed by notching a portion in a rectangular shape. Here, the notch 204m corresponds to the terminal box 20.
The notch 204m extends downward in the terminal box 204. A portion of the lead terminal member 20j that extends along the bottom wall of the terminal box 204 in the terminal box 204 at the lower end thereof. It extends toward the bottom wall of the terminal box 204 so as to be pressed onto the part (see FIG. 16). The opening area of the opening 204n formed in the left side wall by notching the left side wall of the terminal box 204 as described above is equivalent to the electrical area of the lead terminal member 20j located in the terminal box 204. The value is suitable for air cooling the connection. Other configurations are the same as those of the first embodiment.

In the fourth embodiment configured as described above, the opening portions 202n and 204n are formed on the right side wall portion of each terminal box 202 and the left side wall portion of each terminal box 204, respectively, as described above. Is formed. Accordingly, the air flowing out of the core portion 3 into the vicinity of each of the terminal boxes 202 and 204 flows into each of the terminal boxes 202 and 204 through each of the openings 202n and 204n as shown by the arrow of the curve shown in FIG. After that, each opening 202 of each terminal box 202, 204
a, outflow from 204a.

Thus, each of the lead terminal members 20i, 2
0j, the intermediate portions located in the respective terminal boxes 202 and 204 are located in the respective terminal boxes 202 and 204 in the same manner as in the second embodiment.
The air passing through the inside of the airbag 04 is satisfactorily air-cooled, and the temperature rise of the electrical connection portions of the respective lead terminal members 20i and 20j can be reliably prevented. Further, as described above, the notches 202m and 204m are formed such that, at the lower ends thereof, portions of the lead terminal members 20i and 20j along the bottom walls in the terminal boxes 202 and 204 are formed on the bottom walls. And extends toward the bottom wall portions of the terminal boxes 202 and 204 so as to be pressed down. As a result, the lead terminal members 20i and 20j are connected to the terminal box 20.
2, 204 can be firmly pressed onto the bottom wall.

As a result, the lead terminal members 20i, 20j
Can be secured in the terminal boxes 202 and 204 so as not to be displaced, and at the same time, it is possible to prevent the temperature of the electrical connection portions of the lead terminal members 20i and 20j from rising. Other functions and effects are the same as those of the second embodiment. (Fifth Embodiment) FIGS. 17 to 19 show a fifth embodiment of the present invention.

In the fifth embodiment, in addition to the short prevention walls 210a and 210b described in the first embodiment, a short prevention wall 210c is provided in each terminal box 20.
In FIG. 4 of FIG. 4, each of them is formed to extend from the left side wall portion in the drawing along the outflow side surface of the air on the core portion 3 side. Here, the short prevention wall 210c is located to the left in FIG. 17 from the rising portions (see FIG. 17) of the corresponding connection terminals 9h and 9f of the corresponding electric heating element 9 from the outflow side surface of the core portion 3. The height of the short prevention wall 210c extends to the short prevention wall 210a, 210 described in the first embodiment.
It is the same as the height of b.

In the fifth embodiment, the engaging portion 2 of the lead terminal member 20j described in the first embodiment is used.
0q is the case of the first embodiment (see FIGS. 5 and 6)
17 to 19, it extends further downward in the figure. Further, the engaging portion 20m of the lead terminal member 20i described in the first embodiment also extends further downward, similarly to the engaging portion 20q of the lead terminal member 20j. Other configurations are the same as those of the first embodiment.

In the fifth embodiment configured as described above, since the short prevention wall 210c is formed to extend from the left side wall of the corresponding terminal box 204 as described above, each pair of terminal boxes adjacent to each other is formed. Short-circuits between the connection wirings for the respective lead terminal members provided in the insides 202 and 204 can be reliably prevented. Also, as described above, the short prevention wall 21
0c is higher than the rising portions of the connection terminals 9f and 9h of the corresponding electric heating element 9 from the outflow side surface of the core portion 3 in FIG.
And extends to the left in the figure.
The height of 0c is the same as the height of the short prevention walls 210a and 210b described in the first embodiment.

Therefore, even if a plurality of heat exchangers assembled as described above of the electric heating element 9 are stacked in the core portion 3 in a laminated manner, the upper heat exchanger is connected to both lower heat exchangers. The contact with the terminal portions 9f and 9h is prevented from being short-circuit preventing wall 210c.
Can be reliably prevented. As a result, even if a plurality of heat exchangers are stacked in a stacked manner as described above, both connection terminal portions 9f and 9h of the lower heat exchanger are normal without being bent by the upper heat exchanger. It can be maintained in shape. This means that the short prevention wall 210c also serves as a collision prevention wall.

As described above, the lead terminal member 20
Since the engaging portions 20m and 20q of i and 20j extend downward longer than the case described in the first embodiment,
Engaging portions 20m, 20q of lead terminal members 20i, 20j
Can more securely engage with the left side wall of the terminal box 202 and the right side wall of the terminal box 204 than in the first embodiment.

As described above, according to the fifth embodiment, the short prevention wall 210c as described above prevents the short circuit and the collision, and the terminal boxes 202 and 204 of the engaging portions 20m and 20q of the lead terminal members 20i and 20j. The same operation and effect as in the first embodiment can be achieved while ensuring more secure engagement with the wall. In implementing the present invention, the above-mentioned integral brazing in the heat exchanger may be performed as follows, unlike the above embodiments.

That is, the flat tube 6 is abolished at the position where the electric heating element 9 is installed with respect to the core portion 3, and instead, a material (carbon or the like) having a size corresponding to the electric heating element 9 and not being brazed is used. The dummy plate member (jig) is temporarily assembled, and the assembly position of the corrugated fin 7 is held. Then, while holding the temporary assembly state of the entire heat exchanger with an appropriate jig, it is carried into the furnace,
The whole heat exchanger is brazed by heating to the brazing temperature in a furnace. After the brazing is completed, the dummy plate member is removed from the core part 3 of the heat exchanger joined to the integral structure, and the electric heating elements 9 are directly disposed at three places of the core part 3 at predetermined intervals. And assemble. Thereby, even if the holding member 10 described in each of the above embodiments is abolished, the electric heating element 9 can be attached to the core portion 3 by the electric heating element 9.
To maintain good electrical characteristics.

In implementing the present invention, the shape of the opening as the inflow port of each of the terminal boxes 202 and 204 described in each of the above embodiments is limited to the shape described in each of the above embodiments. Instead, the present invention may be implemented with appropriate changes.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a vehicle heat exchanger according to the present invention.

FIG. 2 is a partially broken perspective view showing a state where the electric heating element of FIG. 1 is attached to a core portion.

3 (a) is an exploded perspective view of the electric heating element of FIG. 1 from a core portion, and FIG. 3 (b) is a perspective view showing a state during assembly of a lead terminal member of FIG. 1 to a partition plate. .

FIG. 4 is a plan view showing an assembled state of a lead terminal member to the terminal box of FIG. 2;

FIG. 5 is a sectional view taken along line 5-5 in FIG.

FIG. 6 is a view seen from the arrow A in FIG. 5;

FIG. 7 is a perspective view showing a main part of a modification of the first embodiment.

FIG. 8 is a perspective view showing a main part of another modification of the first embodiment.

FIG. 9 is a perspective view showing a main part of a second embodiment of the present invention.

FIG. 10 is a perspective view showing a main part of a modification of the second embodiment.

FIG. 11 is a perspective view showing a main part of another modification of the second embodiment.

FIG. 12 is a plan view showing a main part of a third embodiment of the present invention.

FIG. 13 is a plan view showing a main part of a modification of the third embodiment.

FIG. 14 is a plan view showing a main part of another modification of the third embodiment.

FIG. 15 is a perspective view showing a main part of a fourth embodiment of the present invention.

FIG. 16 is a partial plan view of the fourth embodiment.

FIG. 17 is a perspective view showing a main part of a fifth embodiment of the present invention.

18 is a sectional view taken along line 18-18 in FIG.

FIG. 19 is a diagram viewed from the arrow B in FIG. 18;

[Explanation of symbols]

1, 2, tank, 3 heat exchange core, 6 flat tube, 7 corrugated fin, 9 electric heating element, 9a heating element, 9b, 9c electrode plate, 9f, 9h connection terminal , 20 ... electric wiring cover, 20i, 20j ... lead terminal member, 21a, 21b ... lead wire, 210a-21
0c: short prevention wall, 201: wiring holding section, 202,
204: terminal box, 202b, 204b, 202d, 20
2e, 202f, 204f, 202g, 202h, 20
2i, 202j, 202k ... slit, 202m, 20
4m: Notch, 202n, 204n: Opening.

Claims (8)

[Claims] 1. A heat exchange core for heating a passing air by arranging a plurality of tubes (6) through which a heat source fluid flows in parallel and joining a fin member (7) to the plurality of tubes (6). And a tank (1 and 2) for distributing or collecting the heat source fluid to the plurality of flat tubes (6). At least the heat exchange core (3) In a heat exchanger for heating a vehicle in which an electric heating element (9) is installed along a longitudinal direction of the tube (6) at a part thereof, the electric heating element (9) is provided with the heat exchange core (3). ), The positive electrode plate (9b) and the negative electrode plate (9c), which are electrically insulated from each other, and the two electrode plates (9b, 9).
c) a heating element (9a) joined between the tanks (1) and (2), and an electric wiring cover (20) made of an electric insulating material is mounted on the tank (1, 2); ) Is provided with a wiring holding part (201) provided along the parallel arrangement direction of the tubes (6) so as to house and hold the wiring members (21a, 21b) on the positive electrode side and the negative electrode side, respectively. (9) a positive electrode side protruding from the wiring holding part (201) on the outflow surface side of the passing air of the heat exchange core part (3) toward an installation site for the heat exchange core part (3); Each terminal box (202, 204) on the negative electrode side is provided. In each terminal box (202, 204) on the positive electrode side and the negative electrode side, each electrode plate (9c, 9) on the positive electrode side and the negative electrode side is provided.
b) between the connection terminal portions (9f, 9h) protruding from the heat exchange core portion (3) toward the outflow surface of the passing air and the wiring members (21a, 21b) on the positive electrode side and the negative electrode side. Each of the positive and negative electrode lead terminal members (20i, 20j) connected therebetween is interposed, and the heat exchange core portion (202, 204) of the positive and negative electrode terminal boxes (202, 204) is interposed. An inlet (202b, 204b, 202d, 202e) that opens to allow the passing air from the heat exchange core (3) to flow into a wall portion facing the outflow side surface of the passing air of (3). , 20
2f, 204f, 202g, 202h, 202i, 20
2j, 202k, 202n, and 204n), and a wall portion of each of the terminal boxes (202, 204) on the positive electrode side and the negative electrode side facing the outflow direction of the air passing through the heat exchange core (3) includes: An outlet (202a, 204a) for discharging air flowing into each of the positive and negative terminal boxes (202, 204) from each of the inlets is provided. Exchanger. 2. A heat exchange core such that a plurality of tubes (6) through which a heat source fluid flows are arranged in parallel and a fin member (7) is joined to the plurality of tubes (6) to heat the passing air. And a tank (1 and 2) for distributing or collecting the heat source fluid to the plurality of flat tubes (6). At least the heat exchange core (3) In a heat exchanger for vehicle heating comprising an electric heating element (9) installed along a longitudinal direction of the tube (6) at a part thereof, the electric heating element (9) is provided with the heat exchange core (3). A positive electrode plate (9b) and a negative electrode plate (9c), which are electrically insulated from each other, and the two electrode plates (9b, 9c).
c) a heating element (9a) joined between the tanks (1) and (2), and an electric wiring cover (20) made of an electric insulating material is mounted on the tank (1, 2); ) Includes a wiring holding portion (201) provided along the direction in which the tubes (6) are arranged in parallel to accommodate and hold the wiring members (21a, 21b) on the positive electrode side and the negative electrode side, respectively. (9) a positive electrode side protruding from the wiring holding part (201) on the outflow surface side of the passing air of the heat exchange core part (3) toward an installation site for the heat exchange core part (3); Each of the terminal boxes (202, 204) on the negative electrode side is provided, and the heat exchange core section (201) is passed from the wiring holding section (201) to pass between the terminal boxes (202, 204) on the positive electrode side and the negative electrode side. 3) Prevention of short circuit extending toward the outflow side of passing air (210
a, 210b), and the short prevention wall (210a, 210b) is provided on each of the electrode plates (9, 9) on the positive and negative electrode sides of the electric heating element (9).
c, 9b) are located between the connection terminals (9f, 9h) on the positive electrode side and the negative electrode side protruding from the heat exchange core part (3) to the outflow surface side of the passing air. In the terminal boxes (202, 204) on the negative electrode side, the connection terminal portions (9f, 9
h) and the wiring members (21a, 2a,
1b), the respective lead terminal members (20i, 20j) on the positive electrode side and the negative electrode side connected to each other are interposed, and the heat exchange among the terminal boxes (202, 204) on the positive electrode side and the negative electrode side is provided. Inlet portions (202b, 204b) that open to allow the passing air from the heat exchange core portion (3) to flow into the wall portion that faces the outflow side surface of the passing air from the core portion (3). , 202d, 202e, 20
2f, 204f, 202g, 202h, 202i, 20
2j, 202k, 202n, and 204n), and a wall portion of each of the terminal boxes (202, 204) on the positive electrode side and the negative electrode side facing the outflow direction of the air passing through the heat exchange core (3) includes: An outlet (202a, 204a) for discharging air flowing into each of the positive and negative terminal boxes (202, 204) from each of the inlets is provided. Exchanger. 3. A heat exchange core such that a plurality of tubes (6) through which a heat source fluid flows are arranged in parallel and a fin member (7) is joined to the plurality of tubes (6) to heat the passing air. And a tank (1 and 2) for distributing or collecting the heat source fluid to the plurality of flat tubes (6). At least the heat exchange core (3) In a heat exchanger for vehicle heating comprising an electric heating element (9) installed along a longitudinal direction of the tube (6) at a part thereof, the electric heating element (9) is provided with the heat exchange core (3). A positive electrode plate (9b) and a negative electrode plate (9c), which are electrically insulated from each other, and the two electrode plates (9b, 9c).
c) a heating element (9a) joined between the tanks (1) and (2), and an electric wiring cover (20) made of an electric insulating material is mounted on the tank (1, 2); ) Includes a wire holding portion (201) provided along the direction in which the tubes (6) are arranged in parallel so as to house and hold the respective wiring members (21a, 21b) on the positive electrode side and the negative electrode side. (9) a positive electrode side protruding from the wiring holding part (201) on the outflow surface side of the passing air of the heat exchange core part (3) toward an installation site for the heat exchange core part (3); A terminal box (202, 204) on the negative electrode side is provided, and the heat exchange core section (3) passes from the wiring holding section (201) to pass between the terminal boxes (202, 204) on the positive electrode side and the negative electrode side. The first short prevention wall extending toward the outflow side of the passing air ( 10
a, 210b), and the first short prevention wall (210a, 210b) of one of the terminal boxes (202, 204) on the positive electrode side and the negative electrode side is separated from a wall portion located on the other side. A second short prevention wall (210c) extending toward the outflow side surface of the air passing through the replacement core (3) is provided. The first short prevention wall (210a, 210b) is provided with the electric heating element (9). ), Each of the positive and negative electrode connection terminals (9f) protruding from the positive and negative electrode plates (9c, 9b) to the outflow surface of the passing air of the heat exchange core (3). , 9h), the second short prevention wall (110c) flows out of the heat exchange core portion (3) more than the connection terminal portions (9f, 9h) of the electric heating element (9). Each terminal box on the positive electrode side and the negative electrode side further extended to the side The 202, 204) within the positive electrode side and the connection terminals of the anode side (9f,
9h) and the respective wiring members (21a, 21a,
21b) between which the positive and negative lead terminal members (20i, 20j) are respectively interposed, and the heat exchange of the positive and negative terminal boxes (202, 204). Inlet portions (202b, 204b) that open to allow the passing air from the heat exchange core portion (3) to flow into the wall portion that faces the outflow side surface of the passing air from the core portion (3). , 202d, 202e, 20
2f, 204f, 202g, 202h, 202i, 20
2j, 202k, 202n, and 204n), and a wall portion of each of the terminal boxes (202, 204) on the positive electrode side and the negative electrode side facing the outflow direction of the air passing through the heat exchange core (3) has An outlet (202a, 204a) for discharging air flowing into each of the positive and negative terminal boxes (202, 204) from each of the inlets is provided. Exchanger. 4. Each of the inlets (202a, 204a).
Are the respective terminal boxes (202, 20) on the positive electrode side and the negative electrode side.
4) The vehicle according to any one of claims 1 to 3, wherein the vehicle is formed on a wall portion of the heat exchange core portion which intersects with a passing air outflow surface of the heat exchange core portion. Heat exchanger for heating. 5. Each of the inlets (202a, 204a).
Are the respective terminal boxes (202, 20) on the positive electrode side and the negative electrode side.
4. The method according to claim 1, wherein the heat exchange core portion is formed on a wall portion located in parallel with the outflow surface of the air passing through the heat exchange core portion. 4. A heat exchanger for heating a vehicle according to claim 1. 6. The positive lead terminal member (20i).
An electrical connection portion which is located along the side wall portion of the heat-exchange core portion (3) inside the positive-electrode-side terminal box (202) and which is connected to the positive-electrode-side wiring member; An upside-down U from the outlet side is formed on a side wall of the negative terminal box (204) of the positive terminal box rising from an electric connection portion.
And an engagement portion (20m) that engages in the shape of a letter. On the other hand, the negative electrode-side lead terminal member (20j) is provided with air passing through the heat exchange core portion (3) in the negative electrode-side terminal box. An electrical connection portion located along the outflow surface side wall portion and connected to the negative electrode side wiring member, and rising from the electric connection portion to the positive electrode side terminal box side wall portion of the negative electrode side terminal box from the outlet side. Engagement part (20q) that engages in inverted U shape
Wherein each of the inlets (202n, 204n) faces a wall of the positive terminal box facing the negative terminal box sidewall and a wall of the negative terminal box facing the positive terminal box. The notch (202m, 204m) is formed in each of the wall portions to be formed, and the notches (202m, 204m) are formed so as to press down the electrical connection portions of the respective lead terminal members. The heat exchanger for heating a vehicle according to any one of claims 1 to 3, wherein the heat exchanger extends into the terminal box. 7. The positive lead terminal member (20i).
And an electrical connection portion connected to the positive electrode side wiring member in the positive electrode terminal box along the side wall portion of the heat exchange core portion (3) that passes through the outflow surface of the heat exchange core portion (3); And an inverted U-shaped engaging portion (20m) that engages with the side wall of the negative electrode terminal box from the outlet side of the positive electrode terminal box of the positive electrode terminal box. 20j) an electric connection portion connected to the negative electrode side wiring member in the negative electrode terminal box along the side wall of the air passing surface of the heat exchange core portion (3); An inverted U-shaped engaging portion (20q) which rises from a connection portion and engages the side wall of the positive terminal box of the negative terminal box from the outlet side.
Each of the engagement portions (20m, 20q) has an outer portion that extends long toward a passing air outflow surface of the heat exchange core portion (3). The heat exchanger for heating a vehicle according to any one of claims 1 to 5. 8. Each of the engaging portions (20m, 20q) has an outer portion that extends long toward the passing air outflow surface of the heat exchange core portion (3). Item 6
4. A heat exchanger for heating a vehicle according to claim 1.