JP2006250408A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular radiator for allowing easy work for exchanging cooling water while easily viewing a drain faucet downward when exchanging the cooling water. <P>SOLUTION: This heat exchanger for heat exchanging fluid comprises a core part for performing heat exchange, a tank part located at the lower part of the heat exchanger on the lower side of the core part for storing fluid, a drain port mounted in the tank part for draining the fluid from the heat exchanger, and the drain faucet mounted in the drain port for opening/closing the drain port to drain the fluid. The length of the drain faucet is increased as predetermined. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat exchanger, and more particularly to a vehicle radiator.

  In a vehicle, a water-cooled engine generally cools cooling water with outside air in a fin-and-tube type radiator. Cooling water that has cooled the engine is introduced into the radiator, and heat is exchanged by applying outside air to the core. The radiator is generally mounted in the engine room, but in recent years, due to the increase in the number of components due to the enhancement of the functions of the vehicle and the expansion of the cabin space, the mounting of parts in the engine room is becoming increasingly dense. As the engine room becomes overcrowded, the maintenance of the equipment mounted in the engine room tends to be more difficult.

  Cooling water replacement is a major maintenance item for vehicle radiators. When changing the cooling water of the radiator, the old cooling water is discharged by a drain cock installed at the bottom of the radiator. Conventionally, when changing the cooling water of the radiator, the operator has submerged under the vehicle body, removed the under cover, loosened the drain cock, and changed the cooling water.

  FIG. 5 is a plan view of a conventional radiator 50 as viewed from above. In FIG. 5, two electric blower fans (not shown) are provided on the passenger compartment side of the radiator 50 in a state surrounded by the fan shroud 7. The drain cock 60 is normally attached to a boss of a drain port (drain port) provided on the vehicle compartment side of the tank below the radiator 50. Since another heat exchanger is installed on the opposite side of the radiator 50 (opposite the passenger compartment side) or a structural part such as a bumper is installed, a drain cock cannot normally be installed on the opposite side in operation. . A conventional drain cock 60 is shown in FIG. The drain cock 60 includes a main body portion 62, a threaded connection portion 63, a knob portion 61 that performs a manual opening / closing operation, an inlet port 64, and an outlet port 65 provided in the main body portion 62. The connecting portion 63 is threaded and is screwed into a drain port such as a boss provided in the tank. When the drain cock 60 is opened by the knob 61, the cooling water flows from the inlet port 64 to the outlet port 65 and is discharged.

  Thus, since the fan shroud 7 is installed on the passenger compartment side of the radiator 50 so as to cover and protrude most of the radiator, the drain cock is located below the blower fan of the radiator 50, the fan shroud 7 As can be seen from FIG. 5, it cannot be confirmed from above. As described above, the drain cock cannot be seen from above the bonnet, and since there is a body frame at the lower part of the radiator, it cannot be seen even if it is submerged, so that there is a problem that work efficiency of cooling water exchange is deteriorated. .

This invention is made | formed in view of the situation mentioned above, and it aims at providing heat exchangers, such as a radiator, which can confirm a drain cock easily from upper and lower direction in the case of replacement | exchange of cooling water.
Another object of the present invention is to provide a heat exchanger such as a radiator that can easily check the drain cock when replacing the cooling water of the vehicle radiator and can more easily carry out the cooling water replacement operation. It is aimed.

  In order to achieve the above-described object, according to a first aspect of the present invention, there is provided a heat exchanger for exchanging heat of a fluid, a core portion for exchanging heat, the fluid being stored, and the heat exchanger A tank portion located below the heat exchanger below the core portion, a drain port attached to the tank portion for discharging the fluid from the heat exchanger, and a drain port attached to the drain port. And a drain cock that discharges fluid by opening and closing the mouth, and the drain cock is elongated to a predetermined length.

  By comprising in this way, when exchanging the cooling water of a radiator, a drain cock can be easily confirmed from an upper direction and a lower direction. In addition, when replacing the cooling water of the radiator, the drain cock can be easily checked, and the drain cock projects sideways from obstacles such as the body frame, making it easy to operate, making it easier to replace the cooling water. Can be implemented.

  The invention described in claim 2 is characterized in that a pipe bent substantially 90 degrees is connected to the drain port, and a drain cock is connected to the pipe.

  With this configuration, the drain cock is connected to the drain port 9 via the pipe 21 bent 90 degrees, so that the knob portion can be installed downward, and the drain cock can be opened and closed more easily. It is.

The invention according to claim 3 is characterized in that the drain port is provided on a side surface of the tank portion.
According to this form, the structure of the heat exchanger of this invention is actualized more.

According to a fourth aspect of the present invention, the heat exchanger is a vehicle radiator.
According to this form, the use of the heat exchanger of this invention is actualized more.

  According to the fifth aspect of the invention, since the drain cock is arranged on the rear side of the vehicle with respect to the body frame, the drain cock can be easily confirmed from above and below when the cooling water of the radiator is replaced. The cooling water exchange operation can be performed more easily.

  Hereinafter, a heat exchanger according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiments, the heat exchanger according to the present invention is described as a radiator for cooling engine coolant in a vehicle. FIGS. 1 to 3 schematically show a first embodiment of a vehicle radiator according to the present invention, and FIG. 1 is a front view of the radiator 1 according to the first embodiment of the present invention. FIG. 2 is a side view of the radiator 1 shown in FIG. 1 as viewed from an arrow A, and FIG. 3 is a view for explaining the drain cock according to the first embodiment of the present invention in comparison with the conventional drain cock. .

  First, referring to FIG. 1, a radiator 1 according to a first embodiment of the present invention is installed in a body frame 11 of a vehicle. The radiator 1 includes a core unit 5 that is a heat exchange unit, an electric blower fan 4 that sends air to the core unit 5, a tank 6 that is below the core unit 5, and a side surface of the tank 6. The drain cock 3 concerned. The tank 6 is provided with a drain port 9 for discharging the cooling water of the radiator in the form of a boss, for example, and the drain cock 3 is installed in the drain port 9 of the boss, for example, by screwing. Referring to FIG. 2, the side surface shape of the radiator 1 is shown in a state where a part is shown in a cross section. Since it is attached, it can be seen that the central portion of the radiator 1 protrudes. As already described, the drain cock 3 is located below the protruding portions of the blower fan 4, the fan shroud 7, and the like.

  In FIG. 3, the conventional drain cock 60 and the drain cock 3 of the present embodiment are compared, and the drain cock 3 of the present embodiment is longer than the conventional drain cock 60. The drain cock 3 is elongated so that the knob portion at the head of the drain cock 3 protrudes from the body frame 11 to the vehicle rear side. The drain cock 3 includes a main body portion 32, a threaded connection portion 33, a knob portion 31 that performs a manual opening / closing operation, an inlet port 34, and an outlet port 35 provided in the main body portion 32. The connecting portion 33 is threaded and is screwed into a boss or the like provided in the tank. When the drain cock 60 is opened by the knob portion 31, the cooling water flows from the inlet port 34 to the outlet port 35 and is discharged. In the present embodiment, the drain cock 3 is an angle type in which the flow path forms 90 degrees inside, but may be a straight flow path type.

  Since the drain cock 3 is thus elongated, as can be seen from FIG. 2, the drain cock 3 can be easily confirmed from above and can be easily operated from below. In the present embodiment, a method of connecting the pipe to the drain port 9 of the tank 6 and pulling it out and attaching the drain cock 3 to the pipe is also conceivable, but it may be difficult to attach the pipe because of its structure, so The drain cock 3 is effective.

Then, the effect and effect | action of this Embodiment are demonstrated.
According to the present embodiment, the drain cock 3 is elongated so as to be on the rear side of the vehicle with respect to the body frame 11. Easy to confirm. Further, the operation of replacing the cooling water of the radiator 1 can be performed more easily.

(Second Embodiment)
FIG. 4 is a sectional side view of the radiator 20 according to the second embodiment of the present invention. In FIG. 4, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The difference of the second embodiment from the first embodiment is the position of the drain cock 3. A pipe 21 bent 90 degrees is installed at the drain port 9 of the tank 6 of the radiator 20, and the drain cock 3 is attached to the tip of the pipe 21. When the pipe can be attached to the tank 6 in this way, the drain port 9 is extended by the pipe 21 at a portion on the rear side of the body frame 11 and further bent by 90 degrees to be elongated at the tip. Connected drain cock 3 is connected. As a result, when the drain cock 3 is attached to the tank 6, as shown in FIG. 4, the drain cock 3, particularly the knob 31 thereof, protrudes laterally from the body frame 11 and further extends downward. In position. Furthermore, since the knob portion 31 at the head of the drain cock 3 is disposed downward, the operation from the lower side is further facilitated.

Then, the effect and effect | action of this Embodiment are demonstrated.
According to the second embodiment, in addition to the effect achieved by the first embodiment, the drain cock is connected to the drain port 9 through the pipe 21 bent by 90 degrees, so that the knob portion is installed downward. The drain cock can be opened and closed more easily.

  The above embodiment is an example of the present invention, and the present invention is not limited to the embodiment.

FIG. 1 is a schematic partial front view of a radiator according to a first embodiment of the present invention. FIG. 2 is a side view of the radiator of FIG. FIG. 3 is an explanatory diagram comparing the drain cock according to the first embodiment of the present invention with a conventional drain cock. FIG. 4 is a side view similar to FIG. 2 of the radiator according to the second embodiment of the present invention. FIG. 5 is a plan view of a conventional vehicle radiator as seen from above. FIG. 6 is an explanatory view of a conventional drain cock.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radiator 3 Drain cock 4 Blower fan 5 Core part 6 Tank 7 Fan shroud 9 Drain port 11 Body frame

Claims (5)

In a heat exchanger for exchanging heat with a fluid, the heat exchanger is
A core for heat exchange;
A tank part in which the fluid is stored and positioned below the heat exchanger below the core part;
A drain port attached to the tank portion for discharging the fluid from the heat exchanger;
A drain cock attached to the drain port to open and close the drain port to discharge the fluid;
It has
The heat exchanger according to claim 1, wherein the drain cock is elongated to a predetermined length.   The heat exchanger according to claim 1, wherein a pipe bent substantially 90 degrees is connected to the drain port, and the drain cock is connected to the pipe.   The heat exchanger according to claim 1, wherein the drain port is provided on a side surface of the tank portion.   The heat exchanger according to any one of claims 1 to 3, wherein the heat exchanger is a vehicle radiator. A radiator provided with a core portion for cooling engine coolant passing through the inside, and tank portions connected to both ends of the core portion;
A blower fan that is provided on the vehicle rear side of the core part and blows cooling air to the core part;
A fan shroud that is assembled on the rear side of the radiator and guides cooling air from the fan;
A cooling device assembled to a body frame disposed below the vehicle body,
A drain pipe formed in the tank portion for discharging the cooling water from the tank portion;
A drain cock for opening and closing the drain pipe;
The cooling device, wherein the drain cock is arranged so as to be closer to the vehicle rear side than the body frame.

Images